| Commit message (Collapse) | Author | Age | Files | Lines | ||
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| | * | don't inline __rem_pio2l so the code size is smaller | nsz | 2012-03-19 | 5 | -9/+1 | |
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| | * | minor fix in __tanl (get sign properly) | nsz | 2012-03-19 | 1 | -2/+1 | |
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| * | | fix exp asm | Rich Felker | 2012-03-19 | 1 | -23/+22 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | 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. | |||||
| * | | Merge remote branch 'nsz/master' | Rich Felker | 2012-03-19 | 7 | -80/+3 | |
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| | * | remove long double const workarounds | nsz | 2012-03-19 | 6 | -79/+2 | |
| | | | | | | | | | | | | | | | | | 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). | |||||
| | * | fix erfl wrapper for long double==double case | nsz | 2012-03-19 | 1 | -1/+1 | |
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| * | | bug fix: wrong opcode for writing long long | Rich Felker | 2012-03-19 | 2 | -2/+2 | |
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| * | asm for log1p | Rich Felker | 2012-03-19 | 3 | -0/+45 | |
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| * | asm for log2 | Rich Felker | 2012-03-19 | 3 | -0/+21 | |
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| * | asm for remquo | Rich Felker | 2012-03-19 | 3 | -0/+43 | |
| | | | | | | this could perhaps use some additional testing for corner cases, but it seems to be correct. | |||||
| * | optimize exponential asm for i386 | Rich Felker | 2012-03-19 | 2 | -58/+77 | |
| | | | | | | | 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). | |||||
| * | Merge remote branch 'nsz/master' | Rich Felker | 2012-03-19 | 5 | -163/+208 | |
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| | * | simplify scalbn*.c implementations | nsz | 2012-03-19 | 3 | -152/+65 | |
| | | | | | | | | | | | 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) | |||||
| | * | Merge branch 'master' of git://git.etalabs.net/musl | nsz | 2012-03-19 | 9 | -0/+75 | |
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| | * \ | Merge branch 'master' of git://git.etalabs.net/musl | nsz | 2012-03-19 | 21 | -0/+157 | |
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| | * \ \ | Merge branch 'master' of git://git.etalabs.net/musl | nsz | 2012-03-19 | 14 | -1/+109 | |
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| | * \ \ \ | Merge branch 'master' of git://git.etalabs.net/musl | nsz | 2012-03-19 | 9 | -0/+89 | |
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| | * | | | | | remove unnecessary TODO comments from fma.c | nsz | 2012-03-19 | 1 | -5/+1 | |
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| | * | | | | | fmal bug fix: nan input should not raise exception | nsz | 2012-03-19 | 1 | -4/+4 | |
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| | * | | | | | add fma implementation for x86 | nsz | 2012-03-19 | 1 | -7/+143 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | correctly rounded double precision fma using extended precision arithmetics for ld80 systems (x87) | |||||
| * | | | | | | fix broken modf family functions | Rich Felker | 2012-03-19 | 3 | -27/+66 | |
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| * | | | | | | asm for modf functions | Rich Felker | 2012-03-19 | 3 | -0/+45 | |
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| * | | | | | asm for floor/ceil/trunc | Rich Felker | 2012-03-19 | 9 | -0/+75 | |
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| * | | | | asm for scalbn family | Rich Felker | 2012-03-19 | 9 | -0/+64 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. | |||||
| * | | | | asm for inverse trig functions | Rich Felker | 2012-03-19 | 12 | -0/+93 | |
| | |_|/ |/| | | | | | | | | | | | | | | | | | 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. | |||||
| * | | | asm for log functions | Rich Felker | 2012-03-18 | 6 | -0/+42 | |
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| * | | | fix broken exponential asm | Rich Felker | 2012-03-18 | 2 | -1/+21 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. | |||||
| * | | | asm for lrint family on i386 | Rich Felker | 2012-03-18 | 6 | -0/+46 | |
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| * | | asm exponential functions for i386 | Rich Felker | 2012-03-18 | 9 | -0/+89 | |
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| * | assembly optimizations for fmod/remainder functions | Rich Felker | 2012-03-18 | 8 | -0/+88 | |
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| * | asm versions of some simple math functions for i386 and x86_64 | Rich Felker | 2012-03-18 | 8 | -0/+48 | |
| | | | | | | | | 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. | |||||
| * | simplify lround and llround functions | nsz | 2012-03-18 | 6 | -112/+20 | |
| | | | | | | Simple wrappers around round is enough because spurious inexact exception is allowed. | |||||
| * | make lrint and llrint functions work without fenv support | nsz | 2012-03-18 | 6 | -6/+16 | |
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| * | faster lrint and llrint functions | nsz | 2012-03-18 | 6 | -80/+99 | |
| | | | | | | | | 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. | |||||
| * | fix loads of missing const in new libm, and some global vars (?!) in powl | Rich Felker | 2012-03-18 | 19 | -49/+49 | |
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| * | one more fenv availability issue: lround | Rich Felker | 2012-03-17 | 1 | -0/+2 | |
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| * | make fma and lrint functions build without full fenv support | Rich Felker | 2012-03-16 | 4 | -4/+28 | |
| | | | | | | | | | 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. | |||||
| * | other side of the signgam namespace fix: use the internal name | Rich Felker | 2012-03-16 | 3 | -3/+7 | |
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| * | make signgam a weak alias for an internal symbol | Rich Felker | 2012-03-16 | 1 | -2/+5 | |
| | | | | | | otherwise, the standard C lgamma function will clobber a symbol in the namespace reserved for the application. | |||||
| * | fix namespace issues for lgamma, etc. | Rich Felker | 2012-03-16 | 6 | -14/+23 | |
| | | | | | standard functions cannot depend on nonstandard symbols | |||||
| * | Merge remote branch 'nsz/master' | Rich Felker | 2012-03-16 | 66 | -216/+413 | |
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| | * | in math.h make lgamma_r and non-double bessel _GNU_SOURCE only | nsz | 2012-03-15 | 3 | -0/+3 | |
| | | | | | | | | | long double and float bessel functions are no longer xsi extensions | |||||
| | * | efficient sincos based on sin and cos | nsz | 2012-03-15 | 3 | -0/+247 | |
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| | * | math cleanup: use 1.0f instead of 1.0F | nsz | 2012-03-13 | 4 | -6/+6 | |
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| | * | math cleanup: use 1.0f instead of (float)1.0 | nsz | 2012-03-13 | 25 | -96/+96 | |
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| | * | remove libm.h includes when math.h and float.h are enough | nsz | 2012-03-13 | 31 | -30/+47 | |
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| | * | clean up __expo2.c, use a slightly better k constant | nsz | 2012-03-13 | 2 | -84/+14 | |
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| * | | remove special nan handling from x86 sqrt asm | Rich Felker | 2012-03-15 | 1 | -3/+0 | |
| | | | | | | | | | | | | | | | 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. | |||||
| * | | simplify nan check in sqrt (x86 asm); result of sqrt is never negative | Rich Felker | 2012-03-15 | 1 | -4/+3 | |
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| * | | avoid changing NaNs in sqrt (x86 asm) to satisfy c99 f.9 recommendation | Rich Felker | 2012-03-15 | 1 | -0/+4 | |
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