mesa/src/util/strtod.cpp
Chia-I Wu 61c3d49388 util: initialize locale_t with a static object
_mesa_strtod and _mesa_strtof may be called from multiple threads.  They need
to be thread-safe.

v2: platform checks are now done in configure.ac

Signed-off-by: Chia-I Wu <olv@lunarg.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2014-10-30 02:26:19 -07:00

75 lines
2.1 KiB
C++

/*
* Copyright 2010 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdlib.h>
#ifdef _GNU_SOURCE
#include <locale.h>
#ifdef HAVE_XLOCALE_H
#include <xlocale.h>
#endif
#endif
#include "strtod.h"
#if defined(_GNU_SOURCE) && defined(HAVE_XLOCALE_H)
static struct locale_initializer {
locale_initializer() { loc = newlocale(LC_CTYPE_MASK, "C", NULL); }
locale_t loc;
} loc_init;
#endif
/**
* Wrapper around strtod which uses the "C" locale so the decimal
* point is always '.'
*/
double
_mesa_strtod(const char *s, char **end)
{
#if defined(_GNU_SOURCE) && defined(HAVE_XLOCALE_H)
return strtod_l(s, end, loc_init.loc);
#else
return strtod(s, end);
#endif
}
/**
* Wrapper around strtof which uses the "C" locale so the decimal
* point is always '.'
*/
float
_mesa_strtof(const char *s, char **end)
{
#if defined(_GNU_SOURCE) && defined(HAVE_XLOCALE_H)
return strtof_l(s, end, loc_init.loc);
#elif defined(HAVE_STRTOF)
return strtof(s, end);
#else
return (float) strtod(s, end);
#endif
}