fmaximum_mag_numl
long double fmaximum_mag_numl(long double, long double);
__weak_reference(fmaximum_mag_num, fmaximum_mag_numl);
TEST(fmaximum_mag_numl, long double, big, small, expected_max_mag_num, rmode);
TEST(fmaximum_mag_numl, long double, small, big, expected_max_mag_num, rmode);