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Diffstat (limited to 'newlib/libc/stdlib/strtol.c')
| -rw-r--r-- | newlib/libc/stdlib/strtol.c | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/newlib/libc/stdlib/strtol.c b/newlib/libc/stdlib/strtol.c deleted file mode 100644 index 4c07e61..0000000 --- a/newlib/libc/stdlib/strtol.c +++ /dev/null @@ -1,226 +0,0 @@ -/* -FUNCTION - <<strtol>>---string to long - -INDEX - strtol -INDEX - _strtol_r - -ANSI_SYNOPSIS - #include <stdlib.h> - long strtol(const char *<[s]>, char **<[ptr]>,int <[base]>); - - long _strtol_r(void *<[reent]>, - const char *<[s]>, char **<[ptr]>,int <[base]>); - -TRAD_SYNOPSIS - #include <stdlib.h> - long strtol (<[s]>, <[ptr]>, <[base]>) - char *<[s]>; - char **<[ptr]>; - int <[base]>; - - long _strtol_r (<[reent]>, <[s]>, <[ptr]>, <[base]>) - char *<[reent]>; - char *<[s]>; - char **<[ptr]>; - int <[base]>; - -DESCRIPTION -The function <<strtol>> converts the string <<*<[s]>>> to -a <<long>>. First, it breaks down the string into three parts: -leading whitespace, which is ignored; a subject string consisting -of characters resembling an integer in the radix specified by <[base]>; -and a trailing portion consisting of zero or more unparseable characters, -and always including the terminating null character. Then, it attempts -to convert the subject string into a <<long>> and returns the -result. - -If the value of <[base]> is 0, the subject string is expected to look -like a normal C integer constant: an optional sign, a possible `<<0x>>' -indicating a hexadecimal base, and a number. If <[base]> is between -2 and 36, the expected form of the subject is a sequence of letters -and digits representing an integer in the radix specified by <[base]>, -with an optional plus or minus sign. The letters <<a>>--<<z>> (or, -equivalently, <<A>>--<<Z>>) are used to signify values from 10 to 35; -only letters whose ascribed values are less than <[base]> are -permitted. If <[base]> is 16, a leading <<0x>> is permitted. - -The subject sequence is the longest initial sequence of the input -string that has the expected form, starting with the first -non-whitespace character. If the string is empty or consists entirely -of whitespace, or if the first non-whitespace character is not a -permissible letter or digit, the subject string is empty. - -If the subject string is acceptable, and the value of <[base]> is zero, -<<strtol>> attempts to determine the radix from the input string. A -string with a leading <<0x>> is treated as a hexadecimal value; a string with -a leading 0 and no <<x>> is treated as octal; all other strings are -treated as decimal. If <[base]> is between 2 and 36, it is used as the -conversion radix, as described above. If the subject string begins with -a minus sign, the value is negated. Finally, a pointer to the first -character past the converted subject string is stored in <[ptr]>, if -<[ptr]> is not <<NULL>>. - -If the subject string is empty (or not in acceptable form), no conversion -is performed and the value of <[s]> is stored in <[ptr]> (if <[ptr]> is -not <<NULL>>). - -The alternate function <<_strtol_r>> is a reentrant version. The -extra argument <[reent]> is a pointer to a reentrancy structure. - -RETURNS -<<strtol>> returns the converted value, if any. If no conversion was -made, 0 is returned. - -<<strtol>> returns <<LONG_MAX>> or <<LONG_MIN>> if the magnitude of -the converted value is too large, and sets <<errno>> to <<ERANGE>>. - -PORTABILITY -<<strtol>> is ANSI. - -No supporting OS subroutines are required. -*/ - -/*- - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 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. - */ - - -#include <_ansi.h> -#include <limits.h> -#include <ctype.h> -#include <errno.h> -#include <stdlib.h> -#include <reent.h> - -/* - * Convert a string to a long integer. - * - * Ignores `locale' stuff. Assumes that the upper and lower case - * alphabets and digits are each contiguous. - */ -long -_DEFUN (_strtol_r, (rptr, nptr, endptr, base), - struct _reent *rptr _AND - _CONST char *nptr _AND - char **endptr _AND - 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; - rptr->_errno = ERANGE; - } else if (neg) - acc = -acc; - if (endptr != 0) - *endptr = (char *) (any ? s - 1 : nptr); - return (acc); -} - -#ifndef _REENT_ONLY - -long -_DEFUN (strtol, (s, ptr, base), - _CONST char *s _AND - char **ptr _AND - int base) -{ - return _strtol_r (_REENT, s, ptr, base); -} - -#endif |