strtoumax.c revision 4fd606d1f5abe38e1f42c38de1d2e895166bd0f4
/* $NetBSD: strtoumax.c,v 1.1 2006/04/22 15:33:33 thorpej Exp $ */
/*
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <LibConfig.h>
#include <sys/EfiCdefs.h>
#if !defined(_KERNEL) && !defined(_STANDALONE)
#if 0
#else
__RCSID("$NetBSD: strtoumax.c,v 1.1 2006/04/22 15:33:33 thorpej Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <inttypes.h>
#include <stddef.h>
#ifdef __weak_alias
#endif
#else /* !_KERNEL && !_STANDALONE */
#endif /* !_KERNEL && !_STANDALONE */
/*
* Convert a string to an uintmax_t.
*
* Ignores `locale' stuff. Assumes that the upper and lower case
* alphabets and digits are each contiguous.
*/
{
const char *s;
int c;
/* endptr may be NULL */
/*
* See strtol for comments as to the logic used.
*/
s = nptr;
do {
c = (unsigned char) *s++;
} while (isspace(c));
if (c == '-') {
neg = 1;
c = *s++;
} else {
neg = 0;
if (c == '+')
c = *s++;
}
c == '0' && (*s == 'x' || *s == 'X')) {
c = s[1];
s += 2;
base = 16;
}
if (base == 0)
if (isdigit(c))
c -= '0';
else if (isalpha(c)) {
#if defined(_KERNEL) || defined(_STANDALONE)
#else
#endif
} else
break;
if (c >= base)
break;
if (any < 0)
continue;
#if defined(_KERNEL) || defined(_STANDALONE)
if (endptr)
return UINTMAX_MAX;
#else
any = -1;
acc = UINTMAX_MAX;
#endif
} else {
any = 1;
acc += c;
}
}
if (endptr != 0)
return (acc);
}