| Commit message (Expand) | Author | Files | Lines |
|---|
| 2012-03-16 | 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.
| Rich Felker | 4 | -4/+28 |
| 2012-03-16 | other side of the signgam namespace fix: use the internal name | Rich Felker | 3 | -3/+7 |
| 2012-03-16 | 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.
| Rich Felker | 1 | -2/+5 |
| 2012-03-16 | fix namespace issues for lgamma, etc.•••standard functions cannot depend on nonstandard symbols
| Rich Felker | 7 | -14/+25 |
| 2012-03-16 | remove junk sincos implementations in preparation to merge nsz's real ones | Rich Felker | 4 | -27/+0 |
| 2012-03-16 | revert COPYRIGHT file changes in preparation to merge nsz's math branch | Rich Felker | 1 | -4/+5 |
| 2012-03-16 | update copyright status (math library and new year) | Rich Felker | 1 | -6/+5 |
| 2012-03-15 | 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.
| Rich Felker | 1 | -3/+0 |
| 2012-03-15 | simplify nan check in sqrt (x86 asm); result of sqrt is never negative | Rich Felker | 1 | -4/+3 |
| 2012-03-15 | in math.h make lgamma_r and non-double bessel _GNU_SOURCE only•••long double and float bessel functions are no longer xsi extensions
| nsz | 4 | -20/+21 |
| 2012-03-15 | efficient sincos based on sin and cos | nsz | 5 | -8/+251 |
| 2012-03-15 | implement sincosf and sincosl functions; add prototypes•••presumably broken gcc may generate calls to these, and it's said that
ffmpeg makes use of sincosf.
| Rich Felker | 3 | -0/+19 |
| 2012-03-15 | avoid changing NaNs in sqrt (x86 asm) to satisfy c99 f.9 recommendation | Rich Felker | 1 | -0/+4 |
| 2012-03-15 | 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.
| Rich Felker | 1 | -0/+16 |
| 2012-03-13 | correct rounding for i387 sqrtf function | Rich Felker | 1 | -0/+2 |
| 2012-03-13 | math cleanup: use 1.0f instead of 1.0F | nsz | 4 | -6/+6 |
| 2012-03-13 | math cleanup: use 1.0f instead of (float)1.0 | nsz | 25 | -96/+96 |
| 2012-03-13 | remove libm.h includes when math.h and float.h are enough | nsz | 31 | -30/+47 |
| 2012-03-13 | fix scanf handling of "0" (followed by immediate EOF) with "%x"•••other cases with %x were probably broken too.
I would actually like to go ahead and replace this code in scanf with
calls to the new __intparse framework, but for now this calls for a
quick and unobtrusive fix without the risk of breaking other things.
| Rich Felker | 1 | -11/+6 |
| 2012-03-13 | clean up __expo2.c, use a slightly better k constant | nsz | 2 | -84/+14 |
| 2012-03-13 | fix copyright notice for the math lib | nsz | 1 | -5/+9 |
| 2012-03-13 | implement nan, nanf, nanl | Rich Felker | 3 | -0/+18 |
| 2012-03-13 | 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.
| Rich Felker | 378 | -7738/+20547 |
