wcsncasecmp
int wcsncasecmp(const wchar_t *, const wchar_t *, size_t);
PROTO_NORMAL(wcsncasecmp);
if (wcsncasecmp(src, L"inf", 3) == 0) {
if (wcsncasecmp(src, L"inity", 5) == 0)
if (wcsncasecmp(src, L"nan", 3) == 0) {
DEF_WEAK(wcsncasecmp);
TESTFUNC(wcsncasecmp, int, "%ls, %ls, %zu", "%d", 0)
TEST_R(wcsncasecmp, 0, s3, s4, 2);
TEST_R(wcsncasecmp, *s3 - *s4, s3, s4, 2);