stdlib/strtol.c

   1 /* Convert string representation of a number into an integer value.
   2    Copyright (C) 1991,92,94,95,96,97,98,99,2000,2001,2002,2003,2004,2007
   3         Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <stdlib.h>
  22 #include <wchar.h>
  23 #include <locale/localeinfo.h>
  24
  25 #ifndef UNSIGNED
  26 # define UNSIGNED 0
  27 # define INT LONG int
  28 #else
  29 # define INT unsigned LONG int
  30 #endif
  31
  32 #if UNSIGNED
  33 # ifdef USE_WIDE_CHAR
  34 #  ifdef QUAD
  35 #   define strtol wcstoull
  36 #   define __strtol_l __wcstoull_l
  37 #  else
  38 #   define strtol wcstoul
  39 #   define __strtol_l __wcstoul_l
  40 #  endif
  41 # else
  42 #  ifdef QUAD
  43 #   define strtol strtoull
  44 #   define __strtol_l __strtoull_l
  45 #  else
  46 #   define strtol strtoul
  47 #   define __strtol_l __strtoul_l
  48 #  endif
  49 # endif
  50 #else
  51 # ifdef USE_WIDE_CHAR
  52 #  ifdef QUAD
  53 #   define strtol wcstoll
  54 #   define __strtol_l __wcstoll_l
  55 #  else
  56 #   define strtol wcstol
  57 #   define __strtol_l __wcstol_l
  58 #  endif
  59 # else
  60 #  ifdef QUAD
  61 #   define strtol strtoll
  62 #   define __strtol_l __strtoll_l
  63 #  endif
  64 # endif
  65 #endif
  66
  67
  68 /* If QUAD is defined, we are defining `strtoll' or `strtoull',
  69    operating on `long long int's.  */
  70 #ifdef QUAD
  71 # define LONG long long
  72 #else
  73 # define LONG long
  74 #endif
  75
  76
  77 #ifdef USE_WIDE_CHAR
  78 # define STRING_TYPE wchar_t
  79 #else
  80 # define STRING_TYPE char
  81 #endif
  82
  83
  84 #define INTERNAL(X) INTERNAL1(X)
  85 #define INTERNAL1(X) __##X##_internal
  86
  87
  88 extern INT INTERNAL (__strtol_l) (const STRING_TYPE *, STRING_TYPE **, int,
  89                                   int, __locale_t);
  90
  91
  92 INT
  93 INTERNAL (strtol) (nptr, endptr, base, group)
  94      const STRING_TYPE *nptr;
  95      STRING_TYPE **endptr;
  96      int base;
  97      int group;
  98 {
  99   return INTERNAL (__strtol_l) (nptr, endptr, base, group, _NL_CURRENT_LOCALE);
 100 }
 101 libc_hidden_def (INTERNAL (strtol))
 102
 103
 104 INT
 105 strtol (nptr, endptr, base)
 106      const STRING_TYPE *nptr;
 107      STRING_TYPE **endptr;
 108      int base;
 109 {
 110   return INTERNAL (__strtol_l) (nptr, endptr, base, 0, _NL_CURRENT_LOCALE);
 111 }
 112 libc_hidden_def (strtol)