mirror/musl - mirror of git://git.musl-libc.org/musl

	Commit message (Collapse)	Author	Age	Files	Lines
*	math: new pow	Szabolcs Nagy	2019-04-17	1	-303/+318
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	from https://github.com/ARM-software/optimized-routines, commit 04884bd04eac4b251da4026900010ea7d8850edc The underflow exception is signaled if the result is in the subnormal range even if the result is exact. code size change: +3421 bytes. benchmark on x86_64 before, after, speedup: -Os: pow rthruput: 102.96 ns/call 33.38 ns/call 3.08x pow latency: 144.37 ns/call 54.75 ns/call 2.64x -O3: pow rthruput: 98.91 ns/call 32.79 ns/call 3.02x pow latency: 138.74 ns/call 53.78 ns/call 2.58x
*	math: fix pow signed shift ub	Szabolcs Nagy	2016-10-20	1	-2/+2
\| \| \| \| \| \| \| \| \| \| \| \|	j is int32_t and thus j<<31 is undefined if j==1, so j is changed to uint32_t locally as a quick fix, the generated code is not affected. (this is a strict conformance fix, future c standard may allow 1<<31, see DR 463. the bug was inherited from freebsd fdlibm, the proper fix is to use uint32_t for all bit hacks, but that requires more intrusive changes.) reported by Daniel Sabogal
*	math: fix pow(+-0,-inf) not to raise divbyzero flag	Szabolcs Nagy	2015-04-18	1	-1/+1
\| \| \| \| \| \|	this reverts the commit f29fea00b5bc72d4b8abccba2bb1e312684d1fce which was based on a bug in C99 and POSIX and did not match IEEE-754 http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1515.pdf
*	math: fix pow(x,-1) to raise underflow properly	Szabolcs Nagy	2013-08-15	1	-2/+14
\| \| \| \| \| \|	if FLT_EVAL_METHOD!=0 check if (double)(1/x) is subnormal and not a power of 2 (if 1/x is power of 2 then either it is exact or the long double to double rounding already raised inexact and underflow)
*	math: fix pow(0,-inf) to raise divbyzero flag	Szabolcs Nagy	2013-08-15	1	-1/+1
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*	clean up pow.c and powf.c	nsz	2012-03-20	1	-36/+29
\| \| \| \|	fix comments about special cases
*	code cleanup of named constants	nsz	2012-03-19	1	-20/+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).
*	math cleanup: use 1.0f instead of 1.0F	nsz	2012-03-13	1	-1/+1
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*	first commit of the new libm!	Rich Felker	2012-03-13	1	-0/+326
	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.