sysdeps/ieee754/ldbl-128/strtold_l.c

   1 /* Copyright (C) 1999-2014 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
  20 /* The actual implementation for all floating point sizes is in strtod.c.
  21    These macros tell it to produce the `long double' version, `strtold'.  */
  22
  23 #define FLOAT           long double
  24 #define FLT             LDBL
  25 #ifdef USE_WIDE_CHAR
  26 # define STRTOF         wcstold_l
  27 # define __STRTOF       __wcstold_l
  28 #else
  29 # define STRTOF         strtold_l
  30 # define __STRTOF       __strtold_l
  31 #endif
  32 #define MPN2FLOAT       __mpn_construct_long_double
  33 #define FLOAT_HUGE_VAL  HUGE_VALL
  34 #define SET_MANTISSA(flt, mant) \
  35   do { union ieee854_long_double u;                                           \
  36        u.d = (flt);                                                           \
  37        u.ieee_nan.mantissa0 = 0;                                              \
  38        u.ieee_nan.mantissa1 = 0;                                              \
  39        u.ieee_nan.mantissa2 = (mant) >> 32;                                   \
  40        u.ieee_nan.mantissa3 = (mant);                                         \
  41        if ((u.ieee.mantissa0 | u.ieee.mantissa1                               \
  42             | u.ieee.mantissa2 | u.ieee.mantissa3) != 0)                      \
  43          (flt) = u.d;                                                         \
  44   } while (0)
  45
  46 #include <strtod_l.c>