diff options
author | An-Cheng Huang <ancheng@vyatta.com> | 2007-11-12 13:06:02 -0800 |
---|---|---|
committer | An-Cheng Huang <ancheng@vyatta.com> | 2007-11-12 13:06:02 -0800 |
commit | b7fc9e0f6d6105ba2203f219743d4b269415e84b (patch) | |
tree | ef6586dfc62798c2b17487b443864699aca55f31 /lib/sh/strtoumax.c | |
download | vyatta-bash-b7fc9e0f6d6105ba2203f219743d4b269415e84b.tar.gz vyatta-bash-b7fc9e0f6d6105ba2203f219743d4b269415e84b.zip |
initial import from bash_3.1dfsg.orig.tar.gz
Diffstat (limited to 'lib/sh/strtoumax.c')
-rw-r--r-- | lib/sh/strtoumax.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/lib/sh/strtoumax.c b/lib/sh/strtoumax.c new file mode 100644 index 0000000..e723d49 --- /dev/null +++ b/lib/sh/strtoumax.c @@ -0,0 +1,106 @@ +/* Convert string representation of a number into an uintmax_t value. + Copyright 1999-2005 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* Written by Paul Eggert. Modified by Chet Ramey for Bash. */ + +#if HAVE_CONFIG_H +# include <config.h> +#endif + +#if HAVE_INTTYPES_H +# include <inttypes.h> +#endif + +#if HAVE_STDLIB_H +# include <stdlib.h> +#endif + +#include <stdc.h> + +/* Verify a requirement at compile-time (unlike assert, which is runtime). */ +#define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; } + +#ifndef HAVE_DECL_STRTOUL +"this configure-time declaration test was not run" +#endif +#if !HAVE_DECL_STRTOUL +extern unsigned long strtoul __P((const char *, char **, int)); +#endif + +#ifndef HAVE_DECL_STRTOULL +"this configure-time declaration test was not run" +#endif +#if !HAVE_DECL_STRTOULL && HAVE_UNSIGNED_LONG_LONG +extern unsigned long long strtoull __P((const char *, char **, int)); +#endif + +#ifdef strtoumax +#undef strtoumax +#endif + +uintmax_t +strtoumax (ptr, endptr, base) + const char *ptr; + char **endptr; + int base; +{ +#if HAVE_UNSIGNED_LONG_LONG + verify (size_is_that_of_unsigned_long_or_unsigned_long_long, + (sizeof (uintmax_t) == sizeof (unsigned long) || + sizeof (uintmax_t) == sizeof (unsigned long long))); + + if (sizeof (uintmax_t) != sizeof (unsigned long)) + return (strtoull (ptr, endptr, base)); +#else + verify (size_is_that_of_unsigned_long, sizeof (uintmax_t) == sizeof (unsigned long)); +#endif + + return (strtoul (ptr, endptr, base)); +} + +#ifdef TESTING +# include <stdio.h> +int +main () +{ + char *p, *endptr; + uintmax_t x; +#if HAVE_UNSIGNED_LONG_LONG + unsigned long long y; +#endif + unsigned long z; + + printf ("sizeof uintmax_t: %d\n", sizeof (uintmax_t)); + +#if HAVE_UNSIGNED_LONG_LONG + printf ("sizeof unsigned long long: %d\n", sizeof (unsigned long long)); +#endif + printf ("sizeof unsigned long: %d\n", sizeof (unsigned long)); + + x = strtoumax("42", &endptr, 10); +#if HAVE_LONG_LONG + y = strtoull("42", &endptr, 10); +#else + y = 0; +#endif + z = strtoul("42", &endptr, 10); + + printf ("%llu %llu %lu\n", x, y, z); + + exit (0); +} +#endif |