| 1 | /* Convert string representation of a number into an uintmax_t value.
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| 2 | Copyright 1999 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. */
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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 | #ifndef PARAMS
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| 33 | # if defined PROTOTYPES || defined __STDC__
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| 34 | # define PARAMS(Args) Args
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| 35 | # else
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| 36 | # define PARAMS(Args) ()
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| 37 | # endif
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| 38 | #endif
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| 39 |
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| 40 | #ifndef HAVE_DECL_STRTOUL
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| 41 | "this configure-time declaration test was not run"
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| 42 | #endif
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| 43 | #if !HAVE_DECL_STRTOUL
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| 44 | unsigned long strtoul PARAMS ((char const *, char **, int));
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| 45 | #endif
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| 46 |
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| 47 | #ifndef HAVE_DECL_STRTOULL
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| 48 | "this configure-time declaration test was not run"
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| 49 | #endif
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| 50 | #if !HAVE_DECL_STRTOULL && HAVE_UNSIGNED_LONG_LONG
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| 51 | unsigned long long strtoull PARAMS ((char const *, char **, int));
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| 52 | #endif
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| 53 |
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| 54 | uintmax_t
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| 55 | strtoumax (char const *ptr, char **endptr, int base)
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| 56 | {
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| 57 | #define USE_IF_EQUIVALENT(function) \
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| 58 | if (sizeof (uintmax_t) == sizeof function (ptr, endptr, base)) \
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| 59 | return function (ptr, endptr, base);
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| 60 |
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| 61 | #if HAVE_UNSIGNED_LONG_LONG
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| 62 | USE_IF_EQUIVALENT (strtoull)
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| 63 | #endif
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| 64 |
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| 65 | USE_IF_EQUIVALENT (strtoul)
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| 66 |
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| 67 | abort ();
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| 68 | }
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| 69 |
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| 70 | #ifdef TESTING
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| 71 | # include <stdio.h>
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| 72 | int
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| 73 | main ()
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| 74 | {
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| 75 | char *p, *endptr;
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| 76 | printf ("sizeof uintmax_t: %d\n", sizeof (uintmax_t));
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| 77 | printf ("sizeof strtoull(): %d\n", sizeof strtoull(p, &endptr, 10));
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| 78 | printf ("sizeof strtoul(): %d\n", sizeof strtoul(p, &endptr, 10));
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| 79 | exit (0);
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| 80 | }
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| 81 | #endif
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