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

   1 /* Copyright (C) 1999, 2006 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 #define MPN2FLOAT       __mpn_construct_long_double
  41 #define FLOAT_HUGE_VAL  HUGE_VALL
  42 # define SET_MANTISSA(flt, mant) \
  43   do { union ibm_extended_long_double u;                                      \
  44        u.d = (flt);                                                           \
  45        if ((mant & 0xfffffffffffffULL) == 0)                                  \
  46          mant = 0x8000000000000ULL;                                           \
  47        u.ieee.mantissa0 = ((mant) >> 32) & 0xfffff;                           \
  48        u.ieee.mantissa1 = (mant) & 0xffffffff;                                \
  49        (flt) = u.d;                                                           \
  50   } while (0)
  51
  52 #include <strtod_l.c>
  53
  54 #ifdef __LONG_DOUBLE_MATH_OPTIONAL
  55 # include <math_ldbl_opt.h>
  56 # ifdef USE_WIDE_CHAR
  57 long_double_symbol (libc, __new_wcstold_l, wcstold_l);
  58 long_double_symbol (libc, ____new_wcstold_l, __wcstold_l);
  59 # else
  60 long_double_symbol (libc, __new_strtold_l, strtold_l);
  61 long_double_symbol (libc, ____new_strtold_l, __strtold_l);
  62 # endif
  63 #endif