remquo
double remquo(double, double, int *);
#define remquo(x, y, z) __tg_impl_simple(x, x, y, remquo, remquof, \
PROTO_NORMAL(remquo);
DEF_STD(remquo);
LDBL_MAYBE_CLONE(remquo);
ATF_CHECK(isnan(remquo(x, y, &q)));
rem = remquo(x, y, &q);