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* math: fix aliasing violation in long double wrappersSzabolcs Nagy2014-04-111-1/+6
| | | | | | | | | modfl and sincosl were passing long double* instead of double* to the wrapped double precision functions (on archs where long double and double have the same size). This is fixed now by using temporaries (this is not optimized to a single branch so the generated code is a bit bigger). Found by Morten Welinder.
* math: remove an unused variable from modflSzabolcs Nagy2013-10-061-1/+0
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* math: rewrite remainder functions (remainder, remquo, fmod, modf)Szabolcs Nagy2013-09-051-83/+34
| | | | | | | | | * 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
* fix invalid implicit pointer conversion in ld64 modflRich Felker2012-07-021-1/+1
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* math: fix modfl.c bugnsz2012-03-281-1/+1
| | | | | modfl(+-inf) was wrong on ld80 because the explicit msb was not taken into account during inf vs nan check
* new modff.c code, fix nan handling in modflnsz2012-03-191-2/+2
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* first commit of the new libm!Rich Felker2012-03-131-0/+100
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.