1  /* Read decimal floating point numbers.
       2     This file is part of the GNU C Library.
       3     Copyright (C) 1995-2023 Free Software Foundation, Inc.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  /* The actual implementation for all floating point sizes is in strtod.c.
      20     These macros tell it to produce the `float' version, `strtof'.  */
      21  
      22  #include <bits/floatn.h>
      23  #include <bits/long-double.h>
      24  
      25  #if __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128
      26  # define strtof128 __hide_strtof128
      27  # define wcstof128 __hide_wcstof128
      28  #endif
      29  #if __HAVE_FLOAT64X_LONG_DOUBLE
      30  # define strtof64x __hide_strtof64x
      31  # define wcstof64x __hide_wcstof64x
      32  #endif
      33  
      34  #ifdef __LONG_DOUBLE_MATH_OPTIONAL
      35  # include <wchar.h>
      36  # define NEW(x) NEW1(x)
      37  # define NEW1(x) __new_##x
      38  long double ____new_strtold_internal (const char *, char **, int);
      39  long double __new_strtold (const char *, char **);
      40  long double ____new_wcstold_internal (const wchar_t *, wchar_t **, int);
      41  long double __new_wcstold (const wchar_t *, wchar_t **);
      42  libc_hidden_proto (____new_strtold_internal)
      43  libc_hidden_proto (____new_wcstold_internal)
      44  libc_hidden_proto (__new_strtold)
      45  libc_hidden_proto (__new_wcstold)
      46  #else
      47  # define NEW(x) x
      48  #endif
      49  
      50  #define	FLOAT		long double
      51  #define	FLT		LDBL
      52  #ifdef USE_WIDE_CHAR
      53  # define STRTOF		NEW (wcstold)
      54  # define STRTOF_L	__wcstold_l
      55  #else
      56  # define STRTOF		NEW (strtold)
      57  # define STRTOF_L	__strtold_l
      58  #endif
      59  
      60  #include "strtod.c"
      61  
      62  #ifdef __LONG_DOUBLE_MATH_OPTIONAL
      63  # include <math_ldbl_opt.h>
      64  # ifdef USE_WIDE_CHAR
      65  long_double_symbol (libc, __new_wcstold, wcstold);
      66  long_double_symbol (libc, ____new_wcstold_internal, __wcstold_internal);
      67  libc_hidden_ver (____new_wcstold_internal, __wcstold_internal)
      68  # else
      69  long_double_symbol (libc, __new_strtold, strtold);
      70  long_double_symbol (libc, ____new_strtold_internal, __strtold_internal);
      71  libc_hidden_ver (____new_strtold_internal, __strtold_internal)
      72  # endif
      73  #endif
      74  
      75  #if __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128
      76  # undef strtof128
      77  # undef wcstof128
      78  # ifdef USE_WIDE_CHAR
      79  weak_alias (NEW (wcstold), wcstof128)
      80  # else
      81  weak_alias (NEW (strtold), strtof128)
      82  # endif
      83  #endif
      84  
      85  #if __HAVE_FLOAT64X_LONG_DOUBLE
      86  # undef strtof64x
      87  # undef wcstof64x
      88  # ifdef USE_WIDE_CHAR
      89  weak_alias (NEW (wcstold), wcstof64x)
      90  # else
      91  weak_alias (NEW (strtold), strtof64x)
      92  # endif
      93  #endif