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Diffstat (limited to 'm4/strtod.m4')
| -rw-r--r-- | m4/strtod.m4 | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/m4/strtod.m4 b/m4/strtod.m4 new file mode 100644 index 00000000..a719fb92 --- /dev/null +++ b/m4/strtod.m4 @@ -0,0 +1,58 @@ +dnl +dnl strtod.m4 --- autoconf input file for gawk +dnl +dnl Copyright (C) 2001 the Free Software Foundation, Inc. +dnl +dnl This file is part of GAWK, the GNU implementation of the +dnl AWK Progamming Language. +dnl +dnl GAWK is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 2 of the License, or +dnl (at your option) any later version. +dnl +dnl GAWK is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +dnl GNU General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program; if not, write to the Free Software +dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + +dnl Check for strtod with C89 semantics + +AC_DEFUN(GAWK_AC_FUNC_STRTOD_C89, +[ +AC_CHECK_HEADERS(stdlib.h) +AC_CHECK_FUNCS(strtod) +AC_CACHE_CHECK([for strtod with C89 semantics], gawk_ac_cv_func_strtod_c89, +[AC_TRY_RUN( +[/* Test program from Arnold Robbins (arnold@skeeve.com) */ +#if HAVE_STDLIB_H +#include <stdlib.h> +#else +extern double strtod(); +#endif + +int +main () +{ +#if ! HAVE_STRTOD + exit(1); +#else + double d; + char *str = "0x345a"; + + d = strtod(str, 0); + if (d == 0) + exit (0); + else + exit (1); +}], +gawk_ac_cv_func_strtod_c89=yes, gawk_ac_cv_func_strtod_c89=no, +gawk_ac_cv_func_strtod_c89=no)]) +if test $gawk_ac_cv_func_strtod_c89 = no; then + AC_DEFINE(STRTOD_NOT_C89) +fi +])# GAWK_FUNC_STRTOD_C89 |