Mercurial > gnulib
view lib/isfinite.c @ 40172:31ab89a208b9
strtod, strtold: Use the locale's decimal point.
* lib/strtod.c: Include <locale.h>, <stdio.h>, <langinfo.h>.
(decimal_point_char): New function, copied from lib/vasnprintf.c.
(parse_number): Add a radixchar argument. Use it instead of '.'.
(STRTOD): Invoke decimal_point_char and pass the result to parse_number.
* m4/strtod.m4 (gl_PREREQ_STRTOD): Test whether nl_langinfo exists.
* m4/strtold.m4 (gl_PREREQ_STRTOLD): Likewise.
* tests/test-strtod1.c: New file.
* tests/test-strtod1.sh: New file.
* modules/strtod-tests (Files): Add test-strtod1.{sh,c}. Add
locale-fr.m4 and its dependencies.
(configure.ac): Invoke gt_LOCALE_FR, gt_LOCALE_FR_UTF8.
(Makefile.am): Arrange to compile test-strtod1.c and run
test-strtod1.sh.
* tests/test-strtold1.c: New file.
* tests/test-strtold1.sh: New file.
* modules/strtold-tests (Files): Add test-strtold1.{sh,c}. Add
locale-fr.m4 and its dependencies.
(configure.ac): Invoke gt_LOCALE_FR, gt_LOCALE_FR_UTF8.
(Makefile.am): Arrange to compile test-strtold1.c and run
test-strtold1.sh.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Fri, 01 Feb 2019 03:12:28 +0100 |
parents | b06060465f09 |
children |
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/* Test for finite value (zero, subnormal, or normal, and not infinite or NaN). Copyright (C) 2007-2019 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, see <https://www.gnu.org/licenses/>. */ /* Written by Ben Pfaff <blp@gnu.org>, 2007. */ #include <config.h> #include "isnanf-nolibm.h" #include "isnand-nolibm.h" #include "isnanl-nolibm.h" /* The "cc" compiler on HP-UX 11.11, when optimizing, simplifies the test x - y == 0.0 to x == y, a simplification which is invalid when x and y are Infinity. Disable this optimization. */ #if defined __hpux && !defined __GNUC__ static float zerof; static double zerod; static long double zerol; #else # define zerof 0.f # define zerod 0. # define zerol 0.L #endif int gl_isfinitef (float x) { return !isnanf (x) && x - x == zerof; } int gl_isfinited (double x) { return !isnand (x) && x - x == zerod; } int gl_isfinitel (long double x) { return !isnanl (x) && x - x == zerol; }