stdlib/strtold.c

   1 /* Read decimal floating point numbers.
   2    This file is part of the GNU C Library.
   3    Copyright (C) 1995-2016 Free Software Foundation, Inc.
   4    Contributed by Ulrich Drepper <drepper@gnu.org>, 1995.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 /* The actual implementation for all floating point sizes is in strtod.c.
  21    These macros tell it to produce the `float' version, `strtof'.  */
  22
  23 #include <bits/wordsize.h>
  24
  25 #ifdef __LONG_DOUBLE_MATH_OPTIONAL
  26 # include <wchar.h>
  27 # define NEW(x) NEW1(x)
  28 # define NEW1(x) __new_##x
  29 long double ____new_strtold_internal (const char *, char **, int);
  30 long double __new_strtold (const char *, char **);
  31 long double ____new_wcstold_internal (const wchar_t *, wchar_t **, int);
  32 long double __new_wcstold (const wchar_t *, wchar_t **);
  33 libc_hidden_proto (____new_strtold_internal)
  34 libc_hidden_proto (____new_wcstold_internal)
  35 libc_hidden_proto (__new_strtold)
  36 libc_hidden_proto (__new_wcstold)
  37 #else
  38 # define NEW(x) x
  39 #endif
  40
  41 #define FLOAT           long double
  42 #define FLT             LDBL
  43 #ifdef USE_WIDE_CHAR
  44 # define STRTOF         NEW (wcstold)
  45 # define STRTOF_L       __wcstold_l
  46 #else
  47 # define STRTOF         NEW (strtold)
  48 # define STRTOF_L       __strtold_l
  49 #endif
  50
  51 #include "strtod.c"
  52
  53 #ifdef __LONG_DOUBLE_MATH_OPTIONAL
  54 # include <math_ldbl_opt.h>
  55 # ifdef USE_WIDE_CHAR
  56 long_double_symbol (libc, __new_wcstold, wcstold);
  57 long_double_symbol (libc, ____new_wcstold_internal, __wcstold_internal);
  58 libc_hidden_ver (____new_wcstold_internal, __wcstold_internal)
  59 # else
  60 long_double_symbol (libc, __new_strtold, strtold);
  61 long_double_symbol (libc, ____new_strtold_internal, __strtold_internal);
  62 libc_hidden_ver (____new_strtold_internal, __strtold_internal)
  63 # endif
  64 #endif