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Diffstat (limited to 'gcc-4.7/libiberty/strtol.c')
| -rw-r--r-- | gcc-4.7/libiberty/strtol.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/gcc-4.7/libiberty/strtol.c b/gcc-4.7/libiberty/strtol.c deleted file mode 100644 index bde5647c9..000000000 --- a/gcc-4.7/libiberty/strtol.c +++ /dev/null @@ -1,165 +0,0 @@ -/*- - * Copyright (c) 1990 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 - * documentation and/or other materials provided with the distribution. - * 3. [rescinded 22 July 1999] - * 4. 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. - */ - -/* - -@deftypefn Supplemental {long int} strtol (const char *@var{string}, @ - char **@var{endptr}, int @var{base}) -@deftypefnx Supplemental {unsigned long int} strtoul (const char *@var{string}, @ - char **@var{endptr}, int @var{base}) - -The @code{strtol} function converts the string in @var{string} to a -long integer value according to the given @var{base}, which must be -between 2 and 36 inclusive, or be the special value 0. If @var{base} -is 0, @code{strtol} will look for the prefixes @code{0} and @code{0x} -to indicate bases 8 and 16, respectively, else default to base 10. -When the base is 16 (either explicitly or implicitly), a prefix of -@code{0x} is allowed. The handling of @var{endptr} is as that of -@code{strtod} above. The @code{strtoul} function is the same, except -that the converted value is unsigned. - -@end deftypefn - -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif -#ifdef HAVE_LIMITS_H -#include <limits.h> -#endif -#ifdef HAVE_SYS_PARAM_H -#include <sys/param.h> -#endif -#include <errno.h> -#ifdef NEED_DECLARATION_ERRNO -extern int errno; -#endif -#include "safe-ctype.h" - -/* FIXME: It'd be nice to configure around these, but the include files are too - painful. These macros should at least be more portable than hardwired hex - constants. */ - -#ifndef ULONG_MAX -#define ULONG_MAX ((unsigned long)(~0L)) /* 0xFFFFFFFF */ -#endif - -#ifndef LONG_MAX -#define LONG_MAX ((long)(ULONG_MAX >> 1)) /* 0x7FFFFFFF */ -#endif - -#ifndef LONG_MIN -#define LONG_MIN ((long)(~LONG_MAX)) /* 0x80000000 */ -#endif - -/* - * Convert a string to a long integer. - * - * Ignores `locale' stuff. Assumes that the upper and lower case - * alphabets and digits are each contiguous. - */ -long -strtol(const char *nptr, char **endptr, register int base) -{ - register const char *s = nptr; - register unsigned long acc; - register int c; - register unsigned long cutoff; - register 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(c)); - if (c == '-') { - neg = 1; - c = *s++; - } else 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 longs is - * [-2147483648..2147483647] and the input base is 10, - * cutoff will be set to 214748364 and cutlim to either - * 7 (neg==0) or 8 (neg==1), meaning that if we have accumulated - * a value > 214748364, 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 ? -(unsigned long)LONG_MIN : LONG_MAX; - cutlim = cutoff % (unsigned long)base; - cutoff /= (unsigned long)base; - for (acc = 0, any = 0;; c = *s++) { - 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 *= base; - acc += c; - } - } - if (any < 0) { - acc = neg ? LONG_MIN : LONG_MAX; - errno = ERANGE; - } else if (neg) - acc = -acc; - if (endptr != 0) - *endptr = (char *) (any ? s - 1 : nptr); - return (acc); -} |