nextafterl
long double nextafterl(long double, long double);
sum.hi = nextafterl(sum.hi, INFINITY * sum.lo);
return (nextafterl(z, 0));
return (nextafterl(z, -INFINITY));
return (nextafterl(z, INFINITY));
sum.hi = nextafterl(sum.hi, INFINITY * sum.lo);
__weak_reference(nextafter, nextafterl);
__strong_reference(nextafterl, nexttowardl);
stest(nextafterl, ldbl_small, l);