math: fix a regression in powl and do some cleanups previously a division was accidentally turned into integer div (w = -i/NXT;) instead of long double div (w = -i; w /= NXT;)
math: fix a regression in powl and do some cleanups
previously a division was accidentally turned into integer div
(w = -i/NXT;) instead of long double div (w = -i; w /= NXT;)

davidlazar/musl,chardi/musl,davidlazar/musl,chardi/musl,chardi/musl