diff options
| -rw-r--r-- | ChangeLog | 68 | ||||
| -rw-r--r-- | Makefile.in | 2 | ||||
| -rw-r--r-- | NEWS | 21 | ||||
| -rw-r--r-- | TODO | 199 | ||||
| -rw-r--r-- | awk.h | 3 | ||||
| -rw-r--r-- | awkgram.c | 12 | ||||
| -rw-r--r-- | awkgram.y | 12 | ||||
| -rw-r--r-- | awklib/Makefile.am | 11 | ||||
| -rw-r--r-- | awklib/Makefile.in | 105 | ||||
| -rw-r--r-- | builtin.c | 129 | ||||
| -rwxr-xr-x | configure | 20 | ||||
| -rw-r--r-- | configure.ac | 2 | ||||
| -rw-r--r-- | doc/ChangeLog | 24 | ||||
| -rw-r--r-- | doc/Makefile.am | 14 | ||||
| -rw-r--r-- | doc/Makefile.in | 14 | ||||
| -rw-r--r-- | doc/awkcard.in | 3 | ||||
| -rw-r--r-- | doc/gawk.1 | 27 | ||||
| -rw-r--r-- | doc/gawk.info | 1281 | ||||
| -rw-r--r-- | doc/gawk.texi | 90 | ||||
| -rw-r--r-- | doc/gawktexi.in | 90 | ||||
| -rw-r--r-- | main.c | 9 | ||||
| -rw-r--r-- | mpfr.c | 89 | ||||
| -rw-r--r-- | pc/config.h | 6 | ||||
| -rw-r--r-- | po/it.po | 32 | ||||
| -rw-r--r-- | str_array.c | 79 | ||||
| -rw-r--r-- | test/ChangeLog | 11 | ||||
| -rw-r--r-- | test/Makefile.am | 19 | ||||
| -rw-r--r-- | test/Makefile.in | 18 | ||||
| -rw-r--r-- | test/rand.ok | 2 | ||||
| -rw-r--r-- | test/randtest.ok | 0 | ||||
| -rwxr-xr-x | test/randtest.sh | 113 |
31 files changed, 1673 insertions, 832 deletions
@@ -14,6 +14,12 @@ * awk.h (cleanup_mpfr): Add declaration. * main.c (main): Add call to `cleanup_mpfr'. + Fix memory leak: + + * mpfr.c (do_mpfr_div): Add unref to denominator and numerator + to not leak memory. Thanks to Katie Wasserman <katie@wass.net> + for isolating the problem to that routine. + 2014-07-25 Arnold D. Robbins <arnold@skeeve.com> * main.c (main): Add a warning message if -M is used and gawk was @@ -36,6 +42,21 @@ 2014-07-10 Arnold D. Robbins <arnold@skeeve.com> + New `div()' function to do integer division and remainder; + mainly useful for use with GMP integers. Thanks to + Katie Wasserman <katie@wass.net> for the suggestion. + + * awk.h (do_div, do_mpfr_div): Declare new functions. + * builtin.c (do_div): New function. + * mpfr.c (do_mpfr_div): New function. + * awkgram.y (tokentab): New entry. + (snode): Add check for do_div/do_mpfr_div to make 3rd arg + be an array. + * NEWS: Updated. + * TODO: Updated. + +2014-07-10 Arnold D. Robbins <arnold@skeeve.com> + * awkgram.y (check_for_bad): New routine to do the fatal message, with smarter checking. (nextc): Call it as appropriate. @@ -50,6 +71,13 @@ for bad characters in the source program. (yylex): Adjust calls. +2014-06-24 Arnold D. Robbins <arnold@skeeve.com> + + * main.c (main): The --pretty-print option no longer runs the + program. This removes the need for the GAWK_NO_PP_RUN environment var. + * NEWS: Updated. + * TODO: Updated. + 2014-06-22 Paul Eggert <eggert@penguin.cs.ucla.edu> Bring in from GNULIB: @@ -170,6 +198,13 @@ been moved into the inetfile() function. (two_way_open): Update args to inetfile(). +2014-04-20 Arnold D. Robbins <arnold@skeeve.com> + + * builtin.c (do_rand): Make calls to random() in predictable + order to avoid order of evaluation differences amongst compilers. + Thanks to Anders Magnusson <ragge@ludd.ltu.se> (of the PCC team) + for the suggestion. + 2014-04-18 Arnold D. Robbins <arnold@skeeve.com> * configure.ac: Change adding of -export-dynamic for GCC to be @@ -536,6 +571,11 @@ * main.c (main): Ignore SIGPIPE. See the comment in the code. Thanks to Alan Broder for reporting the issue. + Unrelated: + + * rand.c (do_rand): Fix computation and loop checking against + 1.0 to use do..while. + 2013-10-16 Arnold D. Robbins <arnold@skeeve.com> Make -O work again. Turns out that C99 bool variables @@ -553,6 +593,11 @@ * re.c (resetup): Add a comment about the joy of syntax bits. + Unrelated: + + * builtin.c (do_rand): If result is exactly 1.0, keep trying. + Thanks to Nelson Beebe. + 2013-10-10 Arnold D. Robbins <arnold@skeeve.com> * dfa.c (lex): Sync with GNU grep. Handle multibyte \s and \S. @@ -572,6 +617,13 @@ * dfa.c: Sync with GNU grep. +2013-09-25 Arnold D. Robbins <arnold@skeeve.com> + + * builtin.c (do_rand): Make the result more random by calling + random() twice. See the comment in the code. Thanks to + Bob Jewett <jewett@bill.scs.agilent.com> for the report and + the fix. + 2013-09-24 Arnold D. Robbins <arnold@skeeve.com> * debug.c (find_rule): Handle case where lineno is zero. Can happen @@ -653,6 +705,12 @@ * regcomp.c, regex.h, regex_internal.h: Sync with GLIBC. +2013-08-22 Arnold D. Robbins <arnold@skeeve.com> + + * str_array.c (env_store): If the new value being stored is NULL, + pass in "" instead. Avoids core dump on Mac OS X. + Thanks to Hermann Peifer for the bug report. + 2013-08-20 Arnold D. Robbins <arnold@skeeve.com> * nonposix.h: New file. Contains FAKE_FD_VALUE. @@ -661,6 +719,16 @@ 2013-08-18 Arnold D. Robbins <arnold@skeeve.com> + Reflect updates to ENVIRON into the real environment. + + * awk.h (init_env_array): Add declaration. + * main.c (load_environ): Call init_env_array. + * str_array.c (env_remove, env_store, env_clear, init_env_array): + New functions. + (env_array_func): New array vtable. + +2013-08-18 Arnold D. Robbins <arnold@skeeve.com> + * array.c (force_array): Set symbol->xarray to NULL before initing the array if it was Node_var_new. (null_array): Restore assert, undoing change of 2013-05-27. diff --git a/Makefile.in b/Makefile.in index d243df5b..2abf5b46 100644 --- a/Makefile.in +++ b/Makefile.in @@ -107,7 +107,7 @@ DIST_COMMON = INSTALL NEWS README AUTHORS ChangeLog \ $(srcdir)/Makefile.in $(srcdir)/Makefile.am \ $(top_srcdir)/configure $(am__configure_deps) \ $(srcdir)/configh.in mkinstalldirs ABOUT-NLS awkgram.c \ - command.c depcomp ylwrap $(include_HEADERS) COPYING \ + command.c depcomp ylwrap $(include_HEADERS) COPYING TODO \ config.guess config.rpath config.sub install-sh missing ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 am__aclocal_m4_deps = $(top_srcdir)/m4/arch.m4 \ @@ -4,6 +4,27 @@ are permitted in any medium without royalty provided the copyright notice and this notice are preserved. +Changes from 4.1.x to 4.2.0 +--------------------------- + +1. If not in POSIX mode, changes to ENVIRON are reflected into + gawk's environment, affecting any programs run by system() + or for piped redirections. + +2. The series of numbers returned by rand() should now be "more + random" than previously. Gawk's rand() remains repeatable; you will + get the same series of numbers each time you call rand() repeatedly, + but this will be a different series than previously. + +3. The --pretty-print option no longer runs the program too. + +4. The igawk script and igawk.1 man page are no longer installed by + `make install'. They have been obsolete since gawk 4.0.0. + +5. Gawk now has a `div()' function to perform integer division; this is + primarily useful for the -M option to avoid MPFR division when all + values involved are integers. + Changes from 4.1.1 to 4.1.2 --------------------------- @@ -0,0 +1,199 @@ +Wed Jun 25 22:28:05 IDT 2014 +============================ + +There were too many files tracking different thoughts and ideas for +things to do, or consider doing. This file merges them into one. As +tasks are completed, they should be moved to the DONE section, below, +or simply removed. + +Upon creation of a release (major or patch release), items from the +previous release should be removed. + +This file should exist only in the master branch or branches based off +of it for development, but not in the stable branch. This may require some +careful work with Git. + +TODO +==== + +Minor Cleanups and Code Improvements +------------------------------------ + + Review the bash source script for working with shared libraries in + order to nuke the use of libtool. [ Partially started in the + nolibtool branch. ] + + Enhance profiling to save comments in a byte-code that does nothing + but that can be used when pretty printing the program. + + API: + ??? #if !defined(GAWK) && !defined(GAWK_OMIT_CONVENIENCE_MACROS) + + ?? Add debugger commands to reference card + + Look at function order within files. + + regex.h - remove underscores in param names + + Consider removing use of and/or need for the protos.h file. + + Recheck if gnulib regex can be dropped in + + Fully synchronize whitespace tests (for \s, \S in Unicode + environment) with those of GNU grep. + +Minor New Features +------------------ + + Enhance extension/fork.c waitpid to allow the caller to specify + the options. And add an optional array argument to wait and + waitpid in which to return exit status information. + + Consider relaxing the strictness of --posix. + + Make it possible to put print/printf + redirections into + an expression. + + ? Add an optional base to strtonum, allowing 2-36. + + ? Optional third argument for index indicating where to start the + search. + +Major New Features +------------------ + + Think about how to generalize indirect access. Manuel Collado + suggests things like + + foo = 5 + @"foo" += 4 + + Also needed: + + Indirect calls of built-ins + Indirect calls of extension functions + Indirect through array elements, not just scalar variables + + Some way to make regexp constants first class citizens: + - Assign to variables + - Pass to functions + Tawk has this and it would also make indirect calling of builtins + work more reasonably. Probably would use a special syntax like + @/.../ for such objects. + + Consider a typeof() function that returns a string (scalar, array, + regexp). + + Add ability to do decimal arithmetic. + + Rework management of array index storage. (Partially DONE.) + + Consider using an atom table for all string array indices. + + DBM storage of awk arrays. Try to allow multiple dbm packages. + + ?? A RECLEN variable for fixed-length record input. PROCINFO["RS"] + would be "RS" or "RECLEN" depending upon what's in use. + *** Could this be done as an extension? + + ?? Use a new or improved dfa and/or regex library. + + Rewrite in C++. + +Things To Think About That May Never Happen +------------------------------------------- + + Consider making shadowed variables a warning and not + a fatal warning when --lint=fatal. + + Similar for extra parameters in a function call. + + Look at code coverage tools, like S2E: https://s2e.epfl.ch/ + + Try running with diehard. See http://www.diehard-software.org, + https://github.com/emeryberger/DieHard + + Implement namespaces. Arnold suggested the following in an email: + - Extend the definition of an 'identifier' to include "." as a valid + character although an identifier can't start with it. + - Extension libraries install functions and global variables with names + that have a "." in them: XML.parse(), XML.name, whatever. + - Awk code can read/write such variables and call such functions, + but they cannot define such functions + function XML.foo() { .. } # error + or create a variable with such a name if it doesn't exist. This would + be a run-time error, not a parse-time error. + - This last rule may be too restrictive. + I don't want to get into fancy rules a la perl and file-scope visibility + etc, I'd like to keep things simple. But how we design this is going + to be very important. + + Include a sample rpm spec file in a new packaging subdirectory. + (Really needed?) + + Patch lexer for @include and @load to make quotes optional. + (Really needed?) + + ? Have strftime() pay attention to the value of ENVIRON["TZ"] + + Add a lint check if the return value of a function is used but + the function did not supply a value. + + Consider making gawk output +nan for NaN values so that it + will accept its own output as input. + NOTE: Investigated this. GLIBC formats NaN as '-nan' + and -NaN as 'nan'. Dealing with this is not simple. + + Enhance FIELDWIDTHS with some way to indicate "the rest of the record". + E.g., a length of 0 or -1 or something. Maybe "n"? + + +DONE +==== + +Minor Cleanups and Code Improvements +------------------------------------ + +Minor New Features +------------------ + +Major New Features +------------------ + +Things That We Decided We Will Never Do +======================================= + + Consider moving var_value info into Node_var itself to reduce + memory usage. This would break all uses of get_lhs in the + code. It's too sweeping a change. + + Add macros for working with flags instead of using & and | + directly. + + FIX regular field splitting to use FPAT algorithm. + Note: Looked at this. Not sure it's with the trouble: + If it ain't broke... + + Scope IDs for IPv6 addresses + + Gnulib + + Make FIELDWIDTHS be an array? + + "Do an optimization pass over parse tree?" + This isn't relevant now that we are using a byte code engine. + + "Consider integrating Fred Fish's DBUG library into gawk." + I did this once as an experiment. But I don't see a lot of value + to this at this stage of the development. Stepping through things + in a debugger is generally enough. Also, I would have to try to + track down the latest version of this. + + "Make awk '/foo/' files... run at egrep speeds (how?)" + This has been on the list since the early days (gawk 1.x or early + 2.x). But I am not sure how to really do this, nor have I done + timings, nor does there seem to be any real demand for this. + + Change from dlopen to using the libltdl library (i.e. lt_dlopen). + This may support more platforms. If we move off of libtool + then this is the wrong direction. @@ -1361,6 +1361,7 @@ extern NODE *do_aoption(int nargs); extern NODE *do_asort(int nargs); extern NODE *do_asorti(int nargs); extern unsigned long (*hash)(const char *s, size_t len, unsigned long hsize, size_t *code); +extern void init_env_array(NODE *env_node); /* awkgram.c */ extern NODE *variable(int location, char *name, NODETYPE type); extern int parse_program(INSTRUCTION **pcode); @@ -1418,6 +1419,7 @@ extern AWKNUM nondec2awknum(char *str, size_t len); extern NODE *do_dcgettext(int nargs); extern NODE *do_dcngettext(int nargs); extern NODE *do_bindtextdomain(int nargs); +extern NODE *do_div(int nargs); #if MBS_SUPPORT extern int strncasecmpmbs(const unsigned char *, const unsigned char *, size_t); @@ -1554,6 +1556,7 @@ extern NODE *do_mpfr_and(int); extern NODE *do_mpfr_atan2(int); extern NODE *do_mpfr_compl(int); extern NODE *do_mpfr_cos(int); +extern NODE *do_mpfr_div(int); extern NODE *do_mpfr_exp(int); extern NODE *do_mpfr_int(int); extern NODE *do_mpfr_log(int); @@ -4199,6 +4199,7 @@ static const struct token tokentab[] = { {"dcngettext", Op_builtin, LEX_BUILTIN, GAWKX|A(1)|A(2)|A(3)|A(4)|A(5), do_dcngettext, 0}, {"default", Op_K_default, LEX_DEFAULT, GAWKX, 0, 0}, {"delete", Op_K_delete, LEX_DELETE, NOT_OLD, 0, 0}, +{"div", Op_builtin, LEX_BUILTIN, GAWKX|A(3), do_div, MPF(div)}, {"do", Op_K_do, LEX_DO, NOT_OLD|BREAK|CONTINUE, 0, 0}, {"else", Op_K_else, LEX_ELSE, 0, 0, 0}, {"eval", Op_symbol, LEX_EVAL, 0, 0, 0}, @@ -6244,7 +6245,7 @@ snode(INSTRUCTION *subn, INSTRUCTION *r) } #ifdef HAVE_MPFR - /* N.B.: There isn't any special processing for an alternate function below */ + /* N.B.: If necessary, add special processing for alternate builtin, below */ if (do_mpfr && tokentab[idx].ptr2) r->builtin = tokentab[idx].ptr2; else @@ -6273,6 +6274,15 @@ snode(INSTRUCTION *subn, INSTRUCTION *r) arg = subn->nexti; if (arg->nexti == arg->lasti && arg->nexti->opcode == Op_push) arg->nexti->opcode = Op_push_arg; /* argument may be array */ + } else if (r->builtin == do_div +#ifdef HAVE_MPFR + || r->builtin == MPF(div) +#endif + ) { + arg = subn->nexti->lasti->nexti->lasti->nexti; /* 3rd arg list */ + ip = arg->lasti; + if (ip->opcode == Op_push) + ip->opcode = Op_push_array; } else if (r->builtin == do_match) { static bool warned = false; @@ -1860,6 +1860,7 @@ static const struct token tokentab[] = { {"dcngettext", Op_builtin, LEX_BUILTIN, GAWKX|A(1)|A(2)|A(3)|A(4)|A(5), do_dcngettext, 0}, {"default", Op_K_default, LEX_DEFAULT, GAWKX, 0, 0}, {"delete", Op_K_delete, LEX_DELETE, NOT_OLD, 0, 0}, +{"div", Op_builtin, LEX_BUILTIN, GAWKX|A(3), do_div, MPF(div)}, {"do", Op_K_do, LEX_DO, NOT_OLD|BREAK|CONTINUE, 0, 0}, {"else", Op_K_else, LEX_ELSE, 0, 0, 0}, {"eval", Op_symbol, LEX_EVAL, 0, 0, 0}, @@ -3905,7 +3906,7 @@ snode(INSTRUCTION *subn, INSTRUCTION *r) } #ifdef HAVE_MPFR - /* N.B.: There isn't any special processing for an alternate function below */ + /* N.B.: If necessary, add special processing for alternate builtin, below */ if (do_mpfr && tokentab[idx].ptr2) r->builtin = tokentab[idx].ptr2; else @@ -3934,6 +3935,15 @@ snode(INSTRUCTION *subn, INSTRUCTION *r) arg = subn->nexti; if (arg->nexti == arg->lasti && arg->nexti->opcode == Op_push) arg->nexti->opcode = Op_push_arg; /* argument may be array */ + } else if (r->builtin == do_div +#ifdef HAVE_MPFR + || r->builtin == MPF(div) +#endif + ) { + arg = subn->nexti->lasti->nexti->lasti->nexti; /* 3rd arg list */ + ip = arg->lasti; + if (ip->opcode == Op_push) + ip->opcode = Op_push_array; } else if (r->builtin == do_match) { static bool warned = false; diff --git a/awklib/Makefile.am b/awklib/Makefile.am index 6ffbea81..87ee96b8 100644 --- a/awklib/Makefile.am +++ b/awklib/Makefile.am @@ -39,13 +39,12 @@ AM_CPPFLAGS = -I$(top_builddir) -I$(top_srcdir) pkgdatadir = $(datadir)/awk pkglibexecdir = $(libexecdir)/awk -bin_SCRIPTS = igawk pkglibexec_PROGRAMS = pwcat grcat AUXAWK = passwd.awk group.awk nodist_grcat_SOURCES = grcat.c nodist_pwcat_SOURCES = pwcat.c -all: $(srcdir)/stamp-eg $(AUXPROGS) igawk $(AUXAWK) +all: $(srcdir)/stamp-eg $(AUXPROGS) $(AUXAWK) install-exec-hook: $(AUXAWK) $(mkinstalldirs) $(DESTDIR)$(pkgdatadir) @@ -57,10 +56,9 @@ install-exec-hook: $(AUXAWK) # pkglibexecdir and pkgdatadir are removed in the top level Makefile's uninstall uninstall-local: rm -fr $(DESTDIR)$(pkglibexecdir)/* $(DESTDIR)$(pkgdatadir)/* - rm -f $(DESTDIR)$(bindir)/igawk clean-local: - rm -f $(AUXAWK) igawk *.exe + rm -f $(AUXAWK) *.exe rm -fr eg.old rm -fr grcat.dSYM pwcat.dSYM @@ -72,7 +70,7 @@ $(srcdir)/stamp-eg: $(srcdir)/../doc/gawk.texi $(srcdir)/../doc/gawkinet.texi @echo 'some makes are stupid and will not check a directory' > $(srcdir)/stamp-eg @echo 'against a file, so this file is a place holder. gack.' >> $(srcdir)/stamp-eg -$(srcdir)/eg/lib/pwcat.c $(srcdir)/eg/lib/grcat.c $(srcdir)/eg/prog/igawk.sh \ +$(srcdir)/eg/lib/pwcat.c $(srcdir)/eg/lib/grcat.c \ $(srcdir)/eg/lib/passwdawk.in $(srcdir)/eg/lib/groupawk.in: stamp-eg; @: pwcat$(EXEEXT): $(srcdir)/eg/lib/pwcat.c @@ -81,9 +79,6 @@ pwcat$(EXEEXT): $(srcdir)/eg/lib/pwcat.c grcat$(EXEEXT): $(srcdir)/eg/lib/grcat.c $(COMPILE) $(srcdir)/eg/lib/grcat.c $(LDFLAGS) -o $@ -igawk: $(srcdir)/eg/prog/igawk.sh - cp $(srcdir)/eg/prog/igawk.sh $@ ; chmod 755 $@ - passwd.awk: $(srcdir)/eg/lib/passwdawk.in sed 's;/usr/local/libexec/awk;$(pkglibexecdir);' < $(srcdir)/eg/lib/passwdawk.in > passwd.awk diff --git a/awklib/Makefile.in b/awklib/Makefile.in index d32ae04a..38124fad 100644 --- a/awklib/Makefile.in +++ b/awklib/Makefile.in @@ -37,7 +37,6 @@ # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA # - VPATH = @srcdir@ am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)' am__make_running_with_option = \ @@ -122,7 +121,7 @@ mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs CONFIG_HEADER = $(top_builddir)/config.h CONFIG_CLEAN_FILES = CONFIG_CLEAN_VPATH_FILES = -am__installdirs = "$(DESTDIR)$(pkglibexecdir)" "$(DESTDIR)$(bindir)" +am__installdirs = "$(DESTDIR)$(pkglibexecdir)" PROGRAMS = $(pkglibexec_PROGRAMS) nodist_grcat_OBJECTS = grcat.$(OBJEXT) grcat_OBJECTS = $(nodist_grcat_OBJECTS) @@ -130,34 +129,6 @@ grcat_LDADD = $(LDADD) nodist_pwcat_OBJECTS = pwcat.$(OBJEXT) pwcat_OBJECTS = $(nodist_pwcat_OBJECTS) pwcat_LDADD = $(LDADD) -am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; -am__vpath_adj = case $$p in \ - $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \ - *) f=$$p;; \ - esac; -am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`; -am__install_max = 40 -am__nobase_strip_setup = \ - srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'` -am__nobase_strip = \ - for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||" -am__nobase_list = $(am__nobase_strip_setup); \ - for p in $$list; do echo "$$p $$p"; done | \ - sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \ - $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \ - if (++n[$$2] == $(am__install_max)) \ - { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \ - END { for (dir in files) print dir, files[dir] }' -am__base_list = \ - sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \ - sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g' -am__uninstall_files_from_dir = { \ - test -z "$$files" \ - || { test ! -d "$$dir" && test ! -f "$$dir" && test ! -r "$$dir"; } \ - || { echo " ( cd '$$dir' && rm -f" $$files ")"; \ - $(am__cd) "$$dir" && rm -f $$files; }; \ - } -SCRIPTS = $(bin_SCRIPTS) AM_V_P = $(am__v_P_@AM_V@) am__v_P_ = $(am__v_P_@AM_DEFAULT_V@) am__v_P_0 = false @@ -349,7 +320,6 @@ EXTRA_DIST = ChangeLog ChangeLog.0 extract.awk eg $(srcdir)/stamp-eg # Get config.h from the build directory and custom.h from the source directory. AM_CPPFLAGS = -I$(top_builddir) -I$(top_srcdir) -bin_SCRIPTS = igawk AUXAWK = passwd.awk group.awk nodist_grcat_SOURCES = grcat.c nodist_pwcat_SOURCES = pwcat.c @@ -429,41 +399,6 @@ uninstall-pkglibexecPROGRAMS: clean-pkglibexecPROGRAMS: -test -z "$(pkglibexec_PROGRAMS)" || rm -f $(pkglibexec_PROGRAMS) -install-binSCRIPTS: $(bin_SCRIPTS) - @$(NORMAL_INSTALL) - @list='$(bin_SCRIPTS)'; test -n "$(bindir)" || list=; \ - if test -n "$$list"; then \ - echo " $(MKDIR_P) '$(DESTDIR)$(bindir)'"; \ - $(MKDIR_P) "$(DESTDIR)$(bindir)" || exit 1; \ - fi; \ - for p in $$list; do \ - if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \ - if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \ - done | \ - sed -e 'p;s,.*/,,;n' \ - -e 'h;s|.*|.|' \ - -e 'p;x;s,.*/,,;$(transform)' | sed 'N;N;N;s,\n, ,g' | \ - $(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1; } \ - { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \ - if ($$2 == $$4) { files[d] = files[d] " " $$1; \ - if (++n[d] == $(am__install_max)) { \ - print "f", d, files[d]; n[d] = 0; files[d] = "" } } \ - else { print "f", d "/" $$4, $$1 } } \ - END { for (d in files) print "f", d, files[d] }' | \ - while read type dir files; do \ - if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \ - test -z "$$files" || { \ - echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(bindir)$$dir'"; \ - $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(bindir)$$dir" || exit $$?; \ - } \ - ; done - -uninstall-binSCRIPTS: - @$(NORMAL_UNINSTALL) - @list='$(bin_SCRIPTS)'; test -n "$(bindir)" || exit 0; \ - files=`for p in $$list; do echo "$$p"; done | \ - sed -e 's,.*/,,;$(transform)'`; \ - dir='$(DESTDIR)$(bindir)'; $(am__uninstall_files_from_dir) mostlyclean-compile: -rm -f *.$(OBJEXT) @@ -572,9 +507,9 @@ distdir: $(DISTFILES) done check-am: all-am check: check-am -all-am: Makefile $(PROGRAMS) $(SCRIPTS) +all-am: Makefile $(PROGRAMS) installdirs: - for dir in "$(DESTDIR)$(pkglibexecdir)" "$(DESTDIR)$(bindir)"; do \ + for dir in "$(DESTDIR)$(pkglibexecdir)"; do \ test -z "$$dir" || $(MKDIR_P) "$$dir"; \ done install: install-am @@ -636,7 +571,7 @@ install-dvi: install-dvi-am install-dvi-am: -install-exec-am: install-binSCRIPTS install-pkglibexecPROGRAMS +install-exec-am: install-pkglibexecPROGRAMS @$(NORMAL_INSTALL) $(MAKE) $(AM_MAKEFLAGS) install-exec-hook install-html: install-html-am @@ -676,8 +611,7 @@ ps: ps-am ps-am: -uninstall-am: uninstall-binSCRIPTS uninstall-local \ - uninstall-pkglibexecPROGRAMS +uninstall-am: uninstall-local uninstall-pkglibexecPROGRAMS .MAKE: install-am install-exec-am install-strip @@ -685,20 +619,19 @@ uninstall-am: uninstall-binSCRIPTS uninstall-local \ clean-local clean-pkglibexecPROGRAMS cscopelist-am ctags \ ctags-am distclean distclean-compile distclean-generic \ distclean-tags distdir dvi dvi-am html html-am info info-am \ - install install-am install-binSCRIPTS install-data \ - install-data-am install-dvi install-dvi-am install-exec \ - install-exec-am install-exec-hook install-html install-html-am \ - install-info install-info-am install-man install-pdf \ - install-pdf-am install-pkglibexecPROGRAMS install-ps \ - install-ps-am install-strip installcheck installcheck-am \ - installdirs maintainer-clean maintainer-clean-generic \ - mostlyclean mostlyclean-compile mostlyclean-generic pdf pdf-am \ - ps ps-am tags tags-am uninstall uninstall-am \ - uninstall-binSCRIPTS uninstall-local \ + install install-am install-data install-data-am install-dvi \ + install-dvi-am install-exec install-exec-am install-exec-hook \ + install-html install-html-am install-info install-info-am \ + install-man install-pdf install-pdf-am \ + install-pkglibexecPROGRAMS install-ps install-ps-am \ + install-strip installcheck installcheck-am installdirs \ + maintainer-clean maintainer-clean-generic mostlyclean \ + mostlyclean-compile mostlyclean-generic pdf pdf-am ps ps-am \ + tags tags-am uninstall uninstall-am uninstall-local \ uninstall-pkglibexecPROGRAMS -all: $(srcdir)/stamp-eg $(AUXPROGS) igawk $(AUXAWK) +all: $(srcdir)/stamp-eg $(AUXPROGS) $(AUXAWK) install-exec-hook: $(AUXAWK) $(mkinstalldirs) $(DESTDIR)$(pkgdatadir) @@ -710,10 +643,9 @@ install-exec-hook: $(AUXAWK) # pkglibexecdir and pkgdatadir are removed in the top level Makefile's uninstall uninstall-local: rm -fr $(DESTDIR)$(pkglibexecdir)/* $(DESTDIR)$(pkgdatadir)/* - rm -f $(DESTDIR)$(bindir)/igawk clean-local: - rm -f $(AUXAWK) igawk *.exe + rm -f $(AUXAWK) *.exe rm -fr eg.old rm -fr grcat.dSYM pwcat.dSYM @@ -725,7 +657,7 @@ $(srcdir)/stamp-eg: $(srcdir)/../doc/gawk.texi $(srcdir)/../doc/gawkinet.texi @echo 'some makes are stupid and will not check a directory' > $(srcdir)/stamp-eg @echo 'against a file, so this file is a place holder. gack.' >> $(srcdir)/stamp-eg -$(srcdir)/eg/lib/pwcat.c $(srcdir)/eg/lib/grcat.c $(srcdir)/eg/prog/igawk.sh \ +$(srcdir)/eg/lib/pwcat.c $(srcdir)/eg/lib/grcat.c \ $(srcdir)/eg/lib/passwdawk.in $(srcdir)/eg/lib/groupawk.in: stamp-eg; @: pwcat$(EXEEXT): $(srcdir)/eg/lib/pwcat.c @@ -734,9 +666,6 @@ pwcat$(EXEEXT): $(srcdir)/eg/lib/pwcat.c grcat$(EXEEXT): $(srcdir)/eg/lib/grcat.c $(COMPILE) $(srcdir)/eg/lib/grcat.c $(LDFLAGS) -o $@ -igawk: $(srcdir)/eg/prog/igawk.sh - cp $(srcdir)/eg/prog/igawk.sh $@ ; chmod 755 $@ - passwd.awk: $(srcdir)/eg/lib/passwdawk.in sed 's;/usr/local/libexec/awk;$(pkglibexecdir);' < $(srcdir)/eg/lib/passwdawk.in > passwd.awk @@ -2406,6 +2406,8 @@ static char *const state = (char *const) istate; NODE * do_rand(int nargs ATTRIBUTE_UNUSED) { + double tmprand; +#define RAND_DIVISOR ((double)GAWK_RANDOM_MAX+1.0) if (firstrand) { (void) initstate((unsigned) 1, state, SIZEOF_STATE); /* don't need to srandom(1), initstate() does it for us. */ @@ -2417,7 +2419,66 @@ do_rand(int nargs ATTRIBUTE_UNUSED) * * 0 <= n < 1 */ - return make_number((AWKNUM) (random() % GAWK_RANDOM_MAX) / GAWK_RANDOM_MAX); + /* + * Date: Wed, 28 Aug 2013 17:52:46 -0700 + * From: Bob Jewett <jewett@bill.scs.agilent.com> + * + * Call random() twice to fill in more bits in the value + * of the double. Also, there is a bug in random() such + * that when the values of successive values are combined + * like (rand1*rand2)^2, (rand3*rand4)^2, ... the + * resulting time series is not white noise. The + * following also seems to fix that bug. + * + * The add/subtract 0.5 keeps small bits from filling + * below 2^-53 in the double, not that anyone should be + * looking down there. + * + * Date: Wed, 25 Sep 2013 10:45:38 -0600 (MDT) + * From: "Nelson H. F. Beebe" <beebe@math.utah.edu> + * (4) The code is typical of many published fragments for converting + * from integer to floating-point, and I discuss the serious pitfalls + * in my book, because it leads to platform-dependent behavior at the + * end points of the interval [0,1] + * + * (5) the documentation in the gawk info node says + * + * `rand()' + * Return a random number. The values of `rand()' are uniformly + * distributed between zero and one. The value could be zero but is + * never one.(1) + * + * The division by RAND_DIVISOR may not guarantee that 1.0 is never + * returned: the programmer forgot the platform-dependent issue of + * rounding. + * + * For points 4 and 5, the safe way is a loop: + * + * double + * rand(void) // return value in [0.0, 1.0) + * { + * value = internal_rand(); + * + * while (value == 1.0) + * value = internal_rand(); + * + * return (value); + * } + */ + + do { + long d1, d2; + /* + * Do the calls in predictable order to avoid + * compiler differences in order of evaluation. + */ + d1 = random(); + d2 = random(); + tmprand = 0.5 + ( (d1/RAND_DIVISOR + d2) / RAND_DIVISOR ); + tmprand -= 0.5; + } while (tmprand == 1.0); + + return make_number((AWKNUM) tmprand); } /* do_srand --- seed the random number generator */ @@ -3564,6 +3625,72 @@ do_bindtextdomain(int nargs) return make_string(the_result, strlen(the_result)); } +/* do_div --- do integer division, return quotient and remainder in dest array */ + +/* + * We define the semantics as: + * numerator = int(numerator) + * denominator = int(denonmator) + * quotient = int(numerator / denomator) + * remainder = int(numerator % denomator) + */ + +NODE * +do_div(int nargs) +{ + NODE *numerator, *denominator, *result; + double num, denom, quotient, remainder; + NODE *sub, **lhs; + + result = POP_PARAM(); + if (result->type != Node_var_array) + fatal(_("div: third argument is not an array")); + assoc_clear(result); + + denominator = POP_SCALAR(); + numerator = POP_SCALAR(); + + if (do_lint) { + if ((numerator->flags & (NUMCUR|NUMBER)) == 0) + lintwarn(_("div: received non-numeric first argument")); + if ((denominator->flags & (NUMCUR|NUMBER)) == 0) + lintwarn(_("div: received non-numeric second argument")); + } + + (void) force_number(numerator); + (void) force_number(denominator); + num = double_to_int(get_number_d(numerator)); + denom = double_to_int(get_number_d(denominator)); + + if (denom == 0.0) + fatal(_("div: division by zero attempted")); + + quotient = double_to_int(num / denom); + /* + * FIXME: This code is duplicated, factor it out to a + * separate function. + */ +#ifdef HAVE_FMOD + remainder = fmod(num, denom); +#else /* ! HAVE_FMOD */ + (void) modf(num / denom, & remainder); + remainder = num - remainder * denom; +#endif /* ! HAVE_FMOD */ + remainder = double_to_int(remainder); + + sub = make_string("quotient", 8); + lhs = assoc_lookup(result, sub); + unref(*lhs); + *lhs = make_number((AWKNUM) quotient); + + sub = make_string("remainder", 9); + lhs = assoc_lookup(result, sub); + unref(*lhs); + *lhs = make_number((AWKNUM) remainder); + + return make_number((AWKNUM) 0.0); +} + /* mbc_byte_count --- return number of bytes for corresponding numchars multibyte characters */ @@ -1,6 +1,6 @@ #! /bin/sh # Guess values for system-dependent variables and create Makefiles. -# Generated by GNU Autoconf 2.69 for GNU Awk 4.1.1a. +# Generated by GNU Autoconf 2.69 for GNU Awk 4.1.60. # # Report bugs to <bug-gawk@gnu.org>. # @@ -580,8 +580,8 @@ MAKEFLAGS= # Identity of this package. PACKAGE_NAME='GNU Awk' PACKAGE_TARNAME='gawk' -PACKAGE_VERSION='4.1.1a' -PACKAGE_STRING='GNU Awk 4.1.1a' +PACKAGE_VERSION='4.1.60' +PACKAGE_STRING='GNU Awk 4.1.60' PACKAGE_BUGREPORT='bug-gawk@gnu.org' PACKAGE_URL='http://www.gnu.org/software/gawk/' @@ -1324,7 +1324,7 @@ if test "$ac_init_help" = "long"; then # Omit some internal or obsolete options to make the list less imposing. # This message is too long to be a string in the A/UX 3.1 sh. cat <<_ACEOF -\`configure' configures GNU Awk 4.1.1a to adapt to many kinds of systems. +\`configure' configures GNU Awk 4.1.60 to adapt to many kinds of systems. Usage: $0 [OPTION]... [VAR=VALUE]... @@ -1394,7 +1394,7 @@ fi if test -n "$ac_init_help"; then case $ac_init_help in - short | recursive ) echo "Configuration of GNU Awk 4.1.1a:";; + short | recursive ) echo "Configuration of GNU Awk 4.1.60:";; esac cat <<\_ACEOF @@ -1512,7 +1512,7 @@ fi test -n "$ac_init_help" && exit $ac_status if $ac_init_version; then cat <<\_ACEOF -GNU Awk configure 4.1.1a +GNU Awk configure 4.1.60 generated by GNU Autoconf 2.69 Copyright (C) 2012 Free Software Foundation, Inc. @@ -2221,7 +2221,7 @@ cat >config.log <<_ACEOF This file contains any messages produced by compilers while running configure, to aid debugging if configure makes a mistake. -It was created by GNU Awk $as_me 4.1.1a, which was +It was created by GNU Awk $as_me 4.1.60, which was generated by GNU Autoconf 2.69. Invocation command line was $ $0 $@ @@ -3104,7 +3104,7 @@ fi # Define the identity of the package. PACKAGE='gawk' - VERSION='4.1.1a' + VERSION='4.1.60' cat >>confdefs.h <<_ACEOF @@ -11506,7 +11506,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 # report actual input values of CONFIG_FILES etc. instead of their # values after options handling. ac_log=" -This file was extended by GNU Awk $as_me 4.1.1a, which was +This file was extended by GNU Awk $as_me 4.1.60, which was generated by GNU Autoconf 2.69. Invocation command line was CONFIG_FILES = $CONFIG_FILES @@ -11574,7 +11574,7 @@ _ACEOF cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`" ac_cs_version="\\ -GNU Awk config.status 4.1.1a +GNU Awk config.status 4.1.60 configured by $0, generated by GNU Autoconf 2.69, with options \\"\$ac_cs_config\\" diff --git a/configure.ac b/configure.ac index b0817ba3..e7e2d5f6 100644 --- a/configure.ac +++ b/configure.ac @@ -23,7 +23,7 @@ dnl dnl Process this file with autoconf to produce a configure script. -AC_INIT([GNU Awk], 4.1.1a, bug-gawk@gnu.org, gawk) +AC_INIT([GNU Awk], 4.1.60, bug-gawk@gnu.org, gawk) # This is a hack. Different versions of install on different systems # are just too different. Chuck it and use install-sh. diff --git a/doc/ChangeLog b/doc/ChangeLog index 43646426..9bf0b156 100644 --- a/doc/ChangeLog +++ b/doc/ChangeLog @@ -1,3 +1,15 @@ +2014-07-24 Arnold D. Robbins <arnold@skeeve.com> + + * gawktexi.in (Numeric Functions): For `div()', clarify + truncation is towards zero. Thanks to Michal Jaegermann + for pointing out the need to clarify this. + +2014-07-10 Arnold D. Robbins <arnold@skeeve.com> + + * gawktexi.in (Numeric Functions): Document new `div()' function. + (Arbitrary Precision Integers): Document raison d'etre for div(). + * gawk.1, awkcard.in: Document `div()'. + 2014-07-04 Arnold D. Robbins <arnold@skeeve.com> * gawktexi.in (Bracket Expressions): Add a note about how to @@ -8,6 +20,11 @@ * gawktexi.in: Update permissions on copyright page per latest maintain.texi. Add GPL to print version of book. +2014-06-24 Arnold D. Robbins <arnold@skeeve.com> + + * gawktexi.in: Document that --pretty-print no longer runs the + program. Remove mention of GAWK_NO_PP_RUN env var. + 2014-06-22 Arnold D. Robbins <arnold@skeeve.com> * gawktexi.in: Typo fixes and minor corrections. @@ -304,7 +321,7 @@ 2013-12-26 Arnold D. Robbins <arnold@skeeve.com> * gawktexi.in: More minor additions / fixes. - (Bugs): Add John Malmberg for VMS. + (Bugs): Add John Malmberg for VMS. Other minor edits. 2013-12-25 Arnold D. Robbins <arnold@skeeve.com> @@ -378,6 +395,11 @@ * gawktexi.in (FN, FFN, DF,DDF, PVERSION, CTL): Remove macros. They have no alternate versions and are just in the way. +2013-08-15 Arnold D. Robbins <arnold@skeeve.com> + + * gawk.1: Document that ENVIRON updates affect the environment. + * gawktexi.in: Ditto. + 2013-06-27 Arnold D. Robbins <arnold@skeeve.com> * texinfo.tex: Update from Karl, fixes a formating problem. diff --git a/doc/Makefile.am b/doc/Makefile.am index 86321bbc..8a0442a7 100644 --- a/doc/Makefile.am +++ b/doc/Makefile.am @@ -26,7 +26,7 @@ info_TEXINFOS = gawk.texi gawkinet.texi -man_MANS = gawk.1 igawk.1 +man_MANS = gawk.1 EXTRA_DIST = ChangeLog ChangeLog.0 README.card ad.block setter.outline \ awkcard.in awkforai.txt texinfo.tex cardfonts \ @@ -50,7 +50,7 @@ EXTRA_DIST = ChangeLog ChangeLog.0 README.card ad.block setter.outline \ bc_notes # Get rid of generated files when cleaning -CLEANFILES = *.ps *.html *.dvi *~ awkcard.nc awkcard.tr gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf igawk.1.pdf +CLEANFILES = *.ps *.html *.dvi *~ awkcard.nc awkcard.tr gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf MAKEINFO = @MAKEINFO@ --no-split --force @@ -75,9 +75,9 @@ AWKCARD = awkcard.ps gawk.texi: $(srcdir)/gawktexi.in $(srcdir)/sidebar.awk awk -f $(srcdir)/sidebar.awk < $(srcdir)/gawktexi.in > gawk.texi -postscript: gawk.ps gawkinet.ps gawk.1.ps igawk.1.ps $(AWKCARD) +postscript: gawk.ps gawkinet.ps gawk.1.ps $(AWKCARD) -pdf: postscript gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf igawk.1.pdf +pdf: postscript gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf gawk.ps: gawk.dvi TEXINPUTS=$(srcdir): dvips -o gawk.ps gawk.dvi @@ -91,12 +91,6 @@ gawk.1.ps: gawk.1 gawk.1.pdf: gawk.1.ps ps2pdf gawk.1.ps gawk.1.pdf -igawk.1.ps: igawk.1 - -groff -man $(srcdir)/igawk.1 > igawk.1.ps - -igawk.1.pdf: igawk.1.ps - ps2pdf igawk.1.ps igawk.1.pdf - awkcard.tr: awkcard.in sed 's:SRCDIR:$(srcdir):' < $(srcdir)/awkcard.in > awkcard.tr diff --git a/doc/Makefile.in b/doc/Makefile.in index abaf5601..d89beffd 100644 --- a/doc/Makefile.in +++ b/doc/Makefile.in @@ -341,7 +341,7 @@ top_build_prefix = @top_build_prefix@ top_builddir = @top_builddir@ top_srcdir = @top_srcdir@ info_TEXINFOS = gawk.texi gawkinet.texi -man_MANS = gawk.1 igawk.1 +man_MANS = gawk.1 EXTRA_DIST = ChangeLog ChangeLog.0 README.card ad.block setter.outline \ awkcard.in awkforai.txt texinfo.tex cardfonts \ api-figure1.eps api-figure1.fig api-figure1.pdf \ @@ -365,7 +365,7 @@ EXTRA_DIST = ChangeLog ChangeLog.0 README.card ad.block setter.outline \ # Get rid of generated files when cleaning -CLEANFILES = *.ps *.html *.dvi *~ awkcard.nc awkcard.tr gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf igawk.1.pdf +CLEANFILES = *.ps *.html *.dvi *~ awkcard.nc awkcard.tr gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf TROFF = groff -t -Tps -U SEDME = sed -e "s/^level0 restore/level0 restore flashme 100 72 moveto (Copyright `date '+%m-%d-%y %T'`, FSF, Inc. (all)) show/" \ -e "s/^\/level0 save def/\/level0 save def 30 -48 translate/" @@ -869,9 +869,9 @@ uninstall-man: uninstall-man1 gawk.texi: $(srcdir)/gawktexi.in $(srcdir)/sidebar.awk awk -f $(srcdir)/sidebar.awk < $(srcdir)/gawktexi.in > gawk.texi -postscript: gawk.ps gawkinet.ps gawk.1.ps igawk.1.ps $(AWKCARD) +postscript: gawk.ps gawkinet.ps gawk.1.ps $(AWKCARD) -pdf: postscript gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf igawk.1.pdf +pdf: postscript gawk.pdf gawkinet.pdf awkcard.pdf gawk.1.pdf gawk.ps: gawk.dvi TEXINPUTS=$(srcdir): dvips -o gawk.ps gawk.dvi @@ -885,12 +885,6 @@ gawk.1.ps: gawk.1 gawk.1.pdf: gawk.1.ps ps2pdf gawk.1.ps gawk.1.pdf -igawk.1.ps: igawk.1 - -groff -man $(srcdir)/igawk.1 > igawk.1.ps - -igawk.1.pdf: igawk.1.ps - ps2pdf igawk.1.ps igawk.1.pdf - awkcard.tr: awkcard.in sed 's:SRCDIR:$(srcdir):' < $(srcdir)/awkcard.in > awkcard.tr diff --git a/doc/awkcard.in b/doc/awkcard.in index ca28f0a7..556bdc1e 100644 --- a/doc/awkcard.in +++ b/doc/awkcard.in @@ -1609,6 +1609,9 @@ expand; l lw(2i). \*(CD\*(FCatan2(\*(FIy\*(FC, \*(FIx\*(FC)\*(FR The arctangent of \*(FIy/x\fP in radians. \*(FCcos(\*(FIexpr\*(FC)\*(FR The cosine of \*(FIexpr\fP, which is in radians. +\*(CB\*(FCdiv(\*(FIn\*(FR\*(FC,\*(FI d\*(FR\*(FC,\*(FI res\*(FR\*(FC)\*(FR T{ +Return the result of integer division in \*(FIres\*(FR.\*(CD +T} \*(FCexp(\*(FIexpr\*(FC)\*(FR The exponential function (\*(FIe \*(FC^ \*(FIx\*(FR). \*(FCint(\*(FIexpr\*(FC)\*(FR Truncate to integer. \*(FClog(\*(FIexpr\*(FC)\*(FR The natural logarithm function (base \*(FIe\^\*(FR). @@ -13,7 +13,7 @@ . if \w'\(rq' .ds rq "\(rq . \} .\} -.TH GAWK 1 "Apr 17 2014" "Free Software Foundation" "Utility Commands" +.TH GAWK 1 "Jul 10 2014" "Free Software Foundation" "Utility Commands" .SH NAME gawk \- pattern scanning and processing language .SH SYNOPSIS @@ -917,11 +917,17 @@ An array containing the values of the current environment. The array is indexed by the environment variables, each element being the value of that variable (e.g., \fBENVIRON["HOME"]\fP might be \fB"/home/arnold"\fR). -Changing this array does not affect the environment seen by programs which +.sp +In POSIX mode, +changing this array does not affect the environment seen by programs which .I gawk spawns via redirection or the .B system() function. +Otherwise, +.I gawk +updates its real environment so that programs it spawns see +the changes. .TP .B ERRNO If a system error occurs either doing a redirection for @@ -2623,6 +2629,23 @@ Return the cosine of .IR expr , which is in radians. .TP +.BI div( num ", " denom ", " result ) +Truncate +.I num +and +.I denom +to integers. Return the quotient of +.I num +divided by +.I denom +in \fIresult\fB["quotient"]\fR +and the remainder in +in \fIresult\fB["remainder"]\fR. +This is a +.I gawk +extension, primarily of value when working with +arbitrarily large integers. +.TP .BI exp( expr ) The exponential function. .TP diff --git a/doc/gawk.info b/doc/gawk.info index 8b5e572f..e6c9a5d4 100644 --- a/doc/gawk.info +++ b/doc/gawk.info @@ -2563,10 +2563,8 @@ The following list describes options mandated by the POSIX standard: different file name for the output. No space is allowed between the `-o' and FILE, if FILE is supplied. - NOTE: Due to the way `gawk' has evolved, with this option - your program is still executed. This will change in the next - major release such that `gawk' will only pretty-print the - program and not run it. + NOTE: In the past, this option would also execute your + program. This is no longer the case. `-O' `--optimize' @@ -2950,11 +2948,6 @@ change. The variables are: supposed to be differences, but occasionally theory and practice don't coordinate with each other.) -`GAWK_NO_PP_RUN' - If this variable exists, then when invoked with the - `--pretty-print' option, `gawk' skips running the program. This - variable will not survive into the next major release. - `GAWK_STACKSIZE' This specifies the amount by which `gawk' should grow its internal evaluation stack, when needed. @@ -10163,10 +10156,18 @@ Options::), they are not special. An associative array containing the values of the environment. The array indices are the environment variable names; the elements are the values of the particular environment variables. For - example, `ENVIRON["HOME"]' might be `"/home/arnold"'. Changing - this array does not affect the environment passed on to any - programs that `awk' may spawn via redirection or the `system()' - function. (In a future version of `gawk', it may do so.) + example, `ENVIRON["HOME"]' might be `/home/arnold'. + + For POSIX `awk', changing this array does not affect the + environment passed on to any programs that `awk' may spawn via + redirection or the `system()' function. + + However, beginning with version 4.2, if not in POSIX compatibility + mode, `gawk' does update its own environment when `ENVIRON' is + changed, thus changing the environment seen by programs that it + creates. You should therefore be especially careful if you modify + `ENVIRON["PATH"]"', which is the search path for finding + executable programs. Some operating systems may not have environment variables. On such systems, the `ENVIRON' array is empty (except for @@ -11679,6 +11680,21 @@ brackets ([ ]): `cos(X)' Return the cosine of X, with X in radians. +`div(NUMERATOR, DENOMINATOR, RESULT)' + Perform integer division, similar to the standard C function of the + same name. First, truncate `numerator' and `denominator' towards + zero, creating integer values. Clear the `result' array, and then + set `result["quotient"]' to the result of `numerator / + denominator', truncated towards zero to an integer, and set + `result["remainder"]' to the result of `numerator % denominator', + truncated towards zero to an integer. This function is primarily + intended for use with arbitrary length integers; it avoids + creating MPFR arbitrary precision floating-point values (*note + Arbitrary Precision Integers::). + + This function is a `gawk' extension. It is not available in + compatibility mode (*note Options::). + `exp(X)' Return the exponential of X (`e ^ X') or report an error if X is out of range. The range of values X can have depends on your @@ -19635,8 +19651,8 @@ by the `Ctrl-<\>' key. called this way, `gawk' "pretty prints" the program into `awkprof.out', without any execution counts. - NOTE: The `--pretty-print' option still runs your program. This - will change in the next major release. + NOTE: Once upon a time, the `--pretty-print' option would also run + your program. This is is no longer the case. File: gawk.info, Node: Advanced Features Summary, Prev: Profiling, Up: Advanced Features @@ -22081,6 +22097,29 @@ just use the following: gawk -M 'BEGIN { n = 13; print n % 2 }' + When dividing two arbitrary precision integers with either `/' or +`%', the result is typically an arbitrary precision floating point +value (unless the denominator evenly divides into the numerator). In +order to do integer division or remainder with arbitrary precision +integers, use the built-in `div()' function (*note Numeric Functions::). + + You can simulate the `div()' function in standard `awk' using this +user-defined function: + + # div --- do integer division + + function div(numerator, denominator, result, i) + { + split("", result) + + numerator = int(numerator) + denominator = int(denominator) + result["quotient"] = int(numerator / denominator) + result["remainder"] = int(numerator % denominator) + + return 0.0 + } + ---------- Footnotes ---------- (1) Weisstein, Eric W. `Sylvester's Sequence'. From MathWorld--A @@ -27005,7 +27044,9 @@ Various `.c', `.y', and `.h' files `doc/igawk.1' The `troff' source for a manual page describing the `igawk' - program presented in *note Igawk Program::. + program presented in *note Igawk Program::. (Since `gawk' can do + its own `@include' processing, neither `igawk' nor `igawk.1' are + installed.) `doc/Makefile.in' The input file used during the configuration process to generate @@ -27047,11 +27088,10 @@ Various `.c', `.y', and `.h' files contains a `Makefile.in' file, which `configure' uses to generate a `Makefile'. `Makefile.am' is used by GNU Automake to create `Makefile.in'. The library functions from *note Library - Functions::, and the `igawk' program from *note Igawk Program::, - are included as ready-to-use files in the `gawk' distribution. - They are installed as part of the installation process. The rest - of the programs in this Info file are available in appropriate - subdirectories of `awklib/eg'. + Functions::, are included as ready-to-use files in the `gawk' + distribution. They are installed as part of the installation + process. The rest of the programs in this Info file are available + in appropriate subdirectories of `awklib/eg'. `extension/*' The source code, manual pages, and infrastructure files for the @@ -30984,20 +31024,20 @@ Index * --include option: Options. (line 159) * --lint option <1>: Options. (line 185) * --lint option: Command Line. (line 20) -* --lint-old option: Options. (line 295) +* --lint-old option: Options. (line 293) * --load option: Options. (line 173) * --non-decimal-data option <1>: Nondecimal Data. (line 6) * --non-decimal-data option: Options. (line 211) * --non-decimal-data option, strtonum() function and: Nondecimal Data. (line 36) -* --optimize option: Options. (line 237) -* --posix option: Options. (line 254) -* --posix option, --traditional option and: Options. (line 273) +* --optimize option: Options. (line 235) +* --posix option: Options. (line 252) +* --posix option, --traditional option and: Options. (line 271) * --pretty-print option: Options. (line 224) * --profile option <1>: Profiling. (line 12) -* --profile option: Options. (line 242) -* --re-interval option: Options. (line 279) -* --sandbox option: Options. (line 286) +* --profile option: Options. (line 240) +* --re-interval option: Options. (line 277) +* --sandbox option: Options. (line 284) * --sandbox option, disabling system() function: I/O Functions. (line 97) * --sandbox option, input redirection with getline: Getline. (line 19) @@ -31005,9 +31045,9 @@ Index (line 6) * --source option: Options. (line 117) * --traditional option: Options. (line 81) -* --traditional option, --posix option and: Options. (line 273) +* --traditional option, --posix option and: Options. (line 271) * --use-lc-numeric option: Options. (line 219) -* --version option: Options. (line 300) +* --version option: Options. (line 298) * --with-whiny-user-strftime configuration option: Additional Configuration Options. (line 35) * -b option: Options. (line 68) @@ -31020,26 +31060,26 @@ Index * -f option: Options. (line 25) * -F option: Options. (line 21) * -f option: Long. (line 12) -* -F option, -Ft sets FS to TAB: Options. (line 308) +* -F option, -Ft sets FS to TAB: Options. (line 306) * -F option, command line: Command Line Field Separator. (line 6) -* -f option, multiple uses: Options. (line 313) +* -f option, multiple uses: Options. (line 311) * -g option: Options. (line 147) * -h option: Options. (line 154) * -i option: Options. (line 159) -* -L option: Options. (line 295) +* -L option: Options. (line 293) * -l option: Options. (line 173) * -M option: Options. (line 205) * -N option: Options. (line 219) * -n option: Options. (line 211) -* -O option: Options. (line 237) +* -O option: Options. (line 235) * -o option: Options. (line 224) -* -P option: Options. (line 254) -* -p option: Options. (line 242) -* -r option: Options. (line 279) -* -S option: Options. (line 286) +* -P option: Options. (line 252) +* -p option: Options. (line 240) +* -r option: Options. (line 277) +* -S option: Options. (line 284) * -v option: Assignment Options. (line 12) -* -V option: Options. (line 300) +* -V option: Options. (line 298) * -v option: Options. (line 32) * -W option: Options. (line 46) * . (period), regexp operator: Regexp Operators. (line 44) @@ -31312,7 +31352,7 @@ Index * awf (amazingly workable formatter) program: Glossary. (line 24) * awk debugging, enabling: Options. (line 108) * awk language, POSIX version: Assignment Ops. (line 137) -* awk profiling, enabling: Options. (line 242) +* awk profiling, enabling: Options. (line 240) * awk programs <1>: Two Rules. (line 6) * awk programs <2>: Executable Scripts. (line 6) * awk programs: Getting Started. (line 12) @@ -31719,7 +31759,7 @@ Index * cosine: Numeric Functions. (line 15) * counting: Wc Program. (line 6) * csh utility: Statements/Lines. (line 44) -* csh utility, POSIXLY_CORRECT environment variable: Options. (line 355) +* csh utility, POSIXLY_CORRECT environment variable: Options. (line 353) * csh utility, |& operator, comparison with: Two-way I/O. (line 44) * ctime() user-defined function: Function Example. (line 73) * currency symbols, localization: Explaining gettext. (line 104) @@ -31754,9 +31794,9 @@ Index * dark corner, exit statement: Exit Statement. (line 30) * dark corner, field separators: Field Splitting Summary. (line 46) -* dark corner, FILENAME variable <1>: Auto-set. (line 90) +* dark corner, FILENAME variable <1>: Auto-set. (line 98) * dark corner, FILENAME variable: Getline Notes. (line 19) -* dark corner, FNR/NR variables: Auto-set. (line 301) +* dark corner, FNR/NR variables: Auto-set. (line 309) * dark corner, format-control characters: Control Letters. (line 18) * dark corner, FS as null string: Single Character Fields. (line 20) @@ -31902,7 +31942,7 @@ Index * debugger, read commands from a file: Debugger Info. (line 96) * debugging awk programs: Debugger. (line 6) * debugging gawk, bug reports: Bugs. (line 9) -* decimal point character, locale specific: Options. (line 270) +* decimal point character, locale specific: Options. (line 268) * decrement operators: Increment Ops. (line 35) * default keyword: Switch Statement. (line 6) * Deifik, Scott <1>: Bugs. (line 71) @@ -31941,12 +31981,12 @@ Index (line 81) * differences in awk and gawk, command line directories: Command line directories. (line 6) -* differences in awk and gawk, ERRNO variable: Auto-set. (line 74) +* differences in awk and gawk, ERRNO variable: Auto-set. (line 82) * differences in awk and gawk, error messages: Special FD. (line 16) * differences in awk and gawk, FIELDWIDTHS variable: User-modified. (line 37) * differences in awk and gawk, FPAT variable: User-modified. (line 43) -* differences in awk and gawk, FUNCTAB variable: Auto-set. (line 115) +* differences in awk and gawk, FUNCTAB variable: Auto-set. (line 123) * differences in awk and gawk, function arguments (gawk): Calling Built-in. (line 16) * differences in awk and gawk, getline command: Getline. (line 19) @@ -31969,7 +32009,7 @@ Index (line 260) * differences in awk and gawk, print/printf statements: Format Modifiers. (line 13) -* differences in awk and gawk, PROCINFO array: Auto-set. (line 128) +* differences in awk and gawk, PROCINFO array: Auto-set. (line 136) * differences in awk and gawk, read timeouts: Read Timeout. (line 6) * differences in awk and gawk, record separators: awk split records. (line 124) @@ -31979,7 +32019,7 @@ Index (line 26) * differences in awk and gawk, RS/RT variables: gawk split records. (line 58) -* differences in awk and gawk, RT variable: Auto-set. (line 257) +* differences in awk and gawk, RT variable: Auto-set. (line 265) * differences in awk and gawk, single-character fields: Single Character Fields. (line 6) * differences in awk and gawk, split() function: String Functions. @@ -31987,7 +32027,7 @@ Index * differences in awk and gawk, strings: Scalar Constants. (line 20) * differences in awk and gawk, strings, storing: gawk split records. (line 77) -* differences in awk and gawk, SYMTAB variable: Auto-set. (line 261) +* differences in awk and gawk, SYMTAB variable: Auto-set. (line 269) * differences in awk and gawk, TEXTDOMAIN variable: User-modified. (line 152) * differences in awk and gawk, trunc-mod operation: Arithmetic Ops. @@ -32003,6 +32043,7 @@ Index * display debugger command: Viewing And Changing Data. (line 8) * display debugger options: Debugger Info. (line 57) +* div: Numeric Functions. (line 18) * division: Arithmetic Ops. (line 44) * do-while statement: Do Statement. (line 6) * do-while statement, use of regexps in: Regexp Usage. (line 19) @@ -32027,8 +32068,8 @@ Index * dynamically loaded extensions: Dynamic Extensions. (line 6) * e debugger command (alias for enable): Breakpoint Control. (line 73) * EBCDIC: Ordinal Functions. (line 45) -* effective group ID of gawk user: Auto-set. (line 133) -* effective user ID of gawk user: Auto-set. (line 137) +* effective group ID of gawk user: Auto-set. (line 141) +* effective user ID of gawk user: Auto-set. (line 145) * egrep utility <1>: Egrep Program. (line 6) * egrep utility: Bracket Expressions. (line 24) * egrep.awk program: Egrep Program. (line 54) @@ -32084,13 +32125,13 @@ Index (line 11) * EREs (Extended Regular Expressions): Bracket Expressions. (line 24) * ERRNO variable <1>: TCP/IP Networking. (line 54) -* ERRNO variable: Auto-set. (line 74) +* ERRNO variable: Auto-set. (line 82) * ERRNO variable, with BEGINFILE pattern: BEGINFILE/ENDFILE. (line 26) * ERRNO variable, with close() function: Close Files And Pipes. (line 139) * ERRNO variable, with getline command: Getline. (line 19) * error handling: Special FD. (line 16) -* error handling, ERRNO variable and: Auto-set. (line 74) +* error handling, ERRNO variable and: Auto-set. (line 82) * error output: Special FD. (line 6) * escape processing, gsub()/gensub()/sub() functions: Gory Details. (line 6) @@ -32123,10 +32164,10 @@ Index * exit status, of VMS: VMS Running. (line 29) * exit the debugger: Miscellaneous Debugger Commands. (line 99) -* exp: Numeric Functions. (line 18) +* exp: Numeric Functions. (line 33) * expand utility: Very Simple. (line 69) * Expat XML parser library: gawkextlib. (line 35) -* exponent: Numeric Functions. (line 18) +* exponent: Numeric Functions. (line 33) * expressions: Expressions. (line 6) * expressions, as patterns: Expression Patterns. (line 6) * expressions, assignment: Assignment Ops. (line 6) @@ -32144,7 +32185,7 @@ Index (line 6) * extension API version: Extension Versioning. (line 6) -* extension API, version number: Auto-set. (line 224) +* extension API, version number: Auto-set. (line 232) * extension example: Extension Example. (line 6) * extension registration: Registration Functions. (line 6) @@ -32223,7 +32264,7 @@ Index * file names, distinguishing: Auto-set. (line 56) * file names, in compatibility mode: Special Caveats. (line 9) * file names, standard streams in gawk: Special FD. (line 46) -* FILENAME variable <1>: Auto-set. (line 90) +* FILENAME variable <1>: Auto-set. (line 98) * FILENAME variable: Reading Files. (line 6) * FILENAME variable, getline, setting with: Getline Notes. (line 19) * filenames, assignments as: Ignoring Assigns. (line 6) @@ -32291,9 +32332,9 @@ Index * flush buffered output: I/O Functions. (line 28) * fnmatch() extension function: Extension Sample Fnmatch. (line 12) -* FNR variable <1>: Auto-set. (line 99) +* FNR variable <1>: Auto-set. (line 107) * FNR variable: Records. (line 6) -* FNR variable, changing: Auto-set. (line 301) +* FNR variable, changing: Auto-set. (line 309) * for statement: For Statement. (line 6) * for statement, looping over arrays: Scanning an Array. (line 20) * fork() extension function: Extension Sample Fork. @@ -32330,7 +32371,7 @@ Index * FS variable, --field-separator option and: Options. (line 21) * FS variable, as null string: Single Character Fields. (line 20) -* FS variable, as TAB character: Options. (line 266) +* FS variable, as TAB character: Options. (line 264) * FS variable, changing value of: Field Separators. (line 35) * FS variable, running awk programs and: Cut Program. (line 68) * FS variable, setting from command line: Command Line Field Separator. @@ -32343,7 +32384,7 @@ Index * FSF (Free Software Foundation): Manual History. (line 6) * fts() extension function: Extension Sample File Functions. (line 61) -* FUNCTAB array: Auto-set. (line 115) +* FUNCTAB array: Auto-set. (line 123) * function calls: Function Calls. (line 6) * function calls, indirect: Indirect Calls. (line 6) * function definition example: Function Example. (line 6) @@ -32393,7 +32434,7 @@ Index * G-d: Acknowledgments. (line 82) * Garfinkle, Scott: Contributors. (line 34) * gawk program, dynamic profiling: Profiling. (line 179) -* gawk version: Auto-set. (line 199) +* gawk version: Auto-set. (line 207) * gawk, ARGIND variable in: Other Arguments. (line 12) * gawk, awk and <1>: This Manual. (line 14) * gawk, awk and: Preface. (line 23) @@ -32414,13 +32455,13 @@ Index * gawk, distribution: Distribution contents. (line 6) * gawk, ERRNO variable in <1>: TCP/IP Networking. (line 54) -* gawk, ERRNO variable in <2>: Auto-set. (line 74) +* gawk, ERRNO variable in <2>: Auto-set. (line 82) * gawk, ERRNO variable in <3>: BEGINFILE/ENDFILE. (line 26) * gawk, ERRNO variable in <4>: Close Files And Pipes. (line 139) * gawk, ERRNO variable in: Getline. (line 19) * gawk, escape sequences: Escape Sequences. (line 124) -* gawk, extensions, disabling: Options. (line 254) +* gawk, extensions, disabling: Options. (line 252) * gawk, features, adding: Adding Code. (line 6) * gawk, features, advanced: Advanced Features. (line 6) * gawk, field separators and: User-modified. (line 71) @@ -32431,7 +32472,7 @@ Index * gawk, FPAT variable in <1>: User-modified. (line 43) * gawk, FPAT variable in: Splitting By Content. (line 27) -* gawk, FUNCTAB array in: Auto-set. (line 115) +* gawk, FUNCTAB array in: Auto-set. (line 123) * gawk, function arguments and: Calling Built-in. (line 16) * gawk, hexadecimal numbers and: Nondecimal-numbers. (line 42) * gawk, IGNORECASE variable in <1>: Array Sorting Functions. @@ -32462,7 +32503,7 @@ Index * gawk, OS/2 version of: PC Using. (line 16) * gawk, PROCINFO array in <1>: Two-way I/O. (line 117) * gawk, PROCINFO array in <2>: Time Functions. (line 47) -* gawk, PROCINFO array in: Auto-set. (line 128) +* gawk, PROCINFO array in: Auto-set. (line 136) * gawk, regexp constants and: Using Constant Regexps. (line 28) * gawk, regular expressions, case sensitivity: Case-sensitivity. @@ -32470,18 +32511,18 @@ Index * gawk, regular expressions, operators: GNU Regexp Operators. (line 6) * gawk, regular expressions, precedence: Regexp Operators. (line 162) -* gawk, RT variable in <1>: Auto-set. (line 257) +* gawk, RT variable in <1>: Auto-set. (line 265) * gawk, RT variable in <2>: Multiple Line. (line 129) * gawk, RT variable in: awk split records. (line 124) * gawk, See Also awk: Preface. (line 36) * gawk, source code, obtaining: Getting. (line 6) * gawk, splitting fields and: Constant Size. (line 88) * gawk, string-translation functions: I18N Functions. (line 6) -* gawk, SYMTAB array in: Auto-set. (line 261) +* gawk, SYMTAB array in: Auto-set. (line 269) * gawk, TEXTDOMAIN variable in: User-modified. (line 152) * gawk, timestamps: Time Functions. (line 6) * gawk, uses for: Preface. (line 36) -* gawk, versions of, information about, printing: Options. (line 300) +* gawk, versions of, information about, printing: Options. (line 298) * gawk, VMS version of: VMS Installation. (line 6) * gawk, word-boundary operator: GNU Regexp Operators. (line 63) @@ -32563,7 +32604,7 @@ Index * Grigera, Juan: Contributors. (line 57) * group database, reading: Group Functions. (line 6) * group file: Group Functions. (line 6) -* group ID of gawk user: Auto-set. (line 172) +* group ID of gawk user: Auto-set. (line 180) * groups, information about: Group Functions. (line 6) * gsub <1>: String Functions. (line 139) * gsub: Using Constant Regexps. @@ -32662,7 +32703,7 @@ Index * installation, VMS: VMS Installation. (line 6) * installing gawk: Installation. (line 6) * instruction tracing, in debugger: Debugger Info. (line 89) -* int: Numeric Functions. (line 23) +* int: Numeric Functions. (line 38) * INT signal (MS-Windows): Profiling. (line 214) * integer array indices: Numeric Array Subscripts. (line 31) @@ -32792,7 +32833,7 @@ Index * lint checking, empty programs: Command Line. (line 16) * lint checking, issuing warnings: Options. (line 185) * lint checking, POSIXLY_CORRECT environment variable: Options. - (line 340) + (line 338) * lint checking, undefined functions: Pass By Value/Reference. (line 88) * LINT variable: User-modified. (line 88) @@ -32806,14 +32847,14 @@ Index * loading, extensions: Options. (line 173) * local variables, in a function: Variable Scope. (line 6) * locale categories: Explaining gettext. (line 81) -* locale decimal point character: Options. (line 270) +* locale decimal point character: Options. (line 268) * locale, definition of: Locales. (line 6) * localization: I18N and L10N. (line 6) * localization, See internationalization, localization: I18N and L10N. (line 6) -* log: Numeric Functions. (line 30) +* log: Numeric Functions. (line 45) * log files, timestamps in: Time Functions. (line 6) -* logarithm: Numeric Functions. (line 30) +* logarithm: Numeric Functions. (line 45) * logical false/true: Truth Values. (line 6) * logical operators, See Boolean expressions: Boolean Ops. (line 6) * login information: Passwd Functions. (line 16) @@ -32854,7 +32895,7 @@ Index * mawk utility <3>: Concatenation. (line 36) * mawk utility <4>: Getline/Pipe. (line 62) * mawk utility: Escape Sequences. (line 124) -* maximum precision supported by MPFR library: Auto-set. (line 213) +* maximum precision supported by MPFR library: Auto-set. (line 221) * McIlroy, Doug: Glossary. (line 149) * McPhee, Patrick: Contributors. (line 100) * message object files: Explaining gettext. (line 42) @@ -32867,7 +32908,7 @@ Index * messages from extensions: Printing Messages. (line 6) * metacharacters in regular expressions: Regexp Operators. (line 6) * metacharacters, escape sequences for: Escape Sequences. (line 130) -* minimum precision supported by MPFR library: Auto-set. (line 216) +* minimum precision supported by MPFR library: Auto-set. (line 224) * mktime: Time Functions. (line 25) * modifiers, in format specifiers: Format Modifiers. (line 6) * monetary information, localization: Explaining gettext. (line 104) @@ -32890,7 +32931,7 @@ Index * networks, programming: TCP/IP Networking. (line 6) * networks, support for: Special Network. (line 6) * newlines <1>: Boolean Ops. (line 67) -* newlines <2>: Options. (line 260) +* newlines <2>: Options. (line 258) * newlines: Statements/Lines. (line 6) * newlines, as field separators: Default Field Splitting. (line 6) @@ -32919,7 +32960,7 @@ Index (line 47) * nexti debugger command: Debugger Execution Control. (line 49) -* NF variable <1>: Auto-set. (line 104) +* NF variable <1>: Auto-set. (line 112) * NF variable: Fields. (line 33) * NF variable, decrementing: Changing Fields. (line 107) * ni debugger command (alias for nexti): Debugger Execution Control. @@ -32928,9 +32969,9 @@ Index * non-existent array elements: Reference to Elements. (line 23) * not Boolean-logic operator: Boolean Ops. (line 6) -* NR variable <1>: Auto-set. (line 123) +* NR variable <1>: Auto-set. (line 131) * NR variable: Records. (line 6) -* NR variable, changing: Auto-set. (line 301) +* NR variable, changing: Auto-set. (line 309) * null strings <1>: Basic Data Typing. (line 26) * null strings <2>: Truth Values. (line 6) * null strings <3>: Regexp Field Splitting. @@ -33045,7 +33086,7 @@ Index * p debugger command (alias for print): Viewing And Changing Data. (line 36) * Papadopoulos, Panos: Contributors. (line 128) -* parent process ID of gawk process: Auto-set. (line 181) +* parent process ID of gawk process: Auto-set. (line 189) * parentheses (), in a profile: Profiling. (line 146) * parentheses (), regexp operator: Regexp Operators. (line 80) * password file: Passwd Functions. (line 16) @@ -33112,7 +33153,7 @@ Index * portability, NF variable, decrementing: Changing Fields. (line 115) * portability, operators: Increment Ops. (line 60) * portability, operators, not in POSIX awk: Precedence. (line 98) -* portability, POSIXLY_CORRECT environment variable: Options. (line 360) +* portability, POSIXLY_CORRECT environment variable: Options. (line 358) * portability, substr() function: String Functions. (line 510) * portable object files <1>: Translator i18n. (line 6) * portable object files: Explaining gettext. (line 37) @@ -33161,11 +33202,11 @@ Index * POSIX awk, regular expressions and: Regexp Operators. (line 162) * POSIX awk, timestamps and: Time Functions. (line 6) * POSIX awk, | I/O operator and: Getline/Pipe. (line 55) -* POSIX mode: Options. (line 254) +* POSIX mode: Options. (line 252) * POSIX, awk and: Preface. (line 23) * POSIX, gawk extensions not included in: POSIX/GNU. (line 6) * POSIX, programs, implementing in awk: Clones. (line 6) -* POSIXLY_CORRECT environment variable: Options. (line 340) +* POSIXLY_CORRECT environment variable: Options. (line 338) * PREC variable: User-modified. (line 124) * precedence <1>: Precedence. (line 6) * precedence: Increment Ops. (line 60) @@ -33208,24 +33249,24 @@ Index * printing, unduplicated lines of text: Uniq Program. (line 6) * printing, user information: Id Program. (line 6) * private variables: Library Names. (line 11) -* process group idIDof gawk process: Auto-set. (line 175) -* process ID of gawk process: Auto-set. (line 178) +* process group idIDof gawk process: Auto-set. (line 183) +* process ID of gawk process: Auto-set. (line 186) * processes, two-way communications with: Two-way I/O. (line 23) * processing data: Basic High Level. (line 6) * PROCINFO array <1>: Passwd Functions. (line 6) * PROCINFO array <2>: Time Functions. (line 47) -* PROCINFO array: Auto-set. (line 128) +* PROCINFO array: Auto-set. (line 136) * PROCINFO array, and communications via ptys: Two-way I/O. (line 117) * PROCINFO array, and group membership: Group Functions. (line 6) * PROCINFO array, and user and group ID numbers: Id Program. (line 15) * PROCINFO array, testing the field splitting: Passwd Functions. (line 161) -* PROCINFO array, uses: Auto-set. (line 234) +* PROCINFO array, uses: Auto-set. (line 242) * PROCINFO, values of sorted_in: Controlling Scanning. (line 26) * profiling awk programs: Profiling. (line 6) * profiling awk programs, dynamically: Profiling. (line 179) -* program identifiers: Auto-set. (line 146) +* program identifiers: Auto-set. (line 154) * program, definition of: Getting Started. (line 21) * programmers, attractiveness of: Two-way I/O. (line 6) * programming conventions, --non-decimal-data option: Nondecimal Data. @@ -33270,12 +33311,12 @@ Index * Rakitzis, Byron: History Sorting. (line 25) * Ramey, Chet <1>: General Data Types. (line 6) * Ramey, Chet: Acknowledgments. (line 60) -* rand: Numeric Functions. (line 34) +* rand: Numeric Functions. (line 49) * random numbers, Cliff: Cliff Random Function. (line 6) * random numbers, rand()/srand() functions: Numeric Functions. - (line 34) -* random numbers, seed of: Numeric Functions. (line 64) + (line 49) +* random numbers, seed of: Numeric Functions. (line 79) * range expressions (regexps): Bracket Expressions. (line 6) * range patterns: Ranges. (line 6) * range patterns, line continuation and: Ranges. (line 65) @@ -33345,7 +33386,7 @@ Index (line 59) * regular expressions, gawk, command-line options: GNU Regexp Operators. (line 70) -* regular expressions, interval expressions and: Options. (line 279) +* regular expressions, interval expressions and: Options. (line 277) * regular expressions, leftmost longest match: Leftmost Longest. (line 6) * regular expressions, operators <1>: Regexp Operators. (line 6) @@ -33385,7 +33426,7 @@ Index * right shift: Bitwise Functions. (line 52) * right shift, bitwise: Bitwise Functions. (line 32) * Ritchie, Dennis: Basic Data Typing. (line 54) -* RLENGTH variable: Auto-set. (line 244) +* RLENGTH variable: Auto-set. (line 252) * RLENGTH variable, match() function and: String Functions. (line 224) * Robbins, Arnold <1>: Future Extensions. (line 6) * Robbins, Arnold <2>: Bugs. (line 32) @@ -33403,7 +33444,7 @@ Index * Robbins, Miriam <2>: Getline/Pipe. (line 39) * Robbins, Miriam: Acknowledgments. (line 82) * Rommel, Kai Uwe: Contributors. (line 42) -* round to nearest integer: Numeric Functions. (line 23) +* round to nearest integer: Numeric Functions. (line 38) * round() user-defined function: Round Function. (line 16) * rounding numbers: Round Function. (line 6) * ROUNDMODE variable: User-modified. (line 128) @@ -33411,9 +33452,9 @@ Index * RS variable: awk split records. (line 12) * RS variable, multiline records and: Multiple Line. (line 17) * rshift: Bitwise Functions. (line 52) -* RSTART variable: Auto-set. (line 250) +* RSTART variable: Auto-set. (line 258) * RSTART variable, match() function and: String Functions. (line 224) -* RT variable <1>: Auto-set. (line 257) +* RT variable <1>: Auto-set. (line 265) * RT variable <2>: Multiple Line. (line 129) * RT variable: awk split records. (line 124) * Rubin, Paul <1>: Contributors. (line 15) @@ -33426,14 +33467,14 @@ Index (line 68) * sample debugging session: Sample Debugging Session. (line 6) -* sandbox mode: Options. (line 286) +* sandbox mode: Options. (line 284) * save debugger options: Debugger Info. (line 84) * scalar or array: Type Functions. (line 11) * scalar values: Basic Data Typing. (line 13) * scanning arrays: Scanning an Array. (line 6) * scanning multidimensional arrays: Multiscanning. (line 11) * Schorr, Andrew <1>: Contributors. (line 133) -* Schorr, Andrew <2>: Auto-set. (line 284) +* Schorr, Andrew <2>: Auto-set. (line 292) * Schorr, Andrew: Acknowledgments. (line 60) * Schreiber, Bert: Acknowledgments. (line 38) * Schreiber, Rita: Acknowledgments. (line 38) @@ -33453,7 +33494,7 @@ Index * sed utility <2>: Simple Sed. (line 6) * sed utility: Field Splitting Summary. (line 46) -* seeding random number generator: Numeric Functions. (line 64) +* seeding random number generator: Numeric Functions. (line 79) * semicolon (;), AWKPATH variable and: PC Using. (line 10) * semicolon (;), separating statements in actions <1>: Statements. (line 10) @@ -33518,7 +33559,7 @@ Index (line 110) * sidebar, Changing FS Does Not Affect the Fields: Field Splitting Summary. (line 38) -* sidebar, Changing NR and FNR: Auto-set. (line 299) +* sidebar, Changing NR and FNR: Auto-set. (line 307) * sidebar, Controlling Output Buffering with system(): I/O Functions. (line 138) * sidebar, Escape Sequences for Metacharacters: Escape Sequences. @@ -33555,8 +33596,8 @@ Index * SIGUSR1 signal, for dynamic profiling: Profiling. (line 188) * silent debugger command: Debugger Execution Control. (line 10) -* sin: Numeric Functions. (line 75) -* sine: Numeric Functions. (line 75) +* sin: Numeric Functions. (line 90) +* sine: Numeric Functions. (line 90) * single quote ('): One-shot. (line 15) * single quote (') in gawk command lines: Long. (line 33) * single quote ('), in shell commands: Quoting. (line 48) @@ -33606,10 +33647,10 @@ Index * sprintf() function, OFMT variable and: User-modified. (line 114) * sprintf() function, print/printf statements and: Round Function. (line 6) -* sqrt: Numeric Functions. (line 78) +* sqrt: Numeric Functions. (line 93) * square brackets ([]), regexp operator: Regexp Operators. (line 56) -* square root: Numeric Functions. (line 78) -* srand: Numeric Functions. (line 82) +* square root: Numeric Functions. (line 93) +* srand: Numeric Functions. (line 97) * stack frame: Debugging Terms. (line 10) * Stallman, Richard <1>: Glossary. (line 296) * Stallman, Richard <2>: Contributors. (line 23) @@ -33681,9 +33722,9 @@ Index * substr: String Functions. (line 479) * substring: String Functions. (line 479) * Sumner, Andrew: Other Versions. (line 64) -* supplementary groups of gawk process: Auto-set. (line 229) +* supplementary groups of gawk process: Auto-set. (line 237) * switch statement: Switch Statement. (line 6) -* SYMTAB array: Auto-set. (line 261) +* SYMTAB array: Auto-set. (line 269) * syntactic ambiguity: /= operator vs. /=.../ regexp constant: Assignment Ops. (line 148) * system: I/O Functions. (line 75) @@ -33861,10 +33902,10 @@ Index * variables, uninitialized, as array subscripts: Uninitialized Subscripts. (line 6) * variables, user-defined: Variables. (line 6) -* version of gawk: Auto-set. (line 199) -* version of gawk extension API: Auto-set. (line 224) -* version of GNU MP library: Auto-set. (line 210) -* version of GNU MPFR library: Auto-set. (line 206) +* version of gawk: Auto-set. (line 207) +* version of gawk extension API: Auto-set. (line 232) +* version of GNU MP library: Auto-set. (line 218) +* version of GNU MPFR library: Auto-set. (line 214) * vertical bar (|): Regexp Operators. (line 70) * vertical bar (|), | operator (I/O) <1>: Precedence. (line 65) * vertical bar (|), | operator (I/O): Getline/Pipe. (line 9) @@ -33898,7 +33939,7 @@ Index * whitespace, as field separators: Default Field Splitting. (line 6) * whitespace, functions, calling: Calling Built-in. (line 10) -* whitespace, newlines as: Options. (line 260) +* whitespace, newlines as: Options. (line 258) * Williams, Kent: Contributors. (line 34) * Woehlke, Matthew: Contributors. (line 79) * Woods, John: Contributors. (line 27) @@ -33992,511 +34033,511 @@ Node: Intro Summary109875 Node: Invoking Gawk110641 Node: Command Line112156 Node: Options112947 -Ref: Options-Footnote-1128776 -Node: Other Arguments128801 -Node: Naming Standard Input131463 -Node: Environment Variables132557 -Node: AWKPATH Variable133115 -Ref: AWKPATH Variable-Footnote-1135987 -Ref: AWKPATH Variable-Footnote-2136032 -Node: AWKLIBPATH Variable136292 -Node: Other Environment Variables137051 -Node: Exit Status140706 -Node: Include Files141381 -Node: Loading Shared Libraries144959 -Node: Obsolete146343 -Node: Undocumented147040 -Node: Invoking Summary147307 -Node: Regexp148887 -Node: Regexp Usage150337 -Node: Escape Sequences152370 -Node: Regexp Operators158037 -Ref: Regexp Operators-Footnote-1165517 -Ref: Regexp Operators-Footnote-2165664 -Node: Bracket Expressions165762 -Ref: table-char-classes167652 -Node: GNU Regexp Operators170592 -Node: Case-sensitivity174315 -Ref: Case-sensitivity-Footnote-1177207 -Ref: Case-sensitivity-Footnote-2177442 -Node: Leftmost Longest177550 -Node: Computed Regexps178751 -Node: Regexp Summary182123 -Node: Reading Files183594 -Node: Records185686 -Node: awk split records186429 -Node: gawk split records191287 -Ref: gawk split records-Footnote-1195808 -Node: Fields195845 -Ref: Fields-Footnote-1198809 -Node: Nonconstant Fields198895 -Ref: Nonconstant Fields-Footnote-1201125 -Node: Changing Fields201327 -Node: Field Separators207281 -Node: Default Field Splitting209983 -Node: Regexp Field Splitting211100 -Node: Single Character Fields214441 -Node: Command Line Field Separator215500 -Node: Full Line Fields218842 -Ref: Full Line Fields-Footnote-1219350 -Node: Field Splitting Summary219396 -Ref: Field Splitting Summary-Footnote-1222495 -Node: Constant Size222596 -Node: Splitting By Content227203 -Ref: Splitting By Content-Footnote-1230953 -Node: Multiple Line230993 -Ref: Multiple Line-Footnote-1236849 -Node: Getline237028 -Node: Plain Getline239244 -Node: Getline/Variable241339 -Node: Getline/File242486 -Node: Getline/Variable/File243870 -Ref: Getline/Variable/File-Footnote-1245469 -Node: Getline/Pipe245556 -Node: Getline/Variable/Pipe248255 -Node: Getline/Coprocess249362 -Node: Getline/Variable/Coprocess250614 -Node: Getline Notes251351 -Node: Getline Summary254155 -Ref: table-getline-variants254563 -Node: Read Timeout255475 -Ref: Read Timeout-Footnote-1259302 -Node: Command line directories259360 -Node: Input Summary260264 -Node: Input Exercises263401 -Node: Printing264134 -Node: Print265856 -Node: Print Examples267197 -Node: Output Separators269976 -Node: OFMT271992 -Node: Printf273350 -Node: Basic Printf274256 -Node: Control Letters275795 -Node: Format Modifiers279647 -Node: Printf Examples285674 -Node: Redirection288138 -Node: Special Files295110 -Node: Special FD295641 -Ref: Special FD-Footnote-1299265 -Node: Special Network299339 -Node: Special Caveats300189 -Node: Close Files And Pipes300985 -Ref: Close Files And Pipes-Footnote-1308146 -Ref: Close Files And Pipes-Footnote-2308294 -Node: Output Summary308444 -Node: Output exercises309441 -Node: Expressions310121 -Node: Values311306 -Node: Constants311982 -Node: Scalar Constants312662 -Ref: Scalar Constants-Footnote-1313521 -Node: Nondecimal-numbers313771 -Node: Regexp Constants316771 -Node: Using Constant Regexps317246 -Node: Variables320316 -Node: Using Variables320971 -Node: Assignment Options322695 -Node: Conversion324570 -Node: Strings And Numbers325094 -Ref: Strings And Numbers-Footnote-1328156 -Node: Locale influences conversions328265 -Ref: table-locale-affects330982 -Node: All Operators331570 -Node: Arithmetic Ops332200 -Node: Concatenation334705 -Ref: Concatenation-Footnote-1337501 -Node: Assignment Ops337621 -Ref: table-assign-ops342604 -Node: Increment Ops343921 -Node: Truth Values and Conditions347359 -Node: Truth Values348442 -Node: Typing and Comparison349491 -Node: Variable Typing350284 -Ref: Variable Typing-Footnote-1354184 -Node: Comparison Operators354306 -Ref: table-relational-ops354716 -Node: POSIX String Comparison358266 -Ref: POSIX String Comparison-Footnote-1359350 -Node: Boolean Ops359488 -Ref: Boolean Ops-Footnote-1363558 -Node: Conditional Exp363649 -Node: Function Calls365376 -Node: Precedence369256 -Node: Locales372925 -Node: Expressions Summary374556 -Node: Patterns and Actions377097 -Node: Pattern Overview378213 -Node: Regexp Patterns379890 -Node: Expression Patterns380433 -Node: Ranges384214 -Node: BEGIN/END387320 -Node: Using BEGIN/END388082 -Ref: Using BEGIN/END-Footnote-1390818 -Node: I/O And BEGIN/END390924 -Node: BEGINFILE/ENDFILE393209 -Node: Empty396140 -Node: Using Shell Variables396457 -Node: Action Overview398740 -Node: Statements401067 -Node: If Statement402915 -Node: While Statement404413 -Node: Do Statement406457 -Node: For Statement407613 -Node: Switch Statement410765 -Node: Break Statement412868 -Node: Continue Statement414923 -Node: Next Statement416716 -Node: Nextfile Statement419106 -Node: Exit Statement421761 -Node: Built-in Variables424165 -Node: User-modified425292 -Ref: User-modified-Footnote-1432981 -Node: Auto-set433043 -Ref: Auto-set-Footnote-1445625 -Ref: Auto-set-Footnote-2445830 -Node: ARGC and ARGV445886 -Node: Pattern Action Summary449740 -Node: Arrays451963 -Node: Array Basics453512 -Node: Array Intro454338 -Ref: figure-array-elements456311 -Node: Reference to Elements458718 -Node: Assigning Elements460991 -Node: Array Example461482 -Node: Scanning an Array463214 -Node: Controlling Scanning466229 -Ref: Controlling Scanning-Footnote-1471402 -Node: Delete471718 -Ref: Delete-Footnote-1474483 -Node: Numeric Array Subscripts474540 -Node: Uninitialized Subscripts476723 -Node: Multidimensional478348 -Node: Multiscanning481441 -Node: Arrays of Arrays483030 -Node: Arrays Summary487693 -Node: Functions489798 -Node: Built-in490671 -Node: Calling Built-in491749 -Node: Numeric Functions493737 -Ref: Numeric Functions-Footnote-1497571 -Ref: Numeric Functions-Footnote-2497928 -Ref: Numeric Functions-Footnote-3497976 -Node: String Functions498245 -Ref: String Functions-Footnote-1521256 -Ref: String Functions-Footnote-2521385 -Ref: String Functions-Footnote-3521633 -Node: Gory Details521720 -Ref: table-sub-escapes523389 -Ref: table-sub-posix-92524743 -Ref: table-sub-proposed526094 -Ref: table-posix-sub527448 -Ref: table-gensub-escapes528993 -Ref: Gory Details-Footnote-1530169 -Ref: Gory Details-Footnote-2530220 -Node: I/O Functions530371 -Ref: I/O Functions-Footnote-1537494 -Node: Time Functions537641 -Ref: Time Functions-Footnote-1548105 -Ref: Time Functions-Footnote-2548173 -Ref: Time Functions-Footnote-3548331 -Ref: Time Functions-Footnote-4548442 -Ref: Time Functions-Footnote-5548554 -Ref: Time Functions-Footnote-6548781 -Node: Bitwise Functions549047 -Ref: table-bitwise-ops549609 -Ref: Bitwise Functions-Footnote-1553854 -Node: Type Functions554038 -Node: I18N Functions555180 -Node: User-defined556825 -Node: Definition 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Management618165 -Node: Filetrans Function618797 -Node: Rewind Function622866 -Node: File Checking624253 -Ref: File Checking-Footnote-1625385 -Node: Empty Files625586 -Node: Ignoring Assigns627565 -Node: Getopt Function629119 -Ref: Getopt Function-Footnote-1640422 -Node: Passwd Functions640625 -Ref: Passwd Functions-Footnote-1649604 -Node: Group Functions649692 -Ref: Group Functions-Footnote-1657633 -Node: Walking Arrays657846 -Node: Library Functions Summary659449 -Node: Library exercises660837 -Node: Sample Programs662117 -Node: Running Examples662887 -Node: Clones663615 -Node: Cut Program664839 -Node: Egrep Program674707 -Ref: Egrep Program-Footnote-1682678 -Node: Id Program682788 -Node: Split Program686452 -Ref: Split Program-Footnote-1689990 -Node: Tee Program690118 -Node: Uniq Program692925 -Node: Wc Program700355 -Ref: Wc Program-Footnote-1704620 -Node: Miscellaneous Programs704712 -Node: Dupword Program705925 -Node: Alarm Program707956 -Node: Translate Program712770 -Ref: Translate Program-Footnote-1717161 -Ref: Translate Program-Footnote-2717431 -Node: Labels Program717565 -Ref: Labels Program-Footnote-1720936 -Node: Word Sorting721020 -Node: History Sorting725063 -Node: Extract Program726899 -Node: Simple Sed734435 -Node: Igawk Program737497 -Ref: Igawk Program-Footnote-1751808 -Ref: Igawk Program-Footnote-2752009 -Node: Anagram Program752147 -Node: Signature Program755215 -Node: Programs Summary756462 -Node: Programs Exercises757677 -Node: Advanced Features761328 -Node: Nondecimal Data763276 -Node: Array Sorting764853 -Node: Controlling Array Traversal765550 -Node: Array Sorting Functions773830 -Ref: Array Sorting Functions-Footnote-1777737 -Node: Two-way I/O777931 -Ref: Two-way I/O-Footnote-1783447 -Node: TCP/IP Networking783529 -Node: Profiling786373 -Node: Advanced Features Summary793915 -Node: Internationalization795779 -Node: I18N and L10N797259 -Node: Explaining gettext797945 -Ref: Explaining gettext-Footnote-1803085 -Ref: Explaining 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Arithmetic861507 -Node: Computer Arithmetic862836 -Ref: Computer Arithmetic-Footnote-1867223 -Node: Math Definitions867280 -Ref: table-ieee-formats870164 -Node: MPFR features870668 -Node: FP Math Caution872310 -Ref: FP Math Caution-Footnote-1873351 -Node: Inexactness of computations873720 -Node: Inexact representation874668 -Node: Comparing FP Values876023 -Node: Errors accumulate876987 -Node: Getting Accuracy878420 -Node: Try To Round881079 -Node: Setting precision881978 -Ref: table-predefined-precision-strings882660 -Node: Setting the rounding mode884453 -Ref: table-gawk-rounding-modes884817 -Ref: Setting the rounding mode-Footnote-1888271 -Node: Arbitrary Precision Integers888450 -Ref: Arbitrary Precision Integers-Footnote-1891453 -Node: POSIX Floating Point Problems891602 -Ref: POSIX Floating Point Problems-Footnote-1895478 -Node: Floating point summary895516 -Node: Dynamic Extensions897733 -Node: Extension Intro899285 -Node: Plugin License900550 -Node: Extension Mechanism 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Additional Configuration Options1087473 -Node: Configuration Philosophy1089211 -Node: Non-Unix Installation1091562 -Node: PC Installation1092020 -Node: PC Binary Installation1093331 -Node: PC Compiling1095179 -Ref: PC Compiling-Footnote-11098178 -Node: PC Testing1098283 -Node: PC Using1099459 -Node: Cygwin1103617 -Node: MSYS1104426 -Node: VMS Installation1104940 -Node: VMS Compilation1105736 -Ref: VMS Compilation-Footnote-11106958 -Node: VMS Dynamic Extensions1107016 -Node: VMS Installation Details1108389 -Node: VMS Running1110641 -Node: VMS GNV1113475 -Node: VMS Old Gawk1114198 -Node: Bugs1114668 -Node: Other Versions1118672 -Node: Installation summary1124927 -Node: Notes1125983 -Node: Compatibility Mode1126848 -Node: Additions1127630 -Node: Accessing The Source1128555 -Node: Adding Code1129991 -Node: New Ports1136169 -Node: Derived Files1140650 -Ref: Derived Files-Footnote-11145731 -Ref: Derived Files-Footnote-21145765 -Ref: Derived Files-Footnote-31146361 -Node: Future Extensions1146475 -Node: Implementation Limitations1147081 -Node: Extension Design1148329 -Node: Old Extension Problems1149483 -Ref: Old Extension Problems-Footnote-11151000 -Node: Extension New Mechanism Goals1151057 -Ref: Extension New Mechanism Goals-Footnote-11154417 -Node: Extension Other Design Decisions1154606 -Node: Extension Future Growth1156712 -Node: Old Extension Mechanism1157548 -Node: Notes summary1159310 -Node: Basic Concepts1160496 -Node: Basic High Level1161177 -Ref: figure-general-flow1161449 -Ref: figure-process-flow1162048 -Ref: Basic High Level-Footnote-11165277 -Node: Basic Data Typing1165462 -Node: Glossary1168790 -Node: Copying1193942 -Node: GNU Free Documentation License1231498 -Node: Index1256634 +Ref: Options-Footnote-1128647 +Node: Other Arguments128672 +Node: Naming Standard Input131334 +Node: Environment Variables132428 +Node: AWKPATH Variable132986 +Ref: AWKPATH Variable-Footnote-1135858 +Ref: AWKPATH Variable-Footnote-2135903 +Node: AWKLIBPATH Variable136163 +Node: Other Environment Variables136922 +Node: Exit Status140372 +Node: Include Files141047 +Node: Loading Shared Libraries144625 +Node: Obsolete146009 +Node: Undocumented146706 +Node: Invoking Summary146973 +Node: Regexp148553 +Node: Regexp Usage150003 +Node: Escape Sequences152036 +Node: Regexp Operators157703 +Ref: Regexp Operators-Footnote-1165183 +Ref: Regexp Operators-Footnote-2165330 +Node: Bracket Expressions165428 +Ref: table-char-classes167318 +Node: GNU Regexp Operators170258 +Node: Case-sensitivity173981 +Ref: Case-sensitivity-Footnote-1176873 +Ref: Case-sensitivity-Footnote-2177108 +Node: Leftmost Longest177216 +Node: Computed Regexps178417 +Node: Regexp Summary181789 +Node: Reading Files183260 +Node: Records185352 +Node: awk split records186095 +Node: gawk split records190953 +Ref: gawk split records-Footnote-1195474 +Node: Fields195511 +Ref: Fields-Footnote-1198475 +Node: Nonconstant Fields198561 +Ref: Nonconstant Fields-Footnote-1200791 +Node: Changing Fields200993 +Node: Field Separators206947 +Node: Default Field Splitting209649 +Node: Regexp Field Splitting210766 +Node: Single Character Fields214107 +Node: Command Line Field Separator215166 +Node: Full Line Fields218508 +Ref: Full Line Fields-Footnote-1219016 +Node: Field Splitting Summary219062 +Ref: Field Splitting Summary-Footnote-1222161 +Node: Constant Size222262 +Node: Splitting By Content226869 +Ref: Splitting By Content-Footnote-1230619 +Node: Multiple Line230659 +Ref: Multiple Line-Footnote-1236515 +Node: Getline236694 +Node: Plain Getline238910 +Node: Getline/Variable241005 +Node: Getline/File242152 +Node: Getline/Variable/File243536 +Ref: Getline/Variable/File-Footnote-1245135 +Node: Getline/Pipe245222 +Node: Getline/Variable/Pipe247921 +Node: Getline/Coprocess249028 +Node: Getline/Variable/Coprocess250280 +Node: Getline Notes251017 +Node: Getline Summary253821 +Ref: table-getline-variants254229 +Node: Read Timeout255141 +Ref: Read Timeout-Footnote-1258968 +Node: Command line directories259026 +Node: Input Summary259930 +Node: Input Exercises263067 +Node: Printing263800 +Node: Print265522 +Node: Print Examples266863 +Node: Output Separators269642 +Node: OFMT271658 +Node: Printf273016 +Node: Basic Printf273922 +Node: Control Letters275461 +Node: Format Modifiers279313 +Node: Printf Examples285340 +Node: Redirection287804 +Node: Special Files294776 +Node: Special FD295307 +Ref: Special FD-Footnote-1298931 +Node: Special Network299005 +Node: Special Caveats299855 +Node: Close Files And Pipes300651 +Ref: Close Files And Pipes-Footnote-1307812 +Ref: Close Files And Pipes-Footnote-2307960 +Node: Output Summary308110 +Node: Output exercises309107 +Node: Expressions309787 +Node: Values310972 +Node: Constants311648 +Node: Scalar Constants312328 +Ref: Scalar Constants-Footnote-1313187 +Node: Nondecimal-numbers313437 +Node: Regexp Constants316437 +Node: Using Constant Regexps316912 +Node: Variables319982 +Node: Using Variables320637 +Node: Assignment Options322361 +Node: Conversion324236 +Node: Strings And Numbers324760 +Ref: Strings And Numbers-Footnote-1327822 +Node: Locale influences conversions327931 +Ref: table-locale-affects330648 +Node: All Operators331236 +Node: Arithmetic Ops331866 +Node: Concatenation334371 +Ref: Concatenation-Footnote-1337167 +Node: Assignment Ops337287 +Ref: table-assign-ops342270 +Node: Increment Ops343587 +Node: Truth Values and Conditions347025 +Node: Truth Values348108 +Node: Typing and Comparison349157 +Node: Variable Typing349950 +Ref: Variable Typing-Footnote-1353850 +Node: Comparison Operators353972 +Ref: table-relational-ops354382 +Node: POSIX String Comparison357932 +Ref: POSIX String Comparison-Footnote-1359016 +Node: Boolean Ops359154 +Ref: Boolean Ops-Footnote-1363224 +Node: Conditional Exp363315 +Node: Function Calls365042 +Node: Precedence368922 +Node: Locales372591 +Node: Expressions Summary374222 +Node: Patterns and Actions376763 +Node: Pattern Overview377879 +Node: Regexp Patterns379556 +Node: Expression Patterns380099 +Node: Ranges383880 +Node: BEGIN/END386986 +Node: Using BEGIN/END387748 +Ref: Using BEGIN/END-Footnote-1390484 +Node: I/O And BEGIN/END390590 +Node: BEGINFILE/ENDFILE392875 +Node: Empty395806 +Node: Using Shell Variables396123 +Node: Action Overview398406 +Node: Statements400733 +Node: If Statement402581 +Node: While Statement404079 +Node: Do Statement406123 +Node: For Statement407279 +Node: Switch Statement410431 +Node: Break Statement412534 +Node: Continue Statement414589 +Node: Next Statement416382 +Node: Nextfile Statement418772 +Node: Exit Statement421427 +Node: Built-in Variables423831 +Node: User-modified424958 +Ref: User-modified-Footnote-1432647 +Node: Auto-set432709 +Ref: Auto-set-Footnote-1445628 +Ref: Auto-set-Footnote-2445833 +Node: ARGC and ARGV445889 +Node: Pattern Action Summary449743 +Node: Arrays451966 +Node: Array Basics453515 +Node: Array Intro454341 +Ref: figure-array-elements456314 +Node: Reference to Elements458721 +Node: Assigning Elements460994 +Node: Array Example461485 +Node: Scanning an Array463217 +Node: Controlling Scanning466232 +Ref: Controlling Scanning-Footnote-1471405 +Node: Delete471721 +Ref: Delete-Footnote-1474486 +Node: Numeric Array Subscripts474543 +Node: Uninitialized Subscripts476726 +Node: Multidimensional478351 +Node: Multiscanning481444 +Node: Arrays of Arrays483033 +Node: Arrays Summary487696 +Node: Functions489801 +Node: Built-in490674 +Node: Calling Built-in491752 +Node: Numeric Functions493740 +Ref: Numeric Functions-Footnote-1498376 +Ref: Numeric Functions-Footnote-2498733 +Ref: Numeric Functions-Footnote-3498781 +Node: String Functions499050 +Ref: String Functions-Footnote-1522061 +Ref: String Functions-Footnote-2522190 +Ref: String Functions-Footnote-3522438 +Node: Gory Details522525 +Ref: table-sub-escapes524194 +Ref: table-sub-posix-92525548 +Ref: table-sub-proposed526899 +Ref: table-posix-sub528253 +Ref: table-gensub-escapes529798 +Ref: Gory Details-Footnote-1530974 +Ref: Gory Details-Footnote-2531025 +Node: I/O Functions531176 +Ref: I/O Functions-Footnote-1538299 +Node: Time Functions538446 +Ref: Time Functions-Footnote-1548910 +Ref: Time Functions-Footnote-2548978 +Ref: Time Functions-Footnote-3549136 +Ref: Time Functions-Footnote-4549247 +Ref: Time Functions-Footnote-5549359 +Ref: Time Functions-Footnote-6549586 +Node: Bitwise Functions549852 +Ref: table-bitwise-ops550414 +Ref: Bitwise Functions-Footnote-1554659 +Node: Type Functions554843 +Node: I18N Functions555985 +Node: User-defined557630 +Node: Definition Syntax558434 +Ref: Definition Syntax-Footnote-1563613 +Node: Function Example563682 +Ref: Function Example-Footnote-1566326 +Node: Function Caveats566348 +Node: Calling A Function566866 +Node: Variable Scope567821 +Node: Pass By Value/Reference570809 +Node: Return Statement574317 +Node: Dynamic Typing577301 +Node: Indirect Calls578230 +Node: Functions Summary587943 +Node: Library Functions590482 +Ref: Library Functions-Footnote-1594100 +Ref: Library Functions-Footnote-2594243 +Node: Library Names594414 +Ref: Library Names-Footnote-1597887 +Ref: Library Names-Footnote-2598107 +Node: General Functions598193 +Node: Strtonum Function599221 +Node: Assert Function602001 +Node: Round Function605327 +Node: Cliff Random Function606868 +Node: Ordinal Functions607884 +Ref: Ordinal Functions-Footnote-1610961 +Ref: Ordinal Functions-Footnote-2611213 +Node: Join Function611424 +Ref: Join Function-Footnote-1613195 +Node: Getlocaltime Function613395 +Node: Readfile Function617131 +Node: Data File Management618970 +Node: Filetrans Function619602 +Node: Rewind Function623671 +Node: File Checking625058 +Ref: File Checking-Footnote-1626190 +Node: Empty Files626391 +Node: Ignoring Assigns628370 +Node: Getopt Function629924 +Ref: Getopt Function-Footnote-1641227 +Node: Passwd Functions641430 +Ref: Passwd Functions-Footnote-1650409 +Node: Group Functions650497 +Ref: Group Functions-Footnote-1658438 +Node: Walking Arrays658651 +Node: Library Functions Summary660254 +Node: Library exercises661642 +Node: Sample Programs662922 +Node: Running Examples663692 +Node: Clones664420 +Node: Cut Program665644 +Node: Egrep Program675512 +Ref: Egrep Program-Footnote-1683483 +Node: Id Program683593 +Node: Split Program687257 +Ref: Split Program-Footnote-1690795 +Node: Tee Program690923 +Node: Uniq Program693730 +Node: Wc Program701160 +Ref: Wc Program-Footnote-1705425 +Node: Miscellaneous Programs705517 +Node: Dupword Program706730 +Node: Alarm Program708761 +Node: Translate Program713575 +Ref: Translate Program-Footnote-1717966 +Ref: Translate Program-Footnote-2718236 +Node: Labels Program718370 +Ref: Labels Program-Footnote-1721741 +Node: Word Sorting721825 +Node: History Sorting725868 +Node: Extract Program727704 +Node: Simple Sed735240 +Node: Igawk Program738302 +Ref: Igawk Program-Footnote-1752613 +Ref: Igawk Program-Footnote-2752814 +Node: Anagram Program752952 +Node: Signature Program756020 +Node: Programs Summary757267 +Node: Programs Exercises758482 +Node: Advanced Features762133 +Node: Nondecimal Data764081 +Node: Array Sorting765658 +Node: Controlling Array Traversal766355 +Node: Array Sorting Functions774635 +Ref: Array Sorting Functions-Footnote-1778542 +Node: Two-way I/O778736 +Ref: Two-way I/O-Footnote-1784252 +Node: TCP/IP Networking784334 +Node: Profiling787178 +Node: Advanced Features Summary794729 +Node: Internationalization796593 +Node: I18N and L10N798073 +Node: Explaining gettext798759 +Ref: Explaining gettext-Footnote-1803899 +Ref: Explaining gettext-Footnote-2804083 +Node: Programmer i18n804248 +Node: Translator i18n808473 +Node: String Extraction809267 +Ref: String Extraction-Footnote-1810228 +Node: Printf Ordering810314 +Ref: Printf Ordering-Footnote-1813096 +Node: I18N Portability813160 +Ref: I18N Portability-Footnote-1815609 +Node: I18N Example815672 +Ref: I18N Example-Footnote-1818394 +Node: Gawk I18N818466 +Node: I18N Summary819104 +Node: Debugger820443 +Node: Debugging821465 +Node: Debugging Concepts821906 +Node: Debugging Terms823762 +Node: Awk Debugging826359 +Node: Sample Debugging Session827251 +Node: Debugger Invocation827771 +Node: Finding The Bug829104 +Node: List of Debugger Commands835586 +Node: Breakpoint Control836918 +Node: Debugger Execution Control840582 +Node: Viewing And Changing Data843942 +Node: Execution Stack847300 +Node: Debugger Info848813 +Node: Miscellaneous Debugger Commands852807 +Node: Readline Support857991 +Node: Limitations858883 +Node: Debugging Summary861157 +Node: Arbitrary Precision Arithmetic862321 +Node: Computer Arithmetic863650 +Ref: Computer Arithmetic-Footnote-1868037 +Node: Math Definitions868094 +Ref: table-ieee-formats870978 +Node: MPFR features871482 +Node: FP Math Caution873124 +Ref: FP Math Caution-Footnote-1874165 +Node: Inexactness of computations874534 +Node: Inexact representation875482 +Node: Comparing FP Values876837 +Node: Errors accumulate877801 +Node: Getting Accuracy879234 +Node: Try To Round881893 +Node: Setting precision882792 +Ref: table-predefined-precision-strings883474 +Node: Setting the rounding mode885267 +Ref: table-gawk-rounding-modes885631 +Ref: Setting the rounding mode-Footnote-1889085 +Node: Arbitrary Precision Integers889264 +Ref: Arbitrary Precision Integers-Footnote-1893059 +Node: POSIX Floating Point Problems893208 +Ref: POSIX Floating Point Problems-Footnote-1897084 +Node: Floating point summary897122 +Node: Dynamic Extensions899339 +Node: Extension Intro900891 +Node: Plugin License902156 +Node: Extension Mechanism Outline902841 +Ref: figure-load-extension903265 +Ref: figure-load-new-function904750 +Ref: figure-call-new-function905752 +Node: Extension API Description907736 +Node: Extension API Functions Introduction909186 +Node: General Data Types914051 +Ref: General Data Types-Footnote-1919744 +Node: Requesting Values920043 +Ref: table-value-types-returned920780 +Node: Memory Allocation Functions921738 +Ref: Memory Allocation Functions-Footnote-1924485 +Node: Constructor Functions924581 +Node: Registration Functions926339 +Node: Extension Functions927024 +Node: Exit Callback Functions929326 +Node: Extension Version String930575 +Node: Input Parsers931225 +Node: Output Wrappers941028 +Node: Two-way processors945544 +Node: Printing Messages947748 +Ref: Printing Messages-Footnote-1948825 +Node: Updating `ERRNO'948977 +Node: Accessing Parameters949716 +Node: Symbol Table Access950946 +Node: Symbol table by name951460 +Node: Symbol table by cookie953436 +Ref: Symbol table by cookie-Footnote-1957569 +Node: Cached values957632 +Ref: Cached values-Footnote-1961136 +Node: Array Manipulation961227 +Ref: Array Manipulation-Footnote-1962325 +Node: Array Data Types962364 +Ref: Array Data Types-Footnote-1965067 +Node: Array Functions965159 +Node: Flattening Arrays969033 +Node: Creating Arrays975885 +Node: Extension API Variables980616 +Node: Extension Versioning981252 +Node: Extension API Informational Variables983153 +Node: Extension API Boilerplate984239 +Node: Finding Extensions988043 +Node: Extension Example988603 +Node: Internal File Description989333 +Node: Internal File Ops993424 +Ref: Internal File Ops-Footnote-11004856 +Node: Using Internal File Ops1004996 +Ref: Using Internal File Ops-Footnote-11007343 +Node: Extension Samples1007611 +Node: Extension Sample File Functions1009135 +Node: Extension Sample Fnmatch1016703 +Node: Extension Sample Fork1018185 +Node: Extension Sample Inplace1019398 +Node: Extension Sample Ord1021073 +Node: Extension Sample Readdir1021909 +Ref: table-readdir-file-types1022765 +Node: Extension Sample Revout1023564 +Node: Extension Sample Rev2way1024155 +Node: Extension Sample Read write array1024896 +Node: Extension Sample Readfile1026775 +Node: Extension Sample API Tests1027875 +Node: Extension Sample Time1028400 +Node: gawkextlib1029715 +Node: Extension summary1032528 +Node: Extension Exercises1036221 +Node: Language History1036943 +Node: V7/SVR3.11038586 +Node: SVR41040906 +Node: POSIX1042348 +Node: BTL1043734 +Node: POSIX/GNU1044468 +Node: Feature History1050067 +Node: Common Extensions1063197 +Node: Ranges and Locales1064509 +Ref: Ranges and Locales-Footnote-11069126 +Ref: Ranges and Locales-Footnote-21069153 +Ref: Ranges and Locales-Footnote-31069387 +Node: Contributors1069608 +Node: History summary1075033 +Node: Installation1076402 +Node: Gawk Distribution1077353 +Node: Getting1077837 +Node: Extracting1078661 +Node: Distribution contents1080303 +Node: Unix Installation1086073 +Node: Quick Installation1086690 +Node: Additional Configuration Options1089132 +Node: Configuration Philosophy1090870 +Node: Non-Unix Installation1093221 +Node: PC Installation1093679 +Node: PC Binary Installation1094990 +Node: PC Compiling1096838 +Ref: PC Compiling-Footnote-11099837 +Node: PC Testing1099942 +Node: PC Using1101118 +Node: Cygwin1105276 +Node: MSYS1106085 +Node: VMS Installation1106599 +Node: VMS Compilation1107395 +Ref: VMS Compilation-Footnote-11108617 +Node: VMS Dynamic Extensions1108675 +Node: VMS Installation Details1110048 +Node: VMS Running1112300 +Node: VMS GNV1115134 +Node: VMS Old Gawk1115857 +Node: Bugs1116327 +Node: Other Versions1120331 +Node: Installation summary1126586 +Node: Notes1127642 +Node: Compatibility Mode1128507 +Node: Additions1129289 +Node: Accessing The Source1130214 +Node: Adding Code1131650 +Node: New Ports1137828 +Node: Derived Files1142309 +Ref: Derived Files-Footnote-11147390 +Ref: Derived Files-Footnote-21147424 +Ref: Derived Files-Footnote-31148020 +Node: Future Extensions1148134 +Node: Implementation Limitations1148740 +Node: Extension Design1149988 +Node: Old Extension Problems1151142 +Ref: Old Extension Problems-Footnote-11152659 +Node: Extension New Mechanism Goals1152716 +Ref: Extension New Mechanism Goals-Footnote-11156076 +Node: Extension Other Design Decisions1156265 +Node: Extension Future Growth1158371 +Node: Old Extension Mechanism1159207 +Node: Notes summary1160969 +Node: Basic Concepts1162155 +Node: Basic High Level1162836 +Ref: figure-general-flow1163108 +Ref: figure-process-flow1163707 +Ref: Basic High Level-Footnote-11166936 +Node: Basic Data Typing1167121 +Node: Glossary1170449 +Node: Copying1195601 +Node: GNU Free Documentation License1233157 +Node: Index1258293 End Tag Table diff --git a/doc/gawk.texi b/doc/gawk.texi index c6520ba3..1fb343de 100644 --- a/doc/gawk.texi +++ b/doc/gawk.texi @@ -51,7 +51,7 @@ @c applies to and all the info about who's publishing this edition @c These apply across the board. -@set UPDATE-MONTH June, 2014 +@set UPDATE-MONTH July, 2014 @set VERSION 4.1 @set PATCHLEVEL 1 @@ -3858,10 +3858,8 @@ No space is allowed between the @option{-o} and @var{file}, if @var{file} is supplied. @quotation NOTE -Due to the way @command{gawk} has evolved, with this option -your program is still executed. This will change in the -next major release such that @command{gawk} will only -pretty-print the program and not run it. +In the past, this option would also execute your program. +This is no longer the case. @end quotation @item @option{-O} @@ -4347,11 +4345,6 @@ two regexp matchers that @command{gawk} uses internally. (There aren't supposed to be differences, but occasionally theory and practice don't coordinate with each other.) -@item GAWK_NO_PP_RUN -If this variable exists, then when invoked with the @option{--pretty-print} -option, @command{gawk} skips running the program. This variable will -not survive into the next major release. - @item GAWK_STACKSIZE This specifies the amount by which @command{gawk} should grow its internal evaluation stack, when needed. @@ -14524,10 +14517,18 @@ next file is opened. An associative array containing the values of the environment. The array indices are the environment variable names; the elements are the values of the particular environment variables. For example, -@code{ENVIRON["HOME"]} might be @code{"/home/arnold"}. Changing this array -does not affect the environment passed on to any programs that -@command{awk} may spawn via redirection or the @code{system()} function. -(In a future version of @command{gawk}, it may do so.) +@code{ENVIRON["HOME"]} might be @code{/home/arnold}. + +For POSIX @command{awk}, changing this array does not affect the +environment passed on to any programs that @command{awk} may spawn via +redirection or the @code{system()} function. + +However, beginning with version 4.2, if not in POSIX +compatibility mode, @command{gawk} does update its own environment when +@code{ENVIRON} is changed, thus changing the environment seen by programs +that it creates. You should therefore be especially careful if you +modify @code{ENVIRON["PATH"]"}, which is the search path for finding +executable programs. Some operating systems may not have environment variables. On such systems, the @code{ENVIRON} array is empty (except for @@ -16613,6 +16614,23 @@ You can use @samp{pi = atan2(0, -1)} to retrieve the value of @cindex cosine Return the cosine of @var{x}, with @var{x} in radians. +@item @code{div(@var{numerator}, @var{denominator}, @var{result})} +@cindexawkfunc{div} +@cindex div +Perform integer division, similar to the standard C function of the +same name. First, truncate @code{numerator} and @code{denominator} +towards zero, creating integer values. Clear the @code{result} +array, and then set @code{result["quotient"]} to the result of +@samp{numerator / denominator}, truncated towards zero to an integer, +and set @code{result["remainder"]} to the result of @samp{numerator % +denominator}, truncated towards zero to an integer. This function is +primarily intended for use with arbitrary length integers; it avoids +creating MPFR arbitrary precision floating-point values (@pxref{Arbitrary +Precision Integers}). + +This function is a @code{gawk} extension. It is not available in +compatibility mode (@pxref{Options}). + @item @code{exp(@var{x})} @cindexawkfunc{exp} @cindex exponent @@ -27522,8 +27540,8 @@ When called this way, @command{gawk} ``pretty prints'' the program into @file{awkprof.out}, without any execution counts. @quotation NOTE -The @option{--pretty-print} option still runs your program. -This will change in the next major release. +Once upon a time, the @option{--pretty-print} option would also run +your program. This is is no longer the case. @end quotation @c ENDOFRANGE awkp @c ENDOFRANGE proawk @@ -30522,6 +30540,32 @@ to just use the following: gawk -M 'BEGIN @{ n = 13; print n % 2 @}' @end example +When dividing two arbitrary precision integers with either +@samp{/} or @samp{%}, the result is typically an arbitrary +precision floating point value (unless the denominator evenly +divides into the numerator). In order to do integer division +or remainder with arbitrary precision integers, use the built-in +@code{div()} function (@pxref{Numeric Functions}). + +You can simulate the @code{div()} function in standard @command{awk} +using this user-defined function: + +@example +# div --- do integer division + +function div(numerator, denominator, result, i) +@{ + split("", result) + + numerator = int(numerator) + denominator = int(denominator) + result["quotient"] = int(numerator / denominator) + result["remainder"] = int(numerator % denominator) + + return 0.0 +@} +@end example + @node POSIX Floating Point Problems @section Standards Versus Existing Practice @@ -36615,6 +36659,8 @@ The generated Info file for The @command{troff} source for a manual page describing the @command{igawk} program presented in @ref{Igawk Program}. +(Since @command{gawk} can do its own @code{@@include} processing, +neither @command{igawk} nor @file{igawk.1} are installed.) @item doc/Makefile.in The input file used during the configuration process to generate the @@ -36659,8 +36705,6 @@ source file for this @value{DOCUMENT}. It also contains a @file{Makefile.in} fil @file{Makefile.am} is used by GNU Automake to create @file{Makefile.in}. The library functions from @ref{Library Functions}, -and the @command{igawk} program from -@ref{Igawk Program}, are included as ready-to-use files in the @command{gawk} distribution. They are installed as part of the installation process. The rest of the programs in this @value{DOCUMENT} are available in appropriate @@ -37706,9 +37750,10 @@ mail at the Internet address noted previously. If you find bugs in one of the non-Unix ports of @command{gawk}, please send an electronic mail message to the person who maintains that port. They -are named in the following list, as well as in the @file{README} file in the @command{gawk} -distribution. Information in the @file{README} file should be considered -authoritative if it conflicts with this @value{DOCUMENT}. +are named in the following list, as well as in the @file{README} file +in the @command{gawk} distribution. Information in the @file{README} +file should be considered authoritative if it conflicts with this +@value{DOCUMENT}. The people maintaining the non-Unix ports of @command{gawk} are as follows: @@ -37736,7 +37781,8 @@ John Malmberg, @EMAIL{wb8tyw@@qsl.net,wb8tyw at qsl.net}. @end multitable If your bug is also reproducible under Unix, please send a copy of your -report to the @EMAIL{bug-gawk@@gnu.org,bug-gawk at gnu dot org} email list as well. +report to the @EMAIL{bug-gawk@@gnu.org,bug-gawk at gnu dot org} email +list as well. @c ENDOFRANGE dbugg @c ENDOFRANGE tblgawb diff --git a/doc/gawktexi.in b/doc/gawktexi.in index d485a50d..93139a04 100644 --- a/doc/gawktexi.in +++ b/doc/gawktexi.in @@ -46,7 +46,7 @@ @c applies to and all the info about who's publishing this edition @c These apply across the board. -@set UPDATE-MONTH June, 2014 +@set UPDATE-MONTH July, 2014 @set VERSION 4.1 @set PATCHLEVEL 1 @@ -3786,10 +3786,8 @@ No space is allowed between the @option{-o} and @var{file}, if @var{file} is supplied. @quotation NOTE -Due to the way @command{gawk} has evolved, with this option -your program is still executed. This will change in the -next major release such that @command{gawk} will only -pretty-print the program and not run it. +In the past, this option would also execute your program. +This is no longer the case. @end quotation @item @option{-O} @@ -4275,11 +4273,6 @@ two regexp matchers that @command{gawk} uses internally. (There aren't supposed to be differences, but occasionally theory and practice don't coordinate with each other.) -@item GAWK_NO_PP_RUN -If this variable exists, then when invoked with the @option{--pretty-print} -option, @command{gawk} skips running the program. This variable will -not survive into the next major release. - @item GAWK_STACKSIZE This specifies the amount by which @command{gawk} should grow its internal evaluation stack, when needed. @@ -13875,10 +13868,18 @@ next file is opened. An associative array containing the values of the environment. The array indices are the environment variable names; the elements are the values of the particular environment variables. For example, -@code{ENVIRON["HOME"]} might be @code{"/home/arnold"}. Changing this array -does not affect the environment passed on to any programs that -@command{awk} may spawn via redirection or the @code{system()} function. -(In a future version of @command{gawk}, it may do so.) +@code{ENVIRON["HOME"]} might be @code{/home/arnold}. + +For POSIX @command{awk}, changing this array does not affect the +environment passed on to any programs that @command{awk} may spawn via +redirection or the @code{system()} function. + +However, beginning with version 4.2, if not in POSIX +compatibility mode, @command{gawk} does update its own environment when +@code{ENVIRON} is changed, thus changing the environment seen by programs +that it creates. You should therefore be especially careful if you +modify @code{ENVIRON["PATH"]"}, which is the search path for finding +executable programs. Some operating systems may not have environment variables. On such systems, the @code{ENVIRON} array is empty (except for @@ -15918,6 +15919,23 @@ You can use @samp{pi = atan2(0, -1)} to retrieve the value of @cindex cosine Return the cosine of @var{x}, with @var{x} in radians. +@item @code{div(@var{numerator}, @var{denominator}, @var{result})} +@cindexawkfunc{div} +@cindex div +Perform integer division, similar to the standard C function of the +same name. First, truncate @code{numerator} and @code{denominator} +towards zero, creating integer values. Clear the @code{result} +array, and then set @code{result["quotient"]} to the result of +@samp{numerator / denominator}, truncated towards zero to an integer, +and set @code{result["remainder"]} to the result of @samp{numerator % +denominator}, truncated towards zero to an integer. This function is +primarily intended for use with arbitrary length integers; it avoids +creating MPFR arbitrary precision floating-point values (@pxref{Arbitrary +Precision Integers}). + +This function is a @code{gawk} extension. It is not available in +compatibility mode (@pxref{Options}). + @item @code{exp(@var{x})} @cindexawkfunc{exp} @cindex exponent @@ -26637,8 +26655,8 @@ When called this way, @command{gawk} ``pretty prints'' the program into @file{awkprof.out}, without any execution counts. @quotation NOTE -The @option{--pretty-print} option still runs your program. -This will change in the next major release. +Once upon a time, the @option{--pretty-print} option would also run +your program. This is is no longer the case. @end quotation @c ENDOFRANGE awkp @c ENDOFRANGE proawk @@ -29637,6 +29655,32 @@ to just use the following: gawk -M 'BEGIN @{ n = 13; print n % 2 @}' @end example +When dividing two arbitrary precision integers with either +@samp{/} or @samp{%}, the result is typically an arbitrary +precision floating point value (unless the denominator evenly +divides into the numerator). In order to do integer division +or remainder with arbitrary precision integers, use the built-in +@code{div()} function (@pxref{Numeric Functions}). + +You can simulate the @code{div()} function in standard @command{awk} +using this user-defined function: + +@example +# div --- do integer division + +function div(numerator, denominator, result, i) +@{ + split("", result) + + numerator = int(numerator) + denominator = int(denominator) + result["quotient"] = int(numerator / denominator) + result["remainder"] = int(numerator % denominator) + + return 0.0 +@} +@end example + @node POSIX Floating Point Problems @section Standards Versus Existing Practice @@ -35730,6 +35774,8 @@ The generated Info file for The @command{troff} source for a manual page describing the @command{igawk} program presented in @ref{Igawk Program}. +(Since @command{gawk} can do its own @code{@@include} processing, +neither @command{igawk} nor @file{igawk.1} are installed.) @item doc/Makefile.in The input file used during the configuration process to generate the @@ -35774,8 +35820,6 @@ source file for this @value{DOCUMENT}. It also contains a @file{Makefile.in} fil @file{Makefile.am} is used by GNU Automake to create @file{Makefile.in}. The library functions from @ref{Library Functions}, -and the @command{igawk} program from -@ref{Igawk Program}, are included as ready-to-use files in the @command{gawk} distribution. They are installed as part of the installation process. The rest of the programs in this @value{DOCUMENT} are available in appropriate @@ -36821,9 +36865,10 @@ mail at the Internet address noted previously. If you find bugs in one of the non-Unix ports of @command{gawk}, please send an electronic mail message to the person who maintains that port. They -are named in the following list, as well as in the @file{README} file in the @command{gawk} -distribution. Information in the @file{README} file should be considered -authoritative if it conflicts with this @value{DOCUMENT}. +are named in the following list, as well as in the @file{README} file +in the @command{gawk} distribution. Information in the @file{README} +file should be considered authoritative if it conflicts with this +@value{DOCUMENT}. The people maintaining the non-Unix ports of @command{gawk} are as follows: @@ -36851,7 +36896,8 @@ John Malmberg, @EMAIL{wb8tyw@@qsl.net,wb8tyw at qsl.net}. @end multitable If your bug is also reproducible under Unix, please send a copy of your -report to the @EMAIL{bug-gawk@@gnu.org,bug-gawk at gnu dot org} email list as well. +report to the @EMAIL{bug-gawk@@gnu.org,bug-gawk at gnu dot org} email +list as well. @c ENDOFRANGE dbugg @c ENDOFRANGE tblgawb @@ -741,9 +741,8 @@ out: if (do_debug) debug_prog(code_block); - else if (do_pretty_print && ! do_debug && getenv("GAWK_NO_PP_RUN") != NULL) - /* hack to run pretty printer only. need a better solution */ - ; + else if (do_pretty_print && ! do_profile) + ; /* run pretty printer only. */ else interpret(code_block); @@ -1127,6 +1126,10 @@ load_environ() */ path_environ("AWKPATH", defpath); path_environ("AWKLIBPATH", deflibpath); + + /* set up array functions */ + init_env_array(ENVIRON_node); + return ENVIRON_node; } @@ -1175,6 +1175,95 @@ do_mpfr_srand(int nargs) return res; } +/* do_mpfr_div --- do integer division, return quotient and remainder in dest array */ + +/* + * We define the semantics as: + * numerator = int(numerator) + * denominator = int(denonmator) + * quotient = int(numerator / denomator) + * remainder = int(numerator % denomator) + */ + +NODE * +do_mpfr_div(int nargs) +{ + NODE *numerator, *denominator, *result; + NODE *num, *denom; + NODE *quotient, *remainder; + NODE *sub, **lhs; + + result = POP_PARAM(); + if (result->type != Node_var_array) + fatal(_("div: third argument is not an array")); + assoc_clear(result); + + denominator = POP_SCALAR(); + numerator = POP_SCALAR(); + + if (do_lint) { + if ((numerator->flags & (NUMCUR|NUMBER)) == 0) + lintwarn(_("div: received non-numeric first argument")); + if ((denominator->flags & (NUMCUR|NUMBER)) == 0) + lintwarn(_("div: received non-numeric second argument")); + } + + (void) force_number(numerator); + (void) force_number(denominator); + + /* convert numerator and denominator to integer */ + if (is_mpg_integer(numerator)) { + num = mpg_integer(); + mpz_set(num->mpg_i, numerator->mpg_i); + } else { + if (! mpfr_number_p(numerator->mpg_numbr)) { + /* [+-]inf or NaN */ + return numerator; + } + + num = mpg_integer(); + mpfr_get_z(num->mpg_i, numerator->mpg_numbr, MPFR_RNDZ); + } + + if (is_mpg_integer(denominator)) { + denom = mpg_integer(); + mpz_set(denom->mpg_i, denominator->mpg_i); + } else { + if (! mpfr_number_p(denominator->mpg_numbr)) { + /* [+-]inf or NaN */ + return denominator; + } + + denom = mpg_integer(); + mpfr_get_z(denom->mpg_i, denominator->mpg_numbr, MPFR_RNDZ); + } + + if (mpz_sgn(denom->mpg_i) == 0) + fatal(_("div: division by zero attempted")); + + quotient = mpg_integer(); + remainder = mpg_integer(); + + /* do the division */ + mpz_tdiv_qr(quotient->mpg_i, remainder->mpg_i, num->mpg_i, denom->mpg_i); + unref(num); + unref(denom); + unref(numerator); + unref(denominator); + + sub = make_string("quotient", 8); + lhs = assoc_lookup(result, sub); + unref(*lhs); + *lhs = quotient; + + sub = make_string("remainder", 9); + lhs = assoc_lookup(result, sub); + unref(*lhs); + *lhs = remainder; + + return make_number((AWKNUM) 0.0); +} + /* * mpg_tofloat --- convert an arbitrary-precision integer operand to * a float without loss of precision. It is assumed that the diff --git a/pc/config.h b/pc/config.h index 85389eb2..c5d78a96 100644 --- a/pc/config.h +++ b/pc/config.h @@ -423,7 +423,7 @@ #define PACKAGE_NAME "GNU Awk" /* Define to the full name and version of this package. */ -#define PACKAGE_STRING "GNU Awk 4.1.1a" +#define PACKAGE_STRING "GNU Awk 4.1.60" /* Define to the one symbol short name of this package. */ #define PACKAGE_TARNAME "gawk" @@ -432,7 +432,7 @@ #define PACKAGE_URL "http://www.gnu.org/software/gawk/" /* Define to the version of this package. */ -#define PACKAGE_VERSION "4.1.1a" +#define PACKAGE_VERSION "4.1.60" /* Define to 1 if *printf supports %F format */ #undef PRINTF_HAS_F_FORMAT @@ -494,7 +494,7 @@ /* Version number of package */ -#define VERSION "4.1.1a" +#define VERSION "4.1.60" /* Enable large inode numbers on Mac OS X 10.5. */ #ifndef _DARWIN_USE_64_BIT_INODE @@ -1,5 +1,5 @@ # Italian messages for GNU Awk -# Copyright (C) 2002-2013 Free Software Foundation, Inc. +# Copyright (C) 2002-2014 Free Software Foundation, Inc. # Antonio Colombo <azc100@gmail.com>. # msgid "" @@ -7,7 +7,7 @@ msgstr "" "Project-Id-Version: GNU Awk 4.0.73, API: 0.0\n" "Report-Msgid-Bugs-To: arnold@skeeve.com\n" "POT-Creation-Date: 2014-04-08 19:23+0300\n" -"PO-Revision-Date: 2014-01-15 10:39+0100\n" +"PO-Revision-Date: 2014-06-14 17:50+0100\n" "Last-Translator: Antonio Colombo <azc100@gmail.com>\n" "Language-Team: Italian <it@li.org>\n" "Language: it\n" @@ -211,7 +211,7 @@ msgstr "`getline' invalida all'interno della regola `%s'" #: awkgram.y:1425 msgid "non-redirected `getline' undefined inside END action" -msgstr "`getline' non re-diretta indefinita dentro `azione' END" +msgstr "`getline' non ri-diretta indefinita dentro `azione' END" #: awkgram.y:1444 msgid "old awk does not support multidimensional arrays" @@ -1141,7 +1141,7 @@ msgstr "" #: command.y:855 msgid "list [-|+|[filename:]lineno|function|range] - list specified line(s)." msgstr "" -"list [-|+|[nome-file:]num_linea|funzione|intervallo] - elenca riga/he " +"list [-|+|[nome-file:]num_riga|funzione|intervallo] - elenca riga/he " "richiesta/e." #: command.y:857 @@ -1229,7 +1229,7 @@ msgid "" "line or line N within current frame." msgstr "" "until [[nome-file:]N|funzione] - esegui finché il programma arriva una " -"rigadifferente, o alla riga N nell'elemento di stack corrente." +"riga differente, o alla riga N nell'elemento di stack corrente." #: command.y:895 msgid "unwatch [N] - remove variable(s) from watch list." @@ -2615,23 +2615,23 @@ msgstr "chiusura di fd %d (`%s') non riuscita (%s)" #: io.c:716 msgid "redirection not allowed in sandbox mode" -msgstr "re-direzione non consentita in modo `sandbox'" +msgstr "ri-direzione non consentita in modo `sandbox'" #: io.c:750 #, c-format msgid "expression in `%s' redirection only has numeric value" -msgstr "espressione nella re-direzione `%s' ha solo un valore numerico" +msgstr "espressione nella ri-direzione `%s' ha solo un valore numerico" #: io.c:756 #, c-format msgid "expression for `%s' redirection has null string value" -msgstr "espressione nella re-direzione `%s' ha per valore la stringa nulla" +msgstr "espressione nella ri-direzione `%s' ha per valore la stringa nulla" #: io.c:761 #, c-format msgid "filename `%s' for `%s' redirection may be result of logical expression" msgstr "" -"nome-file `%s' per la re-direzione `%s' può essere il risultato di una " +"nome-file `%s' per la ri-direzione `%s' può essere il risultato di una " "espressione logica" #: io.c:809 @@ -2658,12 +2658,12 @@ msgstr "" #: io.c:986 #, c-format msgid "can't redirect from `%s' (%s)" -msgstr "non riesco a re-dirigere da `%s' (%s)" +msgstr "non riesco a ri-dirigere da `%s' (%s)" #: io.c:989 #, c-format msgid "can't redirect to `%s' (%s)" -msgstr "non riesco a re-dirigere a `%s' (%s)" +msgstr "non riesco a ri-dirigere a `%s' (%s)" #: io.c:1040 msgid "" @@ -2692,12 +2692,12 @@ msgstr "close: `%.*s' non è un file aperto, una `pipe' o un co-processo" #: io.c:1108 msgid "close of redirection that was never opened" -msgstr "chiusura di una re-direzione mai aperta" +msgstr "chiusura di una ri-direzione mai aperta" #: io.c:1205 #, c-format msgid "close: redirection `%s' not opened with `|&', second argument ignored" -msgstr "close: re-direzione `%s' non aperta con `|&', ignoro secondo argomento" +msgstr "close: ri-direzione `%s' non aperta con `|&', ignoro secondo argomento" #: io.c:1222 #, c-format @@ -3313,7 +3313,7 @@ msgstr "%s: argomento #%d con valore negativo %Zd, darà risultati strani" #: msg.c:68 #, c-format msgid "cmd. line:" -msgstr "linea com.:" +msgstr "riga com.:" #: node.c:421 msgid "backslash at end of string" @@ -3427,7 +3427,7 @@ msgstr "" #: profile.c:1513 #, c-format msgid "redir2str: unknown redirection type %d" -msgstr "redir2str: tipo di re-direzione non noto %d" +msgstr "redir2str: tipo di ri-direzione non noto %d" #: re.c:607 #, c-format @@ -3503,5 +3503,3 @@ msgstr "Nessuna espressione regolare precedente" msgid "can not pop main context" msgstr "non posso salire più in alto nello stack" -#~ msgid "range of the form `[%c-%c]' is locale dependent" -#~ msgstr "intervallo della forma `[%c-%c]' dipende da `locale'" diff --git a/str_array.c b/str_array.c index aa82d71b..33c9ddcc 100644 --- a/str_array.c +++ b/str_array.c @@ -69,6 +69,25 @@ afunc_t str_array_func[] = { (afunc_t) 0, }; +static NODE **env_remove(NODE *symbol, NODE *subs); +static NODE **env_store(NODE *symbol, NODE *subs); +static NODE **env_clear(NODE *symbol, NODE *subs); + +/* special case for ENVIRON */ +afunc_t env_array_func[] = { + str_array_init, + (afunc_t) 0, + null_length, + str_lookup, + str_exists, + env_clear, + env_remove, + str_list, + str_copy, + str_dump, + env_store, +}; + static inline NODE **str_find(NODE *symbol, NODE *s1, size_t code1, unsigned long hash1); static void grow_table(NODE *symbol); @@ -737,3 +756,63 @@ scramble(unsigned long x) return x; } + +/* env_remove --- for ENVIRON, remove value from real environment */ + +static NODE ** +env_remove(NODE *symbol, NODE *subs) +{ + NODE **val = str_remove(symbol, subs); + + if (val != NULL) + (void) unsetenv(subs->stptr); + + return val; +} + +/* env_clear --- clear out the environment when ENVIRON is deleted */ + +static NODE ** +env_clear(NODE *symbol, NODE *subs) +{ + extern char **environ; + NODE **val = str_clear(symbol, subs); + + environ = NULL; /* ZAP! */ + + /* str_clear zaps the vtable, reset it */ + symbol->array_funcs = env_array_func; + + return val; +} + +/* env_store --- post assign function for ENVIRON, put new value into env */ + +static NODE ** +env_store(NODE *symbol, NODE *subs) +{ + NODE **val = str_exists(symbol, subs); + const char *newval; + + assert(val != NULL); + + newval = (*val)->stptr; + if (newval == NULL) + newval = ""; + + (void) setenv(subs->stptr, newval, 1); + + return val; +} + +/* init_env_array --- set up the pointers for ENVIRON. A bit hacky. */ + +void +init_env_array(NODE *env_node) +{ + /* If POSIX simply don't reset the vtable and things work as before */ + if (do_posix) + return; + + env_node->array_funcs = env_array_func; +} diff --git a/test/ChangeLog b/test/ChangeLog index 4f72280b..ed673d8c 100644 --- a/test/ChangeLog +++ b/test/ChangeLog @@ -13,6 +13,11 @@ * printhuge.awk, printhuge.ok: New files. Test from mail.green.fox@gmail.com. +2014-06-24 Arnold D. Robbins <arnold@skeeve.com> + + * Makefile.am (profile1, profile4, profile5): Adjust for change to + --pretty-print option. + 2014-06-19 Michael Forney <forney@google.com> * Makefile.am (poundbang): Fix relative path of AWKPROG. @@ -229,6 +234,12 @@ * Makefile.am (badassign1): New test. * badassign1.awk, badassign1.ok: New files. +2013-09-25 Arnold D. Robbins <arnold@skeeve.com> + + * Makfile.am (randtest): New test. + * randtest.sh, randtest.ok: New files. + * rand.ok: Updated to reflect new results based on code change. + 2013-09-13 Arnold D. Robbins <arnold@skeeve.com> * Makefile.am: Fix quoting for generation of Maketests file so diff --git a/test/Makefile.am b/test/Makefile.am index c822163a..d4ef501c 100644 --- a/test/Makefile.am +++ b/test/Makefile.am @@ -707,6 +707,8 @@ EXTRA_DIST = \ rand-mpfr.ok \ rand.awk \ rand.ok \ + randtest.sh \ + randtest.ok \ range1.awk \ range1.in \ range1.ok \ @@ -981,7 +983,7 @@ BASIC_TESTS = \ paramdup paramres paramtyp paramuninitglobal parse1 parsefld parseme \ pcntplus posix2008sub prdupval prec printf0 printf1 prmarscl prmreuse \ prt1eval prtoeval \ - rand range1 rebt8b1 redfilnm regeq regexprange regrange reindops \ + rand randtest range1 rebt8b1 redfilnm regeq regexprange regrange reindops \ reparse resplit rri1 rs rsnul1nl rsnulbig rsnulbig2 rstest1 rstest2 \ rstest3 rstest4 rstest5 rswhite \ scalar sclforin sclifin sortempty splitargv splitarr splitdef \ @@ -1659,10 +1661,11 @@ dumpvars:: profile1: @echo $@ - @$(AWK) --pretty-print=ap-$@.out -f "$(srcdir)"/xref.awk "$(srcdir)"/dtdgport.awk > _$@.out1 + @$(AWK) -f "$(srcdir)"/xref.awk "$(srcdir)"/dtdgport.awk > _$@.out1 + @$(AWK) --pretty-print=ap-$@.out -f "$(srcdir)"/xref.awk @$(AWK) -f ap-$@.out "$(srcdir)"/dtdgport.awk > _$@.out2 ; rm ap-$@.out @$(CMP) _$@.out1 _$@.out2 && rm _$@.out[12] || { echo EXIT CODE: $$? >>_$@ ; \ - cp "$(srcdir)"/dtdgport.awk > $@.ok ; } + cp "$(srcdir)"/dtdgport.awk $@.ok ; } profile2: @@ -1679,13 +1682,13 @@ profile3: profile4: @echo $@ - @GAWK_NO_PP_RUN=1 $(AWK) --profile=ap-$@.out -f "$(srcdir)"/$@.awk > /dev/null + @$(AWK) --pretty-print=ap-$@.out -f "$(srcdir)"/$@.awk > /dev/null @sed 1,2d < ap-$@.out > _$@; rm ap-$@.out @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@ profile5: @echo $@ - @GAWK_NO_PP_RUN=1 $(AWK) --profile=ap-$@.out -f "$(srcdir)"/$@.awk > /dev/null + @$(AWK) --pretty-print=ap-$@.out -f "$(srcdir)"/$@.awk > /dev/null @sed 1,2d < ap-$@.out > _$@; rm ap-$@.out @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@ @@ -1918,6 +1921,12 @@ dfamb1: AWKPATH="$(srcdir)" $(AWK) -f $@.awk "$(srcdir)"/$@.in >_$@ 2>&1 || echo EXIT CODE: $$? >>_$@ @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@ + +randtest:: + @echo $@ + @GAWK="$(AWKPROG)" "$(srcdir)"/randtest.sh >_$@ + @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@ + backbigs1: @echo $@ @[ -z "$$GAWKLOCALE" ] && GAWKLOCALE=en_US.UTF-8; \ diff --git a/test/Makefile.in b/test/Makefile.in index 1660ab8f..449ff46b 100644 --- a/test/Makefile.in +++ b/test/Makefile.in @@ -953,6 +953,8 @@ EXTRA_DIST = \ rand-mpfr.ok \ rand.awk \ rand.ok \ + randtest.sh \ + randtest.ok \ range1.awk \ range1.in \ range1.ok \ @@ -1226,7 +1228,7 @@ BASIC_TESTS = \ paramdup paramres paramtyp paramuninitglobal parse1 parsefld parseme \ pcntplus posix2008sub prdupval prec printf0 printf1 prmarscl prmreuse \ prt1eval prtoeval \ - rand range1 rebt8b1 redfilnm regeq regexprange regrange reindops \ + rand randtest range1 rebt8b1 redfilnm regeq regexprange regrange reindops \ reparse resplit rri1 rs rsnul1nl rsnulbig rsnulbig2 rstest1 rstest2 \ rstest3 rstest4 rstest5 rswhite \ scalar sclforin sclifin sortempty splitargv splitarr splitdef \ @@ -2084,10 +2086,11 @@ dumpvars:: profile1: @echo $@ - @$(AWK) --pretty-print=ap-$@.out -f "$(srcdir)"/xref.awk "$(srcdir)"/dtdgport.awk > _$@.out1 + @$(AWK) -f "$(srcdir)"/xref.awk "$(srcdir)"/dtdgport.awk > _$@.out1 + @$(AWK) --pretty-print=ap-$@.out -f "$(srcdir)"/xref.awk @$(AWK) -f ap-$@.out "$(srcdir)"/dtdgport.awk > _$@.out2 ; rm ap-$@.out @$(CMP) _$@.out1 _$@.out2 && rm _$@.out[12] || { echo EXIT CODE: $$? >>_$@ ; \ - cp "$(srcdir)"/dtdgport.awk > $@.ok ; } + cp "$(srcdir)"/dtdgport.awk $@.ok ; } profile2: @echo $@ @@ -2103,13 +2106,13 @@ profile3: profile4: @echo $@ - @GAWK_NO_PP_RUN=1 $(AWK) --profile=ap-$@.out -f "$(srcdir)"/$@.awk > /dev/null + @$(AWK) --pretty-print=ap-$@.out -f "$(srcdir)"/$@.awk > /dev/null @sed 1,2d < ap-$@.out > _$@; rm ap-$@.out @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@ profile5: @echo $@ - @GAWK_NO_PP_RUN=1 $(AWK) --profile=ap-$@.out -f "$(srcdir)"/$@.awk > /dev/null + @$(AWK) --pretty-print=ap-$@.out -f "$(srcdir)"/$@.awk > /dev/null @sed 1,2d < ap-$@.out > _$@; rm ap-$@.out @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@ @@ -2342,6 +2345,11 @@ dfamb1: AWKPATH="$(srcdir)" $(AWK) -f $@.awk "$(srcdir)"/$@.in >_$@ 2>&1 || echo EXIT CODE: $$? >>_$@ @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@ +randtest:: + @echo $@ + @GAWK="$(AWKPROG)" "$(srcdir)"/randtest.sh >_$@ + @-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@ + backbigs1: @echo $@ @[ -z "$$GAWKLOCALE" ] && GAWKLOCALE=en_US.UTF-8; \ diff --git a/test/rand.ok b/test/rand.ok index 60432b95..1df4ba39 100644 --- a/test/rand.ok +++ b/test/rand.ok @@ -1 +1 @@ - 62 67 88 6 35 77 3 68 30 96 90 26 35 8 88 93 49 53 37 + 67 6 77 68 96 26 8 93 53 74 53 95 78 74 96 77 33 58 91 diff --git a/test/randtest.ok b/test/randtest.ok new file mode 100644 index 00000000..e69de29b --- /dev/null +++ b/test/randtest.ok diff --git a/test/randtest.sh b/test/randtest.sh new file mode 100755 index 00000000..b17fda73 --- /dev/null +++ b/test/randtest.sh @@ -0,0 +1,113 @@ +# THIS PURPOSELY DOES NOT HAVE A !# LINE !!!! +# +# Date: Mon, 9 Sep 2013 14:49:43 -0700 +# From: Bob Jewett <jewett@bill.scs.agilent.com> +# Message-Id: <201309092149.r89Lnh94010909@bill.scs.agilent.com> +# To: arnold@skeeve.com +# Subject: Re: [bug-gawk] Bug in random() in builtin.c +# +# Hi Arnold, +# +# Attached below is a script that tests gawk for this particular +# rand() problem. The pair-wise combinations show a strong +# autocorrelation for a delay of 31 pairs of rand() samples. +# +# The script prints out the measured autocorrelation for a record +# of NSAMPLES pairs. It also prints a fail message at the end if +# it fails. +# +# If you want to see the autocorrelation values, there is a print +# statement that if uncommented will save them to a file. +# +# Please let me know if the mailer screws up the transfer or +# if you have any questions about the test. +# +# Best regards, +# Bob +# +# -------------- test_pair_power_autocorrelation ----------------------- +# +#!/bin/ksh + +#GAWK=/bin/gawk + +# ADR: Get GAWK from the environment. +# Additional note: This wants ksh/bash for the use of $RANDOM below to +# seed the generator. However, shells that don't provide it won't be +# a problem since gawk will then seed the generator with the time of day, +# as srand() will be called without an argument. + +# large NSAMPLES and NRUNS will bring any correlation out of the noise better +NSAMPLES=1024; MAX_ALLOWED_SIGMA=5; NRUNS=50; + +$GAWK 'BEGIN{ + srand('$RANDOM'); + nsamples=('$NSAMPLES'); + max_allowed_sigma=('$MAX_ALLOWED_SIGMA'); + nruns=('$NRUNS'); + for(tau=0;tau<nsamples/2;tau++) corr[tau]=0; + + for(run=0;run<nruns;run++) { + sum=0; + + # Fill an array with a sequence of samples that are a + # function of pairs of rand() values. + + for(i=0;i<nsamples;i++) { + samp[i]=((rand()-0.5)*(rand()-0.5))^2; + sum=sum+samp[i]; + } + + # Subtract off the mean of the sequence: + + mean=sum/nsamples; + for(i=0;i<nsamples;i++) samp[i]=samp[i]-mean; + + # Calculate an autocorrelation function on the sequence. + # Because the values of rand() should be independent, there + # should be no peaks in the autocorrelation. + + for(tau=0;tau<nsamples/2;tau++) { + sum=0; + for(i=0;i<nsamples/2;i++) sum=sum+samp[i]*samp[i+tau]; + corr[tau]=corr[tau]+sum; + } + + } + # Normalize the autocorrelation to the tau=0 value. + + max_corr=corr[0]; + for(tau=0;tau<nsamples/2;tau++) corr[tau]=corr[tau]/max_corr; + + # OPTIONALLY Print out the autocorrelation values: + + # for(tau=0;tau<nsamples/2;tau++) print tau, corr[tau] > "pairpower_corr.data"; + + # Calculate the sigma for the non-zero tau values: + + power_sum=0; + + for(tau=1;tau<nsamples/2;tau++) power_sum=power_sum+(corr[tau])^2; + + sigma=sqrt(power_sum/(nsamples/2-1)); + + # See if any of the correlations exceed a reasonable number of sigma: + + passed=1; + for(tau=1;tau<nsamples/2;tau++) { + if ( abs(corr[tau])/sigma > max_allowed_sigma ) { + print "Tau=", tau ", Autocorr=", corr[tau]/sigma, "sigma"; + passed=0; + } + } + if(!passed) { + print "Test failed." + exit(1); + } + else exit (0); + } + +function abs(abs_input) { return(sqrt(abs_input^2)) ; } +' + +exit 0 |