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* math: fix remaining old long double code (erfl, fmal, lgammal, scalbnl)Szabolcs Nagy2013-09-051-4/+4
| | | | | in lgammal don't handle 1 and 2 specially, in fma use the new ldshape union instead of ld80 one.
* math: minor scalbn*.c simplificationSzabolcs Nagy2013-08-151-2/+2
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* code cleanup of named constantsnsz2012-03-191-1/+1
| | | | | | | 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).
* simplify scalbn*.c implementationsnsz2012-03-191-49/+22
| | | | | The old scalbn.c was wrong and slow, the new one is just slow. (scalbn(0x1p+1023,-2097) should give 0x1p-1074, but the old code gave 0)
* first commit of the new libm!Rich Felker2012-03-131-0/+63
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.