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Diffstat (limited to 'lib/non-semihosting/strtol.c')
| -rw-r--r-- | lib/non-semihosting/strtol.c | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/lib/non-semihosting/strtol.c b/lib/non-semihosting/strtol.c deleted file mode 100644 index f743c416..00000000 --- a/lib/non-semihosting/strtol.c +++ /dev/null @@ -1,144 +0,0 @@ -/*- - * 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. - * 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. - * - * From: @(#)strtol.c 8.1 (Berkeley) 6/4/93 - */ - -/* - * Portions copyright (c) 2009-2013, ARM Limited and Contributors. All rights reserved. - */ - -#include "types.h" -#include "ctype.h" -#include "limits.h" - -/* - * Convert a string to a long integer. - * - * Ignores `locale' stuff. Assumes that the upper and lower case - * alphabets and digits are each contiguous. - */ -static long -bsd_strtol(nptr, endptr, base) - const char *nptr; - char **endptr; - int base; -{ - const char *s = nptr; - unsigned long acc; - unsigned char c; - unsigned long 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(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 (!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 *= base; - acc += c; - } - } - if (any < 0) { - acc = neg ? LONG_MIN : LONG_MAX; - } else if (neg) - acc = -acc; - if (endptr != 0) - *((const char **)endptr) = any ? s - 1 : nptr; - return (acc); -} - -int strict_strtol(const char *str, unsigned int base, long *result) -{ - if (*str == '-') - *result = 0 - bsd_strtol(str + 1, NULL, base); - else - *result = bsd_strtol(str, NULL, base); - return 0; -} - -int strict_strtoul(const char *str, unsigned int base, unsigned long *result) -{ - *result = bsd_strtol(str, NULL, base); - return 0; -} |