aboutsummaryrefslogtreecommitdiff
path: root/wcsmbs/wcstold.c
blob: 89e8de8eb97dd122cc54f3e571bf0269714c6557 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The GNU C Library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include <math.h>

#ifndef __NO_LONG_DOUBLE_MATH
/* The actual implementation for all floating point sizes is in strtod.c.
   These macros tell it to produce the `long double' version, `wcstold'.  */

# define FLOAT		long double
# define FLT		LDBL
# ifdef USE_IN_EXTENDED_LOCALE_MODEL
#  define STRTOF	__wcstold_l
# else
#  define STRTOF	wcstold
# endif
# define MPN2FLOAT	__mpn_construct_long_double
# define FLOAT_HUGE_VAL	HUGE_VALL
# define USE_WIDE_CHAR	1
# define SET_MANTISSA(flt, mant) \
  do { union ieee854_long_double u;					      \
       u.d = (flt);							      \
       if ((mant & 0x7fffffffffffffffULL) == 0)				      \
	 mant = 0x4000000000000000ULL;					      \
       u.ieee.mantissa0 = (((mant) >> 32) & 0x7fffffff) | 0x80000000;	      \
       u.ieee.mantissa1 = (mant) & 0xffffffff;				      \
       (flt) = u.d;							      \
  } while (0)

# include <stdlib/strtod.c>
#else
/* There is no `long double' type, use the `double' implementations.  */
long double
__wcstold_internal (const wchar_t *nptr, wchar_t **endptr, int group)
{
  return __wcstod_internal (nptr, endptr, group);
}

long double
wcstold (const wchar_t *nptr, wchar_t **endptr)
{
  return __wcstod_internal (nptr, endptr, 0);
}
#endif