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

Commit Graph

Author	SHA1	Message	Date
Szabolcs Nagy	a764db9a08	math: use float constants in exp10f.c use the 'f' suffix when a float constant is not representable	14 years ago
Szabolcs Nagy	e93a0fe49d	math: expl.c cleanup raise overflow and underflow when necessary, fix various comments.	14 years ago
Szabolcs Nagy	ab1772c597	math: expf.c cleanup similar to exp.c cleanup: use scalbnf, don't return excess precision, drop some optimizatoins. exp.c was changed to be more consistent with expf.c code.	14 years ago
Szabolcs Nagy	159c7655d0	math: cleanup exp2.c exp2f.c and exp2l.c * old code relied on sign extension on right shift * exp2l ld64 wrapper was wrong * use scalbn instead of bithacks	14 years ago
Szabolcs Nagy	bbbf045ce9	math: exp.c clean up overflow and underflow was incorrect when the result was not stored. an optimization for the 0.5ln2 < \|x\| < 1.5ln2 domain was removed. did various cleanups around static constants and made the comments consistent with the code.	14 years ago
Szabolcs Nagy	45ff9d8eb6	math: ld80 invtrig cleanups keeping only commonly used data in invtrigl	14 years ago
Szabolcs Nagy	529a8de46c	math: simplify hypot and hypotf using scalbn this also fixes overflow/underflow raising and excess precision issues (as those are handled well in scalbn)	14 years ago
Szabolcs Nagy	033a9d6ad2	math: use '#pragma STDC FENV_ACCESS ON' when fenv is accessed	14 years ago
Szabolcs Nagy	c4359e0130	math: excess precision fix modf, modff, scalbn, scalbnf old code was correct only if the result was stored (without the excess precision) or musl was compiled with -ffloat-store. now we use STRICT_ASSIGN to work around the issue. (see note 160 in c11 section 6.8.6.4)	14 years ago
Szabolcs Nagy	666271c105	math: fix scalbn and scalbnf on overflow/underflow old code was correct only if the result was stored (without the excess precision) or musl was compiled with -ffloat-store. (see note 160 in n1570.pdf section 6.8.6.4)	14 years ago
Szabolcs Nagy	662ed20065	math: fix nextafter and nexttoward on maxdbl and maxflt input old code (return x+x;) returns correct value and raises correct flags only if the result is stored as double (or float)	14 years ago
Szabolcs Nagy	e2fe959fe2	math: raise flags in logl.c on <= 0 arguments	14 years ago
Szabolcs Nagy	52bcf3f5fb	math: fix logb*.c exceptions now that ilogb raises invalid	14 years ago
Szabolcs Nagy	37aa7f7301	math: raise flags in log2l.c on <= 0 arguments, and fix volatile	14 years ago
Szabolcs Nagy	04ccbdca6d	math: raise exception flags in log1pl.c on <= -1 arguments	14 years ago
Szabolcs Nagy	be81f51030	math: raise invalid flag in ilogb*.c on +-0, +-inf and nan	14 years ago
Szabolcs Nagy	6f64505df3	math: fix exception behaviour of expm1l.c on inf and nan	14 years ago
Szabolcs Nagy	b03c19a4b9	math: fix long double constants in exp10l.c	14 years ago
Rich Felker	ab76321c14	remove significandl this function never existed historically; since the float/double functions it's based on are nonstandard and deprecated, there's really no justification for its existence except that glibc has it. it can be added back if there's ever really a need...	14 years ago
Rich Felker	2242bf616b	add significand[fl] math functions	14 years ago
nsz	1fb0169154	math: fix exp.s on i386 and x86_64 so the exception flags are correct exp(inf), exp(-inf), exp(nan) used to raise wrong flags	14 years ago
Rich Felker	007c03f84f	fix missing prototype and simplify sincosl on ld64 archs	14 years ago
Rich Felker	fe2df4ad3e	fix invalid implicit pointer conversion in ld64 modfl	14 years ago
nsz	e5fb6820a4	math: fix fma bug on x86 (found by Bruno Haible with gnulib) The long double adjustment was wrong: The usual check is mant_bits & 0x7ff == 0x400 before doing a mant_bits++ or mant_bits-- adjustment since this is the only case when rounding an inexact ld80 into double can go wrong. (only in nearest rounding mode) After such a check the ++ and -- is ok (the mantissa will end in 0x401 or 0x3ff). fma is a bit different (we need to add 3 numbers with correct rounding: hi_xy + lo_xy + z so we should survive two roundings at different places without precision loss) The adjustment in fma only checks for zero low bits mant_bits & 0x3ff == 0 this way the adjusted value is correct when rounded to double or less precision. (this is an important piece in the fma puzzle) Unfortunately in this case the -- is not a correct adjustment because mant_bits might underflow so further checks are needed and this was the source of the bug.	14 years ago
Rich Felker	fad231b960	support ld80 pseudo-denormal invalid bit patterns; treat them as nan this is silly, but it makes apps that read binary junk and interpret it as ld80 "safer", and it gets gnulib to stop replacing printf...	14 years ago
Rich Felker	19e48c5531	use fistpll mnemonic instead of fistpq (more widely supported) on x86_64 too this was fixed previously on i386 but the corresponding code on x86_64 was missed.	14 years ago
nsz	3738a96e05	math: fix remquo.c when x==-y and a subnormal remainder bug as well backported fix from freebsd: http://svnweb.FreeBSD.org/base?view=revision&revision=233973	14 years ago
Rich Felker	0e195dfaa4	some assemblers don't like fistpq; use the alt. mnemonic fistpll	14 years ago
nsz	6ab8136b44	add FORCE_EVAL macro to evaluate float expr for their side effect updated nextafter* to use FORCE_EVAL, it can be used in many other places in the math code to improve readability.	14 years ago
Rich Felker	4e597feef0	fix unused variable warnings in new nextafter/nexttoward code apparently initializing a variable is not "using" it but assigning to it is "using" it. i don't really like this fix, but it's better than trying to make a bigger cleanup just before a release, and it should work fine (tested against nsz's math tests).	14 years ago
nsz	6cf865dba6	math: nextafter and nexttoward cleanup make nexttoward, nexttowardf independent of long double representation. fix nextafterl: it did not raise underflow flag when the result was 0.	14 years ago
nsz	f697d66b81	math: change the formula used for acos.s old: 2atan2(sqrt(1-x),sqrt(1+x)) new: atan2(fabs(sqrt((1-x)(1+x))),x) improvements: * all edge cases are fixed (sign of zero in downward rounding) * a bit faster (here a single call is about 131ns vs 162ns) * a bit more precise (at most 1ulp error on 1M uniform random samples in [0,1), the old formula gave some 2ulp errors as well)	14 years ago
Rich Felker	a917c03706	support alternate glibc name pow10 for exp10	14 years ago
Rich Felker	da5d89d42f	add C stub for sqrtl (already implemented in asm on i386 and x86_64)	14 years ago
Rich Felker	f681975577	first try at writing an efficient and "correct" exp10 this is a nonstandard function so it's not clear what conditions it should satisfy. my intent is that it be fast and exact for positive integral exponents when the result fits in the destination type, and fast and correctly rounded for small negative integral exponents. otherwise we aim for at most 1ulp error; it seems to differ from pow by at most 1ulp and it's often 2-5 times faster than pow.	14 years ago
Rich Felker	e5a9b50e97	fix typo in the x86_64 rounding asm	14 years ago
Rich Felker	0e4a995213	new math asm (abs/rounding) for x86_64 untested	14 years ago
nsz	37eaec3ad3	math: fix x86 asin accuracy use (1-x)(1+x) instead of (1-xx) in asin.s the later can be inaccurate with upward rounding when x is close to 1	14 years ago
nsz	7eabe8e690	math: minor cleanups in ceil and floor	14 years ago
nsz	d79ac8c38f	math: remove x86 modf asm the int part was wrong when -1 < x <= -0 (+0.0 instead of -0.0) and the size and performace gain of the asm version was negligible	14 years ago
nsz	f6ceccd922	math: rewrite modf.c and clean up modff.c cleaner implementation with unions and unsigned arithmetic	14 years ago
nsz	9f58d06007	math: fix modfl.c bug modfl(+-inf) was wrong on ld80 because the explicit msb was not taken into account during inf vs nan check	14 years ago
nsz	cf682072ce	math: fix a regression in powl and do some cleanups previously a division was accidentally turned into integer div (w = -i/NXT;) instead of long double div (w = -i; w /= NXT;)	14 years ago
nsz	bbfbc7edaf	math: add dummy tgamma and tgammaf implementations	14 years ago
nsz	1b229a2098	math: remove comment about aliasing lgamma as gamma It is probably not worth supporting gamma. (it was already deprecated in 4.3BSD)	14 years ago
nsz	ad23771c32	math: fix typo in i386 remquof and remquol asm (fldl instruction was used instead of flds and fldt)	14 years ago
Rich Felker	ad2d2b963a	asm for hypot and hypotf special care is made to avoid any inexact computations when either arg is zero (in which case the exact absolute value of the other arg should be returned) and to support the special condition that hypot(±inf,nan) yields inf. hypotl is not yet implemented since avoiding overflow is nontrivial.	14 years ago
nsz	6d8df2b972	minor rintl.c fix: remove unsupported ldbl format message	14 years ago
nsz	cb8fce4b4f	fix tgammal: don't set the signgam global (tgamma must be thread-safe, signgam is for lgamma* functions)	14 years ago
nsz	a4a0c91275	acos.s fix: use the formula acos(x) = atan2(sqrt(1-x),sqrt(1+x)) the old formula atan2(1,sqrt((1+x)/(1-x))) was faster but could give nan result at x=1 when the rounding mode is FE_DOWNWARD (so 1-1 == -0 and 2/-0 == -inf), the new formula gives -0 at x=+-1 with downward rounding.	14 years ago

1 2 3 4 5

228 Commits (04bced403dead13d20a46a1bd00ab1eb2c50b882)