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

Commit Graph

Author	SHA1	Message	Date
Rich Felker	80949ccdc6	limits.h: support gcc's -funsigned-char some software apparently uses this and breaks with musl due to mismatching definitions...	14 years ago
Rich Felker	58bf74850f	Merge remote branch 'nsz/master'	14 years ago
Rich Felker	ad47d45e9d	upgrade to latest upstream TRE regex code (0.8.0) the main practical results of this change are 1. the regex code is no longer subject to LGPL; it's now 2-clause BSD 2. most (all?) popular nonstandard regex extensions are supported I hesitate to call this a "sync" since both the old and new code are heavily modified. in one sense, the old code was "more severely" modified, in that it was actively hostile to non-strictly-conforming expressions. on the other hand, the new code has eliminated the useless translation of the entire regex string to wchar_t prior to compiling, and now only converts multibyte character literals as needed. in the future i may use this modified TRE as a basis for writing the long-planned new regex engine that will avoid multibyte-to-wide character conversion entirely by compiling multibyte bracket expressions specific to UTF-8.	14 years ago
nsz	91c28f61f4	nearbyint optimization (only clear inexact when necessary) old code saved/restored the fenv (the new code is only as slow as that when inexact is not set before the call, but some other flag is set and the rounding is inexact, which is rare) before: bench_nearbyint_exact 5000000 N 261 ns/op bench_nearbyint_inexact_set 5000000 N 262 ns/op bench_nearbyint_inexact_unset 5000000 N 261 ns/op after: bench_nearbyint_exact 10000000 N 94.99 ns/op bench_nearbyint_inexact_set 25000000 N 65.81 ns/op bench_nearbyint_inexact_unset 10000000 N 94.97 ns/op	14 years ago
nsz	8c6fc860a9	remove a fixme comment	14 years ago
nsz	f1347a3a45	clean up pow.c and powf.c fix comments about special cases	14 years ago
nsz	615bbd365f	clean up powl.c fix special cases, use multiplication instead of scalbnl	14 years ago
nsz	1e2fea632b	fix a cbrtl.c regression and remove x87 precision setting	14 years ago
nsz	03c52e137a	Merge branch 'master' of git://git.etalabs.net/musl	14 years ago
Rich Felker	baa43bca0a	optimize scalbn family the fscale instruction is slow everywhere, probably because it involves a costly and unnecessary integer truncation operation that ends up being a no-op in common usages. instead, construct a floating point scale value with integer arithmetic and simply multiply by it, when possible. for float and double, this is always possible by going to the next-larger type. we use some cheap but effective saturating arithmetic tricks to make sure even very large-magnitude exponents fit. for long double, if the scaling exponent is too large to fit in the exponent of a long double value, we simply fallback to the expensive fscale method. on atom cpu, these changes speed up scalbn by over 30%. (min rdtsc timing dropped from 110 cycles to 70 cycles.)	14 years ago
Rich Felker	7513d3ecab	remquo asm: return quotient mod 8, as intended by the spec this is a lot more efficient and also what is generally wanted. perhaps the bit shuffling could be more efficient...	14 years ago
nsz	c879a9592f	Merge branch 'master' of git://git.etalabs.net/musl	14 years ago
Rich Felker	804fbf0b8c	use alternate formula for acos asm to avoid loss of precision	14 years ago
nsz	0b0735af45	Merge branch 'master' of git://git.etalabs.net/musl	14 years ago
Rich Felker	97721a5508	Merge remote branch 'nsz/master'	14 years ago
Rich Felker	acb744921b	fix exp asm exponents (base 2) near 16383 were broken due to (1) wrong cutoff, and (2) inability to fit the necessary range of scalings into a long double value. as a solution, we fall back to using frndint/fscale for insanely large exponents, and also have to special-case infinities here to avoid inf-inf generating nan. thankfully the costly code never runs in normal usage cases.	14 years ago
nsz	634c3a6302	Merge branch 'master' of git://git.etalabs.net/musl	14 years ago
nsz	0cbb654791	code cleanup of named constants 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).	14 years ago
nsz	b03255af77	fix remainder*.c: remove useless long double cast	14 years ago
nsz	4caa17b2a1	don't try to create non-standard denormalization signal Underflow exception is only raised when the result is invalid, but fmod is always exact. x87 has a denormalization exception, but that's nonstandard. And the superflous *1.0 will be optimized away by any compiler that does not honor signaling nans.	14 years ago
Rich Felker	0108420281	Merge remote branch 'nsz/master'	14 years ago
nsz	75483499da	new modff.c code, fix nan handling in modfl	14 years ago
nsz	2786c7d216	use scalbn or 2.0 instead of ldexp, fix fmal Some code assumed ldexp(x, 1) is faster than 2.0x, but ldexp is a wrapper around scalbn which uses multiplications inside, so this optimization is wrong. This commit also fixes fmal which accidentally used ldexp instead of ldexpl loosing precision. There are various additional changes from the work-in-progress const cleanups.	14 years ago
nsz	01fdfd491b	fix long double const workaround in cbrtl	14 years ago
nsz	2e8c8fbe7d	don't inline __rem_pio2l so the code size is smaller	14 years ago
nsz	c3587effe2	minor fix in __tanl (get sign properly)	14 years ago
Rich Felker	d9c1d72cdc	bug fix: wrong opcode for writing long long	14 years ago
nsz	eca1c35e5b	remove long double const workarounds Some long double consts were stored in two doubles as a workaround for x86_64 and i386 with the following comment: /* Long double constants are slow on these arches, and broken on i386. */ This is most likely old gcc bug related to the default x87 fpu precision setting (it's double instead of double extended on BSD).	14 years ago
nsz	9a810cb685	fix erfl wrapper for long double==double case	14 years ago
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	da7458a602	Merge remote branch 'nsz/master'	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
nsz	f767aba8af	Merge branch 'master' of git://git.etalabs.net/musl	14 years ago
Rich Felker	0b70a1e9a9	asm for floor/ceil/trunc	14 years ago
nsz	9322344fa4	Merge branch 'master' of git://git.etalabs.net/musl	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
nsz	0627e58af8	Merge branch 'master' of git://git.etalabs.net/musl	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
nsz	dbdec9722e	Merge branch 'master' of git://git.etalabs.net/musl	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

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939 Commits (80949ccdc6656c51292b4260b6e8d7b493ca6c45) All Branches Search

939 Commits (80949ccdc6656c51292b4260b6e8d7b493ca6c45)

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