| 1 | /* Convert string representation of a number into an intmax_t value.
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| 2 | Copyright 1999-2005 Free Software Foundation, Inc.
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| 3 |
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| 4 | This program is free software; you can redistribute it and/or modify
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| 5 | it under the terms of the GNU General Public License as published by
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| 6 | the Free Software Foundation; either version 2, or (at your option)
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| 7 | any later version.
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| 8 |
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| 9 | This program is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 12 | GNU General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU General Public License
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| 15 | along with this program; if not, write to the Free Software Foundation,
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| 16 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 17 |
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| 18 | /* Written by Paul Eggert. Modified by Chet Ramey for Bash. */
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| 19 |
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| 20 | #if HAVE_CONFIG_H
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| 21 | # include <config.h>
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| 22 | #endif
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| 23 |
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| 24 | #if HAVE_INTTYPES_H
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| 25 | # include <inttypes.h>
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| 26 | #endif
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| 27 |
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| 28 | #if HAVE_STDLIB_H
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| 29 | # include <stdlib.h>
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| 30 | #endif
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| 31 |
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| 32 | #include <stdc.h>
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| 33 |
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| 34 | /* Verify a requirement at compile-time (unlike assert, which is runtime). */
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| 35 | #define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; }
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| 36 |
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| 37 | #ifndef HAVE_DECL_STRTOL
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| 38 | "this configure-time declaration test was not run"
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| 39 | #endif
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| 40 | #if !HAVE_DECL_STRTOL
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| 41 | extern long strtol __P((const char *, char **, int));
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| 42 | #endif
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| 43 |
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| 44 | #ifndef HAVE_DECL_STRTOLL
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| 45 | "this configure-time declaration test was not run"
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| 46 | #endif
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| 47 | #if !HAVE_DECL_STRTOLL && HAVE_LONG_LONG
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| 48 | extern long long strtoll __P((const char *, char **, int));
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| 49 | #endif
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| 50 |
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| 51 | #ifdef strtoimax
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| 52 | #undef strtoimax
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| 53 | #endif
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| 54 |
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| 55 | intmax_t
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| 56 | strtoimax (ptr, endptr, base)
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| 57 | const char *ptr;
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| 58 | char **endptr;
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| 59 | int base;
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| 60 | {
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| 61 | #if HAVE_LONG_LONG
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| 62 | verify(size_is_that_of_long_or_long_long,
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| 63 | (sizeof (intmax_t) == sizeof (long) ||
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| 64 | sizeof (intmax_t) == sizeof (long long)));
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| 65 |
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| 66 | if (sizeof (intmax_t) != sizeof (long))
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| 67 | return (strtoll (ptr, endptr, base));
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| 68 | #else
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| 69 | verify (size_is_that_of_long, sizeof (intmax_t) == sizeof (long));
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| 70 | #endif
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| 71 |
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| 72 | return (strtol (ptr, endptr, base));
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| 73 | }
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| 74 |
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| 75 | #ifdef TESTING
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| 76 | # include <stdio.h>
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| 77 | int
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| 78 | main ()
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| 79 | {
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| 80 | char *p, *endptr;
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| 81 | intmax_t x;
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| 82 | #if HAVE_LONG_LONG
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| 83 | long long y;
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| 84 | #endif
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| 85 | long z;
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| 86 |
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| 87 | printf ("sizeof intmax_t: %d\n", sizeof (intmax_t));
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| 88 |
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| 89 | #if HAVE_LONG_LONG
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| 90 | printf ("sizeof long long: %d\n", sizeof (long long));
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| 91 | #endif
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| 92 | printf ("sizeof long: %d\n", sizeof (long));
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| 93 |
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| 94 | x = strtoimax("42", &endptr, 10);
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| 95 | #if HAVE_LONG_LONG
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| 96 | y = strtoll("42", &endptr, 10);
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| 97 | #else
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| 98 | y = -1;
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| 99 | #endif
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| 100 | z = strtol("42", &endptr, 10);
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| 101 |
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| 102 | printf ("%lld %lld %ld\n", x, y, z);
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| 103 |
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| 104 | exit (0);
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| 105 | }
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| 106 | #endif
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