riscv/musl - musl - Gitea: Git with a cup of tea

Commit Graph

Author	SHA1	Message	Date
Rich Felker	b04b588791	asm for log1p	14 years ago
Rich Felker	9d82a15e15	asm for log2	14 years ago
Rich Felker	27deb53889	asm for remquo this could perhaps use some additional testing for corner cases, but it seems to be correct.	14 years ago
Rich Felker	02db27d9de	optimize exponential asm for i386 up to 30% faster exp2 by avoiding slow frndint and fscale functions. expm1 also takes a much more direct path for small arguments (the expected usage case).	14 years ago
Rich Felker	be5b01f855	fix broken modf family functions	14 years ago
Rich Felker	1bf4dad327	asm for modf functions	14 years ago
nsz	8051e08e10	simplify scalbn*.c implementations 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)	14 years ago
Rich Felker	0b70a1e9a9	asm for floor/ceil/trunc	14 years ago
Rich Felker	58ff9e8eaf	asm for scalbn family unlike some implementations, these functions perform the equivalent of gcc's -ffloat-store on the result before returning. this is necessary to raise underflow/overflow/inexact exceptions, perform the correct rounding with denormals, etc.	14 years ago
Rich Felker	bc33e61704	asm for inverse trig functions unlike trig functions, these are easy to do in asm because they do not involve (arbitrary-precision) argument reduction. fpatan automatically takes care of domain issues, and in asin and acos, fsqrt takes care of them for us.	14 years ago
Rich Felker	495a52ae7b	asm for log functions	14 years ago
Rich Felker	aa1b4dff45	fix broken exponential asm infinities were getting converted into nans. the new code simply tests for infinity and replaces it with a large magnitude value of the same sign. also, the fcomi instruction is apparently not part of the i387 instruction set, so avoid using it.	14 years ago
Rich Felker	37eb14dd2b	asm for lrint family on i386	14 years ago
Rich Felker	6f26cf3dac	asm exponential functions for i386	14 years ago
nsz	682e471400	remove unnecessary TODO comments from fma.c	14 years ago
nsz	d09a83f613	fmal bug fix: nan input should not raise exception	14 years ago
nsz	b1cbd70743	add fma implementation for x86 correctly rounded double precision fma using extended precision arithmetics for ld80 systems (x87)	14 years ago
Rich Felker	b935147761	assembly optimizations for fmod/remainder functions	14 years ago
Rich Felker	8d9e948652	asm versions of some simple math functions for i386 and x86_64 these are functions that have direct fpu approaches to implementation without problematic exception or rounding issues. x86_64 lacks float/double versions because i'm unfamiliar with the necessary sse code for performing these operations.	14 years ago
nsz	afad262440	simplify lround and llround functions Simple wrappers around round is enough because spurious inexact exception is allowed.	14 years ago
nsz	65db00983f	make lrint and llrint functions work without fenv support	14 years ago
nsz	9b6899f2c5	faster lrint and llrint functions A faster workaround for spurious inexact exceptions when the result cannot be represented. The old code actually could be wrong, because gcc reordered the integer conversion and the exception check.	14 years ago
Rich Felker	9e2a895aaa	fix loads of missing const in new libm, and some global vars (?!) in powl	14 years ago
Rich Felker	d3fc724759	one more fenv availability issue: lround	14 years ago
Rich Felker	2e77dc13f8	make fma and lrint functions build without full fenv support this is necessary to support archs where fenv is incomplete or unavailable (presently arm). fma, fmal, and the lrint family should work perfectly fine with this change; fmaf is slightly broken with respect to rounding as it depends on non-default rounding modes to do its work.	14 years ago
Rich Felker	8c071f872b	other side of the signgam namespace fix: use the internal name	14 years ago
Rich Felker	1a3dce4184	make signgam a weak alias for an internal symbol otherwise, the standard C lgamma function will clobber a symbol in the namespace reserved for the application.	14 years ago
Rich Felker	de7db6e927	fix namespace issues for lgamma, etc. standard functions cannot depend on nonstandard symbols	14 years ago
Rich Felker	9d507419db	remove special nan handling from x86 sqrt asm a double precision nan, when converted to extended (80-bit) precision, will never end in 0x400, since the corresponding bits do not exist in the original double precision value. thus there's no need to waste time and code size on this check.	14 years ago
Rich Felker	1295848efb	simplify nan check in sqrt (x86 asm); result of sqrt is never negative	14 years ago
nsz	40305f74bd	in math.h make lgamma_r and non-double bessel _GNU_SOURCE only long double and float bessel functions are no longer xsi extensions	14 years ago
nsz	0144b45b71	efficient sincos based on sin and cos	14 years ago
Rich Felker	46702f68f9	avoid changing NaNs in sqrt (x86 asm) to satisfy c99 f.9 recommendation	14 years ago
Rich Felker	809556e60a	correctly rounded sqrt() asm for x86 (i387) the fsqrt opcode is correctly rounded, but only in the fpu's selected precision mode, which is 80-bit extended precision. to get a correctly rounded double precision output, we check for the only corner cases where two-step rounding could give different results than one-step (extended-precision mantissa ending in 0x400) and adjust the mantissa slightly in the opposite direction of the rounding which the fpu already did (reported in the c1 flag of the fpu status word). this should have near-zero cost in the non-corner cases and at worst very low cost. note that in order for sqrt() to get used when compiling with gcc, the broken, non-conformant builtin sqrt must be disabled.	14 years ago
Rich Felker	e0a54e6725	correct rounding for i387 sqrtf function	14 years ago
nsz	32ca5ef3ff	math cleanup: use 1.0f instead of 1.0F	14 years ago
nsz	8d0a6f7a1c	math cleanup: use 1.0f instead of (float)1.0	14 years ago
nsz	9560b6b152	remove libm.h includes when math.h and float.h are enough	14 years ago
nsz	df8b3e5aef	clean up __expo2.c, use a slightly better k constant	14 years ago
Rich Felker	bf9d9dcaa6	implement nan, nanf, nanl	14 years ago
Rich Felker	b69f695ace	first commit of the new libm! 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.	14 years ago
Rich Felker	daaef3552d	fix error in previous ld80 fpclassify commit	15 years ago
Rich Felker	f6fd351c70	catch invalid ld80 bit patterns and treat them as nan this should not be necessary - the invalid bit patterns cannot be created except through type punning. however, some broken gnu software is passing them to printf and triggering dangerous stack-smashing, so let's catch them anyway...	15 years ago
Rich Felker	bc30aea457	type directives for x86_64 math asm	15 years ago
Rich Felker	e22c2d3ee6	use .type directives for math asm (needed for dynamic linking to work)	15 years ago
Nicholas J. Kain	1e12632591	Port musl to x86-64. One giant commit!	15 years ago
Rich Felker	0b44a0315b	initial check-in, version 0.5.0	15 years ago

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53 Commits (b04b588791e6afbe7e91684546b446b136fd518c)