2 * Copyright (c) 1990, 1993
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14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * Original version ID:
30 * $NetBSD: src/lib/libc/locale/_wcstol.h,v 1.2 2003/08/07 16:43:03 agc Exp $
33 #define _LOCALE_NAME(func) func ## _l
34 #define _MAKE_LOCALE_NAME(func) _LOCALE_NAME(func)
35 #define _FUNCNAME_L _MAKE_LOCALE_NAME(_FUNCNAME)
38 * function template for strtol, strtoll and strtoimax.
41 * _FUNCNAME : function name
43 * __INT_MIN : lower limit of the return type
44 * __INT_MAX : upper limit of the return type
47 _FUNCNAME_L(const char * __restrict nptr, char ** __restrict endptr, int base,
53 int i, neg, any, cutlim;
55 _DIAGASSERT(nptr != NULL);
56 /* endptr may be NULL */
60 /* check base value */
61 if (base && (base < 2 || base > 36)) {
67 * Skip white space and pick up leading +/- sign if any.
68 * If base is 0, allow 0x for hex and 0 for octal, else
69 * assume decimal; if base is already 16, allow 0x.
74 } while (isspace_l((unsigned char)c, locale));
83 if ((base == 0 || base == 16) &&
84 c == '0' && (*s == 'x' || *s == 'X')) {
90 base = c == '0' ? 8 : 10;
93 * Compute the cutoff value between legal numbers and illegal
94 * numbers. That is the largest legal value, divided by the
95 * base. An input number that is greater than this value, if
96 * followed by a legal input character, is too big. One that
97 * is equal to this value may be valid or not; the limit
98 * between valid and invalid numbers is then based on the last
99 * digit. For instance, if the range for longs is
100 * [-2147483648..2147483647] and the input base is 10,
101 * cutoff will be set to 214748364 and cutlim to either
102 * 7 (neg==0) or 8 (neg==1), meaning that if we have accumulated
103 * a value > 214748364, or equal but the next digit is > 7 (or 8),
104 * the number is too big, and we will return a range error.
106 * Set any if any `digits' consumed; make it negative to indicate
109 cutoff = neg ? __INT_MIN : __INT_MAX;
110 cutlim = (int)(cutoff % base);
119 for (acc = 0, any = 0;; c = *s++) {
125 i = c - (isupper(c) ? 'A' - 10 : 'a' - 10);
133 if (acc < cutoff || (acc == cutoff && i > cutlim)) {
143 if (acc > cutoff || (acc == cutoff && i > cutlim)) {
155 /* LINTED interface specification */
156 *endptr = __DECONST(char *, (any ? s - 1 : nptr));
161 _FUNCNAME(const char * __restrict nptr, char ** __restrict endptr, int base)
163 return _FUNCNAME_L(nptr, endptr, base, __get_locale());