musl - musl - an implementation of the standard library for Linux-based systems

Age	Commit message (Collapse)	Author	Lines
2026-08-05	math: fix acosh for x<0	Szabolcs Nagy	-6/+7
	acosh(-0x1.8p15) returned -3.7534177368329567 instead of nan. the same issue got fixed for acoshf and acoshl in commits c4c38e6364323b6d83ba3428464e19987b981d7a and 6d10102709df4bc966d2846c1c45cd667e5048e5 here we follow the latter. reported by Paul Zimmermann.
2013-10-07	math: use sqrtl if FLT_EVAL_METHOD==2 in acosh and acoshf	Szabolcs Nagy	-0/+5
	this makes acosh slightly more precise around 1.0 on i386
2012-12-11	math: rewrite inverse hyperbolic functions to be simpler/smaller	Szabolcs Nagy	-48/+13
	modifications: * avoid unsigned->signed integer conversion * do not handle special cases when they work correctly anyway * more strict threshold values (0x1p26 instead of 0x1p28 etc) * smaller code, cleaner branching logic * same precision as the old code: acosh(x) has up to 2ulp error in [1,1.125] asinh(x) has up to 1.6ulp error in [0.125,0.5], [-0.5,-0.125] atanh(x) has up to 1.7ulp error in [0.125,0.5], [-0.5,-0.125]
2012-03-19	code cleanup of named constants	nsz	-3/+2
	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).
2012-03-13	first commit of the new libm!	Rich Felker	-0/+55
	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.