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_nan.mantissa0 = 0;                \
  37        u.ieee_nan.mantissa1 = 0;                \
  38        u.ieee_nan.mantissa2 = (mant) >> 32;     \
  39        u.ieee_nan.mantissa3 = (mant);           \
  40        u.ieee_nan.quiet_nan = 1;                \
  41        (flt) = u.value;                         \
  42   } while (0)
  43
  44 static inline __attribute__((__always_inline__))
  45 __float128 ____strtoflt128_internal (const char *, char **, int);
  46
  47 #include "strtod_l.c"
  48
  49 __float128
  50 strtoflt128 (const char *nptr, char **endptr)
  51 {
  52   return ____STRTOF_INTERNAL (nptr, endptr, 0);
  53 }