1 /* $NetBSD: strtoimax.c,v 1.1.1.1 2016/01/13 03:15:30 christos Exp $ */ 2 3 /* Convert string representation of a number into an intmax_t value. 4 5 Copyright (C) 1999, 2001 Free Software Foundation, Inc. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2, or (at your option) 10 any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software Foundation, 19 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 20 21 /* Written by Paul Eggert. */ 22 23 #if HAVE_CONFIG_H 24 # include <config.h> 25 #endif 26 27 #if HAVE_INTTYPES_H 28 # include <inttypes.h> 29 #endif 30 31 #if HAVE_STDLIB_H 32 # include <stdlib.h> 33 #endif 34 35 #ifndef PARAMS 36 # if defined PROTOTYPES || defined __STDC__ 37 # define PARAMS(Args) Args 38 # else 39 # define PARAMS(Args) () 40 # endif 41 #endif 42 43 /* Verify a requirement at compile-time (unlike assert, which is runtime). */ 44 #define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; } 45 46 #ifdef UNSIGNED 47 # ifndef HAVE_DECL_STRTOUL 48 "this configure-time declaration test was not run" 49 # endif 50 # if !HAVE_DECL_STRTOUL 51 unsigned long strtoul PARAMS ((char const *, char **, int)); 52 # endif 53 # ifndef HAVE_DECL_STRTOULL 54 "this configure-time declaration test was not run" 55 # endif 56 # if !HAVE_DECL_STRTOULL && HAVE_UNSIGNED_LONG_LONG 57 unsigned long long strtoull PARAMS ((char const *, char **, int)); 58 # endif 59 60 #else 61 62 # ifndef HAVE_DECL_STRTOL 63 "this configure-time declaration test was not run" 64 # endif 65 # if !HAVE_DECL_STRTOL 66 long strtol PARAMS ((char const *, char **, int)); 67 # endif 68 # ifndef HAVE_DECL_STRTOLL 69 "this configure-time declaration test was not run" 70 # endif 71 # if !HAVE_DECL_STRTOLL && HAVE_UNSIGNED_LONG_LONG 72 long long strtoll PARAMS ((char const *, char **, int)); 73 # endif 74 #endif 75 76 #ifdef UNSIGNED 77 # undef HAVE_LONG_LONG 78 # define HAVE_LONG_LONG HAVE_UNSIGNED_LONG_LONG 79 # define INT uintmax_t 80 # define strtoimax strtoumax 81 # define strtol strtoul 82 # define strtoll strtoull 83 #else 84 # define INT intmax_t 85 #endif 86 87 INT 88 strtoimax (char const *ptr, char **endptr, int base) 89 { 90 #if HAVE_LONG_LONG 91 verify (size_is_that_of_long_or_long_long, 92 (sizeof (INT) == sizeof (long) 93 || sizeof (INT) == sizeof (long long))); 94 95 if (sizeof (INT) != sizeof (long)) 96 return strtoll (ptr, endptr, base); 97 #else 98 verify (size_is_that_of_long, 99 sizeof (INT) == sizeof (long)); 100 #endif 101 102 return strtol (ptr, endptr, base); 103 } 104