diff options
Diffstat (limited to 'doc/gawk.info')
| -rw-r--r-- | doc/gawk.info | 629 |
1 files changed, 316 insertions, 313 deletions
diff --git a/doc/gawk.info b/doc/gawk.info index 1c74fc99..0329a038 100644 --- a/doc/gawk.info +++ b/doc/gawk.info @@ -13494,8 +13494,11 @@ have a parameter with the same name as the function itself. CAUTION: According to the POSIX standard, function parameters cannot have the same name as one of the special predefined variables (*note Built-in Variables::), nor may a function - parameter have the same name as another function. Not all - versions of `awk' enforce these restrictions. + parameter have the same name as another function. + + Not all versions of `awk' enforce these restrictions. `gawk' + always enforces the first restriction. With `--posix' (*note + Options::), it also enforces the second restriction. Local variables act like the empty string if referenced where a string value is required, and like zero if referenced where a numeric @@ -14097,13 +14100,13 @@ using indirect function calls: # average --- return the average of the values in fields $first - $last - function average(first, last, the_sum, i) + function average(first, last, sum, i) { - the_sum = 0; + sum = 0; for (i = first; i <= last; i++) - the_sum += $i + sum += $i - return the_sum / (last - first + 1) + return sum / (last - first + 1) } # sum --- return the sum of the values in fields $first - $last @@ -32305,7 +32308,7 @@ Index * common extensions, \x escape sequence: Escape Sequences. (line 61) * common extensions, BINMODE variable: PC Using. (line 33) * common extensions, delete to delete entire arrays: Delete. (line 39) -* common extensions, func keyword: Definition Syntax. (line 95) +* common extensions, func keyword: Definition Syntax. (line 98) * common extensions, length() applied to an array: String Functions. (line 201) * common extensions, RS as a regexp: gawk split records. (line 6) @@ -32827,7 +32830,7 @@ Index * extensions, common, BINMODE variable: PC Using. (line 33) * extensions, common, delete to delete entire arrays: Delete. (line 39) * extensions, common, fflush() function: I/O Functions. (line 43) -* extensions, common, func keyword: Definition Syntax. (line 95) +* extensions, common, func keyword: Definition Syntax. (line 98) * extensions, common, length() applied to an array: String Functions. (line 201) * extensions, common, RS as a regexp: gawk split records. (line 6) @@ -33044,7 +33047,7 @@ Index * functions, library, user database, reading: Passwd Functions. (line 6) * functions, names of: Definition Syntax. (line 23) -* functions, recursive: Definition Syntax. (line 85) +* functions, recursive: Definition Syntax. (line 88) * functions, string-translation: I18N Functions. (line 6) * functions, undefined: Pass By Value/Reference. (line 68) @@ -33771,7 +33774,7 @@ Index (line 65) * portability, deleting array elements: Delete. (line 56) * portability, example programs: Library Functions. (line 42) -* portability, functions, defining: Definition Syntax. (line 111) +* portability, functions, defining: Definition Syntax. (line 114) * portability, gawk: New Ports. (line 6) * portability, gettext library and: Explaining gettext. (line 11) * portability, internationalization and: I18N Portability. (line 6) @@ -33816,7 +33819,7 @@ Index * POSIX awk, field separators and <1>: Full Line Fields. (line 16) * POSIX awk, field separators and: Fields. (line 6) * POSIX awk, FS variable and: User-modified. (line 60) -* POSIX awk, function keyword in: Definition Syntax. (line 95) +* POSIX awk, function keyword in: Definition Syntax. (line 98) * POSIX awk, functions and, gsub()/sub(): Gory Details. (line 90) * POSIX awk, functions and, length(): String Functions. (line 180) * POSIX awk, GNU long options and: Options. (line 15) @@ -33909,7 +33912,7 @@ Index * programming conventions, functions, calling: Calling Built-in. (line 10) * programming conventions, functions, writing: Definition Syntax. - (line 67) + (line 70) * programming conventions, gawk extensions: Internal File Ops. (line 45) * programming conventions, private variable names: Library Names. @@ -33978,7 +33981,7 @@ Index * records, splitting input into: Records. (line 6) * records, terminating: awk split records. (line 125) * records, treating files as: gawk split records. (line 93) -* recursive functions: Definition Syntax. (line 85) +* recursive functions: Definition Syntax. (line 88) * redirect gawk output, in debugger: Debugger Info. (line 72) * redirection of input: Getline/File. (line 6) * redirection of output: Redirection. (line 6) @@ -34147,7 +34150,7 @@ Index * set directory of message catalogs: I18N Functions. (line 12) * set watchpoint: Viewing And Changing Data. (line 67) -* shadowing of variable values: Definition Syntax. (line 73) +* shadowing of variable values: Definition Syntax. (line 76) * shell quoting, rules for: Quoting. (line 6) * shells, piping commands into: Redirection. (line 136) * shells, quoting: Using Shell Variables. @@ -34521,7 +34524,7 @@ Index * variables, predefined conveying information: Auto-set. (line 6) * variables, private: Library Names. (line 11) * variables, setting: Options. (line 32) -* variables, shadowing: Definition Syntax. (line 73) +* variables, shadowing: Definition Syntax. (line 76) * variables, types of: Assignment Ops. (line 40) * variables, types of, comparison expressions and: Typing and Comparison. (line 9) @@ -34878,303 +34881,303 @@ Node: Type Functions564425 Node: I18N Functions565576 Node: User-defined567221 Node: Definition Syntax568026 -Ref: Definition Syntax-Footnote-1573525 -Node: Function Example573596 -Ref: Function Example-Footnote-1576515 -Node: Function Caveats576537 -Node: Calling A Function577055 -Node: Variable Scope578013 -Node: Pass By Value/Reference581001 -Node: Return Statement584496 -Node: Dynamic Typing587477 -Node: Indirect Calls588406 -Ref: Indirect Calls-Footnote-1599724 -Node: Functions Summary599852 -Node: Library Functions602554 -Ref: Library Functions-Footnote-1606163 -Ref: Library Functions-Footnote-2606306 -Node: Library Names606477 -Ref: Library Names-Footnote-1609931 -Ref: Library Names-Footnote-2610154 -Node: General Functions610240 -Node: Strtonum Function611343 -Node: Assert Function614365 -Node: Round Function617689 -Node: Cliff Random Function619230 -Node: Ordinal Functions620246 -Ref: Ordinal Functions-Footnote-1623309 -Ref: Ordinal Functions-Footnote-2623561 -Node: Join Function623772 -Ref: Join Function-Footnote-1625541 -Node: Getlocaltime Function625741 -Node: Readfile Function629485 -Node: Shell Quoting631455 -Node: Data File Management632856 -Node: Filetrans Function633488 -Node: Rewind Function637544 -Node: File Checking638931 -Ref: File Checking-Footnote-1640263 -Node: Empty Files640464 -Node: Ignoring Assigns642443 -Node: Getopt Function643994 -Ref: Getopt Function-Footnote-1655456 -Node: Passwd Functions655656 -Ref: Passwd Functions-Footnote-1664493 -Node: Group Functions664581 -Ref: Group Functions-Footnote-1672475 -Node: Walking Arrays672688 -Node: Library Functions Summary674291 -Node: Library Exercises675692 -Node: Sample Programs676972 -Node: Running Examples677742 -Node: Clones678470 -Node: Cut Program679694 -Node: Egrep Program689413 -Ref: Egrep Program-Footnote-1696911 -Node: Id Program697021 -Node: Split Program700666 -Ref: Split Program-Footnote-1704114 -Node: Tee Program704242 -Node: Uniq Program707031 -Node: Wc Program714450 -Ref: Wc Program-Footnote-1718700 -Node: Miscellaneous Programs718794 -Node: Dupword Program720007 -Node: Alarm Program722038 -Node: Translate Program726842 -Ref: Translate Program-Footnote-1731407 -Node: Labels Program731677 -Ref: Labels Program-Footnote-1735028 -Node: Word Sorting735112 -Node: History Sorting739183 -Node: Extract Program741019 -Node: Simple Sed748544 -Node: Igawk Program751612 -Ref: Igawk Program-Footnote-1765936 -Ref: Igawk Program-Footnote-2766137 -Ref: Igawk Program-Footnote-3766259 -Node: Anagram Program766374 -Node: Signature Program769431 -Node: Programs Summary770678 -Node: Programs Exercises771871 -Ref: Programs Exercises-Footnote-1776002 -Node: Advanced Features776093 -Node: Nondecimal Data778041 -Node: Array Sorting779631 -Node: Controlling Array Traversal780328 -Ref: Controlling Array Traversal-Footnote-1788661 -Node: Array Sorting Functions788779 -Ref: Array Sorting Functions-Footnote-1792668 -Node: Two-way I/O792864 -Ref: Two-way I/O-Footnote-1797809 -Ref: Two-way I/O-Footnote-2797995 -Node: TCP/IP Networking798077 -Node: Profiling800950 -Node: Advanced Features Summary809227 -Node: Internationalization811160 -Node: I18N and L10N812640 -Node: Explaining gettext813326 -Ref: Explaining gettext-Footnote-1818351 -Ref: Explaining gettext-Footnote-2818535 -Node: Programmer i18n818700 -Ref: Programmer i18n-Footnote-1823566 -Node: Translator i18n823615 -Node: String Extraction824409 -Ref: String Extraction-Footnote-1825540 -Node: Printf Ordering825626 -Ref: Printf Ordering-Footnote-1828412 -Node: I18N Portability828476 -Ref: I18N Portability-Footnote-1830931 -Node: I18N Example830994 -Ref: I18N Example-Footnote-1833797 -Node: Gawk I18N833869 -Node: I18N Summary834507 -Node: Debugger835846 -Node: Debugging836868 -Node: Debugging Concepts837309 -Node: Debugging Terms839162 -Node: Awk Debugging841734 -Node: Sample Debugging Session842628 -Node: Debugger Invocation843148 -Node: Finding The Bug844532 -Node: List of Debugger Commands851007 -Node: Breakpoint Control852340 -Node: Debugger Execution Control856036 -Node: Viewing And Changing Data859400 -Node: Execution Stack862778 -Node: Debugger Info864415 -Node: Miscellaneous Debugger Commands868432 -Node: Readline Support873461 -Node: Limitations874353 -Node: Debugging Summary876467 -Node: Arbitrary Precision Arithmetic877635 -Node: Computer Arithmetic879051 -Ref: table-numeric-ranges882649 -Ref: Computer Arithmetic-Footnote-1883508 -Node: Math Definitions883565 -Ref: table-ieee-formats886853 -Ref: Math Definitions-Footnote-1887457 -Node: MPFR features887562 -Node: FP Math Caution889233 -Ref: FP Math Caution-Footnote-1890283 -Node: Inexactness of computations890652 -Node: Inexact representation891611 -Node: Comparing FP Values892968 -Node: Errors accumulate894050 -Node: Getting Accuracy895483 -Node: Try To Round898145 -Node: Setting precision899044 -Ref: table-predefined-precision-strings899728 -Node: Setting the rounding mode901517 -Ref: table-gawk-rounding-modes901881 -Ref: Setting the rounding mode-Footnote-1905336 -Node: Arbitrary Precision Integers905515 -Ref: Arbitrary Precision Integers-Footnote-1910415 -Node: POSIX Floating Point Problems910564 -Ref: POSIX Floating Point Problems-Footnote-1914437 -Node: Floating point summary914475 -Node: Dynamic Extensions916669 -Node: Extension Intro918221 -Node: Plugin License919487 -Node: Extension Mechanism Outline920284 -Ref: figure-load-extension920712 -Ref: figure-register-new-function922192 -Ref: figure-call-new-function923196 -Node: Extension API Description925182 -Node: Extension API Functions Introduction926632 -Node: General Data Types931456 -Ref: General Data Types-Footnote-1937195 -Node: Memory Allocation Functions937494 -Ref: Memory Allocation Functions-Footnote-1940333 -Node: Constructor Functions940429 -Node: Registration Functions942163 -Node: Extension Functions942848 -Node: Exit Callback Functions945145 -Node: Extension Version String946393 -Node: Input 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Split Program-Footnote-1704231 +Node: Tee Program704359 +Node: Uniq Program707148 +Node: Wc Program714567 +Ref: Wc Program-Footnote-1718817 +Node: Miscellaneous Programs718911 +Node: Dupword Program720124 +Node: Alarm Program722155 +Node: Translate Program726959 +Ref: Translate Program-Footnote-1731524 +Node: Labels Program731794 +Ref: Labels Program-Footnote-1735145 +Node: Word Sorting735229 +Node: History Sorting739300 +Node: Extract Program741136 +Node: Simple Sed748661 +Node: Igawk Program751729 +Ref: Igawk Program-Footnote-1766053 +Ref: Igawk Program-Footnote-2766254 +Ref: Igawk Program-Footnote-3766376 +Node: Anagram Program766491 +Node: Signature Program769548 +Node: Programs Summary770795 +Node: Programs Exercises771988 +Ref: Programs Exercises-Footnote-1776119 +Node: Advanced Features776210 +Node: Nondecimal Data778158 +Node: Array Sorting779748 +Node: Controlling Array Traversal780445 +Ref: Controlling Array Traversal-Footnote-1788778 +Node: Array Sorting Functions788896 +Ref: Array Sorting Functions-Footnote-1792785 +Node: Two-way I/O792981 +Ref: Two-way I/O-Footnote-1797926 +Ref: Two-way I/O-Footnote-2798112 +Node: TCP/IP Networking798194 +Node: Profiling801067 +Node: Advanced Features Summary809344 +Node: Internationalization811277 +Node: I18N and L10N812757 +Node: Explaining gettext813443 +Ref: Explaining gettext-Footnote-1818468 +Ref: Explaining gettext-Footnote-2818652 +Node: Programmer i18n818817 +Ref: Programmer i18n-Footnote-1823683 +Node: Translator i18n823732 +Node: String Extraction824526 +Ref: String Extraction-Footnote-1825657 +Node: Printf Ordering825743 +Ref: Printf Ordering-Footnote-1828529 +Node: I18N Portability828593 +Ref: I18N Portability-Footnote-1831048 +Node: I18N Example831111 +Ref: I18N Example-Footnote-1833914 +Node: Gawk I18N833986 +Node: I18N Summary834624 +Node: Debugger835963 +Node: Debugging836985 +Node: Debugging Concepts837426 +Node: Debugging Terms839279 +Node: Awk Debugging841851 +Node: Sample Debugging Session842745 +Node: Debugger Invocation843265 +Node: Finding The Bug844649 +Node: List of Debugger Commands851124 +Node: Breakpoint Control852457 +Node: Debugger Execution Control856153 +Node: Viewing And Changing Data859517 +Node: Execution Stack862895 +Node: Debugger Info864532 +Node: Miscellaneous Debugger Commands868549 +Node: Readline Support873578 +Node: Limitations874470 +Node: Debugging Summary876584 +Node: Arbitrary Precision Arithmetic877752 +Node: Computer Arithmetic879168 +Ref: table-numeric-ranges882766 +Ref: Computer Arithmetic-Footnote-1883625 +Node: Math Definitions883682 +Ref: table-ieee-formats886970 +Ref: Math Definitions-Footnote-1887574 +Node: MPFR features887679 +Node: FP Math Caution889350 +Ref: FP Math Caution-Footnote-1890400 +Node: Inexactness of computations890769 +Node: Inexact representation891728 +Node: Comparing FP Values893085 +Node: Errors accumulate894167 +Node: Getting Accuracy895600 +Node: Try To Round898262 +Node: Setting precision899161 +Ref: table-predefined-precision-strings899845 +Node: Setting the rounding mode901634 +Ref: table-gawk-rounding-modes901998 +Ref: Setting the rounding mode-Footnote-1905453 +Node: Arbitrary Precision Integers905632 +Ref: Arbitrary Precision Integers-Footnote-1910532 +Node: POSIX Floating Point Problems910681 +Ref: POSIX Floating Point Problems-Footnote-1914554 +Node: Floating point summary914592 +Node: Dynamic Extensions916786 +Node: Extension Intro918338 +Node: Plugin License919604 +Node: Extension Mechanism Outline920401 +Ref: figure-load-extension920829 +Ref: figure-register-new-function922309 +Ref: figure-call-new-function923313 +Node: Extension API Description925299 +Node: Extension API Functions Introduction926749 +Node: General Data Types931573 +Ref: General Data Types-Footnote-1937312 +Node: Memory Allocation Functions937611 +Ref: Memory Allocation Functions-Footnote-1940450 +Node: Constructor Functions940546 +Node: Registration Functions942280 +Node: Extension Functions942965 +Node: Exit Callback Functions945262 +Node: Extension Version String946510 +Node: Input Parsers947175 +Node: Output Wrappers957054 +Node: Two-way processors961569 +Node: Printing Messages963773 +Ref: Printing Messages-Footnote-1964849 +Node: Updating `ERRNO'965001 +Node: Requesting Values965741 +Ref: table-value-types-returned966469 +Node: Accessing Parameters967426 +Node: Symbol Table Access968657 +Node: Symbol table by name969171 +Node: Symbol table by cookie971152 +Ref: Symbol table by cookie-Footnote-1975296 +Node: Cached values975359 +Ref: Cached values-Footnote-1978858 +Node: Array Manipulation978949 +Ref: Array Manipulation-Footnote-1980047 +Node: Array Data Types980084 +Ref: Array Data Types-Footnote-1982739 +Node: Array Functions982831 +Node: Flattening Arrays986685 +Node: Creating Arrays993577 +Node: Extension API Variables998348 +Node: Extension Versioning998984 +Node: Extension API Informational Variables1000885 +Node: Extension API Boilerplate1001950 +Node: Finding 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