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#include <wchar.h>
#include <wctype.h>
#include <inttypes.h>
#include <errno.h>
intmax_t wcstoimax(const wchar_t *s, wchar_t **p, int base)
{
int sign = 0;
uintmax_t x;
/* Initial whitespace */
for (; iswspace(*s); s++);
/* Optional sign */
if (*s == '-') sign = *s++;
else if (*s == '+') s++;
x = wcstoumax(s, p, base);
if (x > INTMAX_MAX) {
if (!sign || -x != INTMAX_MIN)
errno = ERANGE;
return sign ? INTMAX_MIN : INTMAX_MAX;
}
return sign ? -x : x;
}
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