diff options
Diffstat (limited to 'lib/sh/strtoimax.c')
-rw-r--r-- | lib/sh/strtoimax.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/lib/sh/strtoimax.c b/lib/sh/strtoimax.c new file mode 100644 index 0000000..676e02e --- /dev/null +++ b/lib/sh/strtoimax.c @@ -0,0 +1,113 @@ +/* strtoimax - convert string representation of a number into an intmax_t value. */ + +/* Copyright 1999-2020 Free Software Foundation, Inc. + + This file is part of GNU Bash, the Bourne Again SHell. + + Bash 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 3 of the License, or + (at your option) any later version. + + Bash 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 Bash. If not, see <http://www.gnu.org/licenses/>. +*/ + +/* 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_STDINT_H +# include <stdint.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_STRTOL +"this configure-time declaration test was not run" +#endif +#if !HAVE_DECL_STRTOL +extern long strtol PARAMS((const char *, char **, int)); +#endif + +#ifndef HAVE_DECL_STRTOLL +"this configure-time declaration test was not run" +#endif +#if !HAVE_DECL_STRTOLL && HAVE_LONG_LONG +extern long long strtoll PARAMS((const char *, char **, int)); +#endif + +#ifdef strtoimax +#undef strtoimax +#endif + +intmax_t +strtoimax (ptr, endptr, base) + const char *ptr; + char **endptr; + int base; +{ +#if HAVE_LONG_LONG + verify(size_is_that_of_long_or_long_long, + (sizeof (intmax_t) == sizeof (long) || + sizeof (intmax_t) == sizeof (long long))); + + if (sizeof (intmax_t) != sizeof (long)) + return (strtoll (ptr, endptr, base)); +#else + verify (size_is_that_of_long, sizeof (intmax_t) == sizeof (long)); +#endif + + return (strtol (ptr, endptr, base)); +} + +#ifdef TESTING +# include <stdio.h> +int +main () +{ + char *p, *endptr; + intmax_t x; +#if HAVE_LONG_LONG + long long y; +#endif + long z; + + printf ("sizeof intmax_t: %d\n", sizeof (intmax_t)); + +#if HAVE_LONG_LONG + printf ("sizeof long long: %d\n", sizeof (long long)); +#endif + printf ("sizeof long: %d\n", sizeof (long)); + + x = strtoimax("42", &endptr, 10); +#if HAVE_LONG_LONG + y = strtoll("42", &endptr, 10); +#else + y = -1; +#endif + z = strtol("42", &endptr, 10); + + printf ("%lld %lld %ld\n", x, y, z); + + exit (0); +} +#endif |