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

   1 /* Copyright (C) 1999-2015 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, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <math.h>
  19 #include <stdlib.h>
  20 #include <wchar.h>
  21 #include <xlocale.h>
  22
  23 /* The actual implementation for all floating point sizes is in strtod.c.
  24    These macros tell it to produce the `long double' version, `strtold'.  */
  25
  26 #define FLOAT           long double
  27 #define FLT             LDBL
  28 #ifdef USE_WIDE_CHAR
  29 extern long double ____new_wcstold_l (const wchar_t *, wchar_t **, __locale_t);
  30 # define STRTOF         __new_wcstold_l
  31 # define __STRTOF       ____new_wcstold_l
  32 # define ____STRTOF_INTERNAL ____wcstold_l_internal
  33 #else
  34 extern long double ____new_strtold_l (const char *, char **, __locale_t);
  35 # define STRTOF         __new_strtold_l
  36 # define __STRTOF       ____new_strtold_l
  37 # define ____STRTOF_INTERNAL ____strtold_l_internal
  38 #endif
  39 extern __typeof (__STRTOF) STRTOF;
  40 libc_hidden_proto (__STRTOF)
  41 libc_hidden_proto (STRTOF)
  42 #define MPN2FLOAT       __mpn_construct_long_double
  43 #define FLOAT_HUGE_VAL  HUGE_VALL
  44 # define SET_MANTISSA(flt, mant) \
  45   do { union ibm_extended_long_double u;                                      \
  46        u.ld = (flt);                                                          \
  47        u.d[0].ieee_nan.mantissa0 = (mant) >> 32;                              \
  48        u.d[0].ieee_nan.mantissa1 = (mant);                                    \
  49        if ((u.d[0].ieee.mantissa0 | u.d[0].ieee.mantissa1) != 0)              \
  50          (flt) = u.ld;                                                        \
  51   } while (0)
  52
  53 #include <strtod_l.c>
  54
  55 #ifdef __LONG_DOUBLE_MATH_OPTIONAL
  56 # include <math_ldbl_opt.h>
  57 # ifdef USE_WIDE_CHAR
  58 weak_alias (____new_wcstold_l, ___new_wcstold_l);
  59 long_double_symbol (libc, ___new_wcstold_l, wcstold_l);
  60 long_double_symbol (libc, ____new_wcstold_l, __wcstold_l);
  61 # else
  62 weak_alias (____new_strtold_l, ___new_strtold_l);
  63 long_double_symbol (libc, ___new_strtold_l, strtold_l);
  64 long_double_symbol (libc, ____new_strtold_l, __strtold_l);
  65 # endif
  66 #endif