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2012-12-16math: tgammal.c fixesSzabolcs Nagy-28/+23
this is not a full rewrite just fixes to the special case logic: +-0 and non-integer x<INT_MIN inputs incorrectly raised invalid exception and for +-0 the return value was wrong so integer test and odd/even test for negative inputs are changed and a useless overflow test was removed
2012-03-23fix tgammal: don't set the signgam globalnsz-13/+6
(tgamma must be thread-safe, signgam is for lgamma* functions)
2012-03-19code cleanup of named constantsnsz-17/+17
zero, one, two, half are replaced by const literals The policy was to use the f suffix for float consts (1.0f), but don't use suffix for long double consts (these consts can be exactly represented as double).
2012-03-18fix loads of missing const in new libm, and some global vars (?!) in powlRich Felker-7/+7
2012-03-13first commit of the new libm!Rich Felker-0/+287
thanks to the hard work of Szabolcs Nagy (nsz), identifying the best (from correctness and license standpoint) implementations from freebsd and openbsd and cleaning them up! musl should now fully support c99 float and long double math functions, and has near-complete complex math support. tgmath should also work (fully on gcc-compatible compilers, and mostly on any c99 compiler). based largely on commit 0376d44a890fea261506f1fc63833e7a686dca19 from nsz's libm git repo, with some additions (dummy versions of a few missing long double complex functions, etc.) by me. various cleanups still need to be made, including re-adding (if they're correct) some asm functions that were dropped.