1 /* Convert string representation of a number into an intmax_t value. 2 Copyright (C) 1999, 2001, 2002, 2003 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 2, or (at your option) 7 any later version. 8 9 This program 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 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software Foundation, 16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 17 18 /* Written by Paul Eggert. */ 19 20 #if HAVE_CONFIG_H 21 # include <config.h> 22 #endif 23 24 #if HAVE_INTTYPES_H 25 # include <inttypes.h> 26 #elif HAVE_STDINT_H 27 # include <stdint.h> 28 #endif 29 30 #include <stdlib.h> 31 32 /* Verify a requirement at compile-time (unlike assert, which is runtime). */ 33 #define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; } 34 35 #ifdef UNSIGNED 36 # ifndef HAVE_DECL_STRTOULL 37 "this configure-time declaration test was not run" 38 # endif 39 # if !HAVE_DECL_STRTOULL && HAVE_UNSIGNED_LONG_LONG 40 unsigned long long strtoull (char const *, char **, int); 41 # endif 42 43 #else 44 45 # ifndef HAVE_DECL_STRTOLL 46 "this configure-time declaration test was not run" 47 # endif 48 # if !HAVE_DECL_STRTOLL && HAVE_UNSIGNED_LONG_LONG 49 long long strtoll (char const *, char **, int); 50 # endif 51 #endif 52 53 #ifdef UNSIGNED 54 # undef HAVE_LONG_LONG 55 # define HAVE_LONG_LONG HAVE_UNSIGNED_LONG_LONG 56 # define INT uintmax_t 57 # define strtoimax strtoumax 58 # define strtol strtoul 59 # define strtoll strtoull 60 #else 61 # define INT intmax_t 62 #endif 63 64 INT 65 strtoimax (char const *ptr, char **endptr, int base) 66 { 67 #if HAVE_LONG_LONG 68 verify (size_is_that_of_long_or_long_long, 69 (sizeof (INT) == sizeof (long) 70 || sizeof (INT) == sizeof (long long))); 71 72 if (sizeof (INT) != sizeof (long)) 73 return strtoll (ptr, endptr, base); 74 #else 75 verify (size_is_that_of_long, 76 sizeof (INT) == sizeof (long)); 77 #endif 78 79 return strtol (ptr, endptr, base); 80 } 81