truncl
long double truncl(long double);
__weak_alias(truncl, trunc)
__weak_alias(truncl, trunc)
__weak_alias(truncl, _truncl)
ATF_CHECK(truncl(x) < SMALL_NUM);
ATF_CHECK(truncl(y) < SMALL_NUM);
ATF_CHECK(isnan(truncl(x)) != 0);
long double y = truncl(x);
long double y = truncl(x);
long double y = truncl(x);
long double y = truncl(x);