sysdeps/ieee754/ldbl-64-128/strtold_l.c

   1 /* Copyright (C) 1999, 2006, 2007 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <math.h>
  20 #include <stdlib.h>
  21 #include <wchar.h>
  22 #include <xlocale.h>
  23
  24 /* The actual implementation for all floating point sizes is in strtod.c.
  25    These macros tell it to produce the `long double' version, `strtold'.  */
  26
  27 #define FLOAT           long double
  28 #define FLT             LDBL
  29 #ifdef USE_WIDE_CHAR
  30 extern long double ____new_wcstold_l (const wchar_t *, wchar_t **, __locale_t);
  31 # define STRTOF         __new_wcstold_l
  32 # define __STRTOF       ____new_wcstold_l
  33 # define ____STRTOF_INTERNAL ____wcstold_l_internal
  34 #else
  35 extern long double ____new_strtold_l (const char *, char **, __locale_t);
  36 # define STRTOF         __new_strtold_l
  37 # define __STRTOF       ____new_strtold_l
  38 # define ____STRTOF_INTERNAL ____strtold_l_internal
  39 #endif
  40 extern __typeof (__STRTOF) STRTOF;
  41 libc_hidden_proto (__STRTOF)
  42 libc_hidden_proto (STRTOF)
  43 #define MPN2FLOAT       __mpn_construct_long_double
  44 #define FLOAT_HUGE_VAL  HUGE_VALL
  45 #define SET_MANTISSA(flt, mant) \
  46   do { union ieee854_long_double u;                                           \
  47        u.d = (flt);                                                           \
  48        u.ieee.mantissa0 = 0x8000;                                             \
  49        u.ieee.mantissa1 = 0;                                                  \
  50        u.ieee.mantissa2 = ((mant) >> 32);                                     \
  51        u.ieee.mantissa3 = (mant) & 0xffffffff;                                \
  52        (flt) = u.d;                                                           \
  53   } while (0)
  54
  55 #include <strtod_l.c>
  56
  57 #ifdef __LONG_DOUBLE_MATH_OPTIONAL
  58 # include <math_ldbl_opt.h>
  59 # ifdef USE_WIDE_CHAR
  60 weak_alias (____new_wcstold_l, ___new_wcstold_l);
  61 long_double_symbol (libc, ___new_wcstold_l, wcstold_l);
  62 long_double_symbol (libc, ____new_wcstold_l, __wcstold_l);
  63 # else
  64 weak_alias (____new_strtold_l, ___new_strtold_l);
  65 long_double_symbol (libc, ___new_strtold_l, strtold_l);
  66 long_double_symbol (libc, ____new_strtold_l, __strtold_l);
  67 # endif
  68 #endif