root/lib/strtoimax.c

DEFINITIONS

1. Strtoimax

     1 /* Convert string representation of a number into an intmax_t value.
     2 
     3    Copyright (C) 1999, 2001-2004, 2006, 2009-2023 Free Software Foundation,
     4    Inc.
     5 
     6    This file is free software: you can redistribute it and/or modify
     7    it under the terms of the GNU Lesser General Public License as
     8    published by the Free Software Foundation, either version 3 of the
     9    License, or (at your option) any later version.
    10 
    11    This file 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
    14    GNU Lesser General Public License for more details.
    15 
    16    You should have received a copy of the GNU Lesser General Public License
    17    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
    18 
    19 /* Written by Paul Eggert. */
    20 
    21 #include <config.h>
    22 
    23 /* Verify interface.  */
    24 #include <inttypes.h>
    25 
    26 #include <stdlib.h>
    27 
    28 #ifdef UNSIGNED
    29 # ifndef HAVE_DECL_STRTOULL
    30 "this configure-time declaration test was not run"
    31 # endif
    32 # if !HAVE_DECL_STRTOULL
    33 unsigned long long int strtoull (char const *, char **, int);
    34 # endif
    35 
    36 #else
    37 
    38 # ifndef HAVE_DECL_STRTOLL
    39 "this configure-time declaration test was not run"
    40 # endif
    41 # if !HAVE_DECL_STRTOLL
    42 long long int strtoll (char const *, char **, int);
    43 # endif
    44 #endif
    45 
    46 #ifdef UNSIGNED
    47 # define Int uintmax_t
    48 # define Strtoimax strtoumax
    49 # define Strtol strtoul
    50 # define Strtoll strtoull
    51 # define Unsigned unsigned
    52 #else
    53 # define Int intmax_t
    54 # define Strtoimax strtoimax
    55 # define Strtol strtol
    56 # define Strtoll strtoll
    57 # define Unsigned
    58 #endif
    59 
    60 Int
    61 Strtoimax (char const *ptr, char **endptr, int base)
    62 {
    63   static_assert (sizeof (Int) == sizeof (Unsigned long int)
    64                  || sizeof (Int) == sizeof (Unsigned long long int));
    65 
    66   if (sizeof (Int) != sizeof (Unsigned long int))
    67     return Strtoll (ptr, endptr, base);
    68 
    69   return Strtol (ptr, endptr, base);
    70 }