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📄 bcd.c(1.67 KB)
📄 bcmp.c(4.2 KB)
📄 bcopy.c(4.13 KB)
📄 bsearch.c(3.07 KB)
📄 cmpdi2.c(2.18 KB)
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📄 explicit_bzero.c(512 B)
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📄 iconv_converter_if.m(2.11 KB)
📄 iconv_ucs.c(12.47 KB)
📄 iconv_xlat.c(3.39 KB)
📄 iconv_xlat16.c(8.47 KB)
📄 inet_aton.c(3.41 KB)
📄 inet_ntoa.c(1.8 KB)
📄 inet_ntop.c(4.94 KB)
📄 inet_pton.c(5.21 KB)
📄 jenkins_hash.c(16.09 KB)
📄 lshrdi3.c(2.24 KB)
📄 mcount.c(8.52 KB)
📄 memcchr.c(3.27 KB)
📄 memchr.c(1.99 KB)
📄 memcmp.c(2 KB)
📄 memmem.c(2.39 KB)
📄 memset.c(1.61 KB)
📄 moddi3.c(2.22 KB)
📄 murmur3_32.c(3.4 KB)
📄 qdivrem.c(7.47 KB)
📄 qsort.c(5.95 KB)
📄 qsort_r.c(156 B)
📄 quad.h(4.16 KB)
📄 random.c(1.92 KB)
📄 scanc.c(1.93 KB)
📄 strcasecmp.c(2.52 KB)
📄 strcasestr.c(2.4 KB)
📄 strcat.c(1.83 KB)
📄 strchr.c(1.88 KB)
📄 strchrnul.c(1.57 KB)
📄 strcmp.c(1.96 KB)
📄 strcpy.c(1.82 KB)
📄 strcspn.c(2.36 KB)
📄 strdup.c(2.15 KB)
📄 strlcat.c(2.56 KB)
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📄 strlen.c(3.77 KB)
📄 strncat.c(2.23 KB)
📄 strncmp.c(1.92 KB)
📄 strncpy.c(2.15 KB)
📄 strndup.c(1.98 KB)
📄 strnlen.c(1.61 KB)
📄 strrchr.c(1.89 KB)
📄 strsep.c(2.63 KB)
📄 strspn.c(2.32 KB)
📄 strstr.c(2.11 KB)
📄 strtol.c(4.06 KB)
📄 strtoq.c(4.09 KB)
📄 strtoul.c(3.13 KB)
📄 strtouq.c(3.08 KB)
📄 strvalid.c(2.04 KB)
📄 timingsafe_bcmp.c(1.08 KB)
📄 ucmpdi2.c(2.32 KB)
📄 udivdi3.c(1.97 KB)
📄 umoddi3.c(2 KB)
📁 x86

Editing: strtoq.c

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Chris Torek.
 *
 * 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
 *    documentation and/or other materials provided with the distribution.
 * 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ctype.h>
#include <sys/limits.h>

/*
 * Convert a string to a quad integer.
 *
 * Ignores `locale' stuff.  Assumes that the upper and lower case
 * alphabets and digits are each contiguous.
 */
quad_t
strtoq(const char *nptr, char **endptr, int base)
{
	const char *s;
	u_quad_t acc;
	unsigned char c;
	u_quad_t qbase, cutoff;
	int neg, any, cutlim;

/*
	 * Skip white space and pick up leading +/- sign if any.
	 * If base is 0, allow 0x for hex and 0 for octal, else
	 * assume decimal; if base is already 16, allow 0x.
	 */
	s = nptr;
	do {
		c = *s++;
	} while (isspace(c));
	if (c == '-') {
		neg = 1;
		c = *s++;
	} else {
		neg = 0;
		if (c == '+')
			c = *s++;
	}
	if ((base == 0 || base == 16) &&
	    c == '0' && (*s == 'x' || *s == 'X')) {
		c = s[1];
		s += 2;
		base = 16;
	}
	if (base == 0)
		base = c == '0' ? 8 : 10;

/*
	 * Compute the cutoff value between legal numbers and illegal
	 * numbers.  That is the largest legal value, divided by the
	 * base.  An input number that is greater than this value, if
	 * followed by a legal input character, is too big.  One that
	 * is equal to this value may be valid or not; the limit
	 * between valid and invalid numbers is then based on the last
	 * digit.  For instance, if the range for quads is
	 * [-9223372036854775808..9223372036854775807] and the input base
	 * is 10, cutoff will be set to 922337203685477580 and cutlim to
	 * either 7 (neg==0) or 8 (neg==1), meaning that if we have
	 * accumulated a value > 922337203685477580, or equal but the
	 * next digit is > 7 (or 8), the number is too big, and we will
	 * return a range error.
	 *
	 * Set any if any `digits' consumed; make it negative to indicate
	 * overflow.
	 */
	qbase = (unsigned)base;
	cutoff = neg ? (u_quad_t)-(QUAD_MIN + QUAD_MAX) + QUAD_MAX : QUAD_MAX;
	cutlim = cutoff % qbase;
	cutoff /= qbase;
	for (acc = 0, any = 0;; c = *s++) {
		if (!isascii(c))
			break;
		if (isdigit(c))
			c -= '0';
		else if (isalpha(c))
			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
		else
			break;
		if (c >= base)
			break;
		if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
			any = -1;
		else {
			any = 1;
			acc *= qbase;
			acc += c;
		}
	}
	if (any < 0) {
		acc = neg ? QUAD_MIN : QUAD_MAX;
	} else if (neg)
		acc = -acc;
	if (endptr != NULL)
		*endptr = __DECONST(char *, any ? s - 1 : nptr);
	return (acc);
}

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Editing: strtoq.c

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