libquadmath/strtod/strtoflt128.c

   1 /* Copyright (C) 1999, 2004 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 /* The actual implementation for all floating point sizes is in strtod.c.
  20    These macros tell it to produce the `__float128' version, `strtold'.  */
  21
  22 #define FLOAT           __float128
  23 #define FLT             FLT128
  24 #ifdef USE_WIDE_CHAR
  25 # define STRTOF         wcstoflt128
  26 # define __STRTOF       __wcstoflt128
  27 #else
  28 # define STRTOF         strtoflt128
  29 # define __STRTOF       __strtoflt128
  30 #endif
  31 #define MPN2FLOAT       mpn_construct_float128
  32 #define FLOAT_HUGE_VAL  HUGE_VALQ
  33 #define SET_MANTISSA(flt, mant) \
  34   do { ieee854_float128 u;                                                    \
  35        u.value = (flt);                                                       \
  36        u.ieee.mant_high = 0x800000000000ULL;                                  \
  37        u.ieee.mant_low = mant;                                                \
  38        (flt) = u.value;                                                       \
  39   } while (0)
  40
  41 static inline __attribute__((__always_inline__))
  42 __float128 ____strtoflt128_internal (const char *, char **, int);
  43
  44 #include "strtod_l.c"
  45
  46 __float128
  47 strtoflt128 (const char *nptr, char **endptr)
  48 {
  49   return ____STRTOF_INTERNAL (nptr, endptr, 0);
  50 }