remquof
float remquof(float, float, int *);
#define remquo(x, y, z) __tg_impl_simple(x, x, y, remquo, remquof, \
PROTO_STD_DEPRECATED(remquof);
ATF_CHECK(isnan(remquof(x, y, &q)));
rem = remquof(x, y, &q);