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#include <wchar.h>
#include <wctype.h>
#include <inttypes.h>
#include <errno.h>
#include "intparse.h"
intmax_t wcstoimax(const wchar_t *s, wchar_t **p, int base)
{
const wchar_t *s1 = s;
struct intparse ip = {0};
if (p) *p = (wchar_t *)s;
if (base && base-2U > 34) {
errno = EINVAL;
return 0;
}
for (; iswspace(*s); s++);
ip.base = base;
for (; __intparse(&ip, (char[]){(*s&-(*s<128U))}, 1); s++);
if (p && ip.err != EINVAL)
*p = (wchar_t *)s1 + ip.cnt;
if (ip.err) {
errno = ip.err;
if (ip.err == EINVAL) return 0;
return ip.neg ? INTMAX_MIN : INTMAX_MAX;
}
if (ip.val > INTMAX_MAX) {
if (!ip.neg || -ip.val != INTMAX_MIN)
errno = ERANGE;
return ip.neg ? INTMAX_MIN : INTMAX_MAX;
}
return ip.neg ? -ip.val : ip.val;
}
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