--- /dev/null
+/*-
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Copyright (c) 2011 The FreeBSD Foundation
+ * All rights reserved.
+ * Portions of this software were developed by David Chisnall
+ * under sponsorship from the FreeBSD Foundation.
+ *
+ * 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "from @(#)strtol.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/lib/libc/stdlib/strtoimax.c 251672 2013-06-13 00:19:30Z emaste $");
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <stdint.h>
+#include <reent.h>
+#include "../locale/setlocale.h"
+
+/*
+ * Convert a string to an intmax_t integer.
+ *
+ * Assumes that the upper and lower case
+ * alphabets and digits are each contiguous.
+ */
+
+/*
+ *Reentrant version of strtoimax.
+ */
+static intmax_t
+_strtoimax_l(struct _reent *rptr, const char * __restrict nptr,
+ char ** __restrict endptr, int base, locale_t loc)
+{
+ const char *s = (const unsigned char *)nptr;
+ uintmax_t acc;
+ char c;
+ uintmax_t cutoff;
+ int neg = 0, 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.
+ */
+ do {
+ c = *s++;
+ } while (isspace_l(c, loc));
+ 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 intmax_t 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.
+ */
+ cutoff = neg ? -(uintmax_t)INTMAX_MIN : INTMAX_MAX;
+ cutlim = cutoff % base;
+ cutoff /= base;
+ for ( ; ; c = *s++) {
+ if (c >= '0' && c <= '9')
+ c -= '0';
+ else if (c >= 'A' && c <= 'Z')
+ c -= 'A' - 10;
+ else if (c >= 'a' && c <= 'z')
+ c -= 'a' - 10;
+ else
+ break;
+ if (c >= base)
+ break;
+ if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
+ any = -1;
+ else {
+ any = 1;
+ acc *= base;
+ acc += c;
+ }
+ }
+ if (any < 0) {
+ acc = neg ? INTMAX_MIN : INTMAX_MAX;
+ rptr->_errno = ERANGE;
+ } else if (!any) {
+noconv:
+ rptr->_errno = EINVAL;
+ } else if (neg)
+ acc = -acc;
+ if (endptr != NULL)
+ *endptr = (char *)(any ? s - 1 : nptr);
+ return (acc);
+}
+
+intmax_t
+_strtoimax_r(struct _reent *rptr, const char *__restrict nptr,
+ char **__restrict endptr, int base)
+{
+ return _strtoimax_l(rptr, nptr, endptr, base, __get_current_locale());
+}
+
+#ifndef _REENT_ONLY
+
+intmax_t
+strtoimax_l(const char * __restrict nptr, char ** __restrict endptr, int base,
+ locale_t loc)
+{
+ return _strtoimax_l(_REENT, nptr, endptr, base, loc);
+}
+
+intmax_t
+strtoimax(const char* __restrict nptr, char** __restrict endptr, int base)
+{
+ return _strtoimax_l(_REENT, nptr, endptr, base, __get_current_locale());
+}
+
+#endif
git://sourceware.org / newlib-cygwin.git / commitdiff