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* math: rewrite remainder functions (remainder, remquo, fmod, modf)Szabolcs Nagy2013-09-051-150/+61
| | | | | | | | | * results are exact * modfl follows truncl (raises inexact flag spuriously now) * modf and modff only had cosmetic cleanup * remainder is just a wrapper around remquo now * using iterative shift+subtract for remquo and fmod * ld80 and ld128 are supported as well
* math: fix remquo.c when x==-y and a subnormal remainder bug as wellnsz2012-05-081-3/+4
| | | | | backported fix from freebsd: http://svnweb.FreeBSD.org/base?view=revision&revision=233973
* remove a fixme commentnsz2012-03-201-1/+0
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* first commit of the new libm!Rich Felker2012-03-131-0/+171
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.