Mercurial > gnulib
view m4/c-strtod.m4 @ 40177:dcd889592b62
dtoastr,ftoastr,ldtoastr: port to c-strtod changes
Decouple these modules from c-strtod. Nowadays it’s reasonable to
assume the C99 signatures for strtod and strtold. Programs that
require stricter adherence to C99 should also use the strtod and
strtold modules as needed, and we no longer need the
HAVE_C99_STRTOLD macro.
* NEWS: Mention this.
* lib/ftoastr.c (STRTOF) [LENGTH == 3]: Assume strtold.
* m4/c-strtod.m4 (gl_C_STRTOLD): Do not define HAVE_C99_STRTOLD.
* modules/dtoastr, modules/ftoastr, modules/ldtoastr:
(Files): Remove m4/c-strtod.m4.
(configure.ac): Do not require gl_C99_STRTOLD, which no longer
exists.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 02 Feb 2019 13:01:55 -0800 |
parents | b716418da8b9 |
children |
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# c-strtod.m4 serial 18 # Copyright (C) 2004-2006, 2009-2019 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # Written by Paul Eggert. dnl Prerequisites of lib/c-strtod.c. AC_DEFUN([gl_C_STRTOD], [ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([gt_FUNC_USELOCALE]) AC_CHECK_HEADERS_ONCE([xlocale.h]) dnl We can't use AC_CHECK_FUNC here, because strtod_l() is defined as a dnl static inline function when compiling for Android 7.1 or older. AC_CACHE_CHECK([for strtod_l], [gl_cv_func_strtod_l], [AC_LINK_IFELSE( [AC_LANG_PROGRAM( [[#include <stdlib.h> #include <locale.h> #if HAVE_XLOCALE_H # include <xlocale.h> #endif locale_t loc; ]], [[char *end; return strtod_l("0",&end,loc) < 0.0; ]]) ], [gl_cv_func_strtod_l=yes], [gl_cv_func_strtod_l=no]) ]) if test $gl_cv_func_strtod_l = yes; then HAVE_STRTOD_L=1 else HAVE_STRTOD_L=0 fi AC_DEFINE_UNQUOTED([HAVE_STRTOD_L], [$HAVE_STRTOD_L], [Define to 1 if the system has the 'strtod_l' function.]) ]) dnl Prerequisites of lib/c-strtold.c. AC_DEFUN([gl_C_STRTOLD], [ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([gt_FUNC_USELOCALE]) AC_CHECK_FUNCS([strtold_l]) ])