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163 Commits

Author SHA1 Message Date
Joseph Myers
60e235ee2a Fix spurious underflows from pow with results close to 1 (bug 14811). 2012-11-07 13:03:31 +00:00
Joseph Myers
82477c28f4 Fix fma underflows with small x * y (bug 14793). 2012-11-06 14:12:54 +00:00
Joseph Myers
a0c2940d67 Fix fma overflow results outside round-to-nearest mode (bug 14797). 2012-11-04 19:26:02 +00:00
Joseph Myers
5b5b04d628 Make fma use of Dekker and Knuth algorithms use round-to-nearest (bug 14796). 2012-11-03 19:48:53 +00:00
Joseph Myers
473611b22d Fix fma (a, b, c) for small a * b (bugs 14784, 14785). 2012-11-01 16:47:26 +00:00
Joseph Myers
ef82f4da79 Fix fma underflow exceptions in after-rounding edge cases. 2012-10-31 13:01:17 +00:00
Joseph Myers
8627a2329c Fix fma missing underflows and bad results for some subnormal results (bugs 14152, 14783). 2012-10-30 13:54:50 +00:00
Joseph Myers
bec749fda1 Fix sign of inexact zero return from fma (bug 14645). 2012-10-01 08:30:06 +00:00
Joseph Myers
8ec5b01346 Fix sign of exact zero return from fma (bug 14638). 2012-09-29 18:31:54 +00:00
Joseph Myers
d032e0d29b Fix inaccuracy of clog, clog10 near |z| = 1 (bug 13629). 2012-09-25 19:43:49 +00:00
Marek Polacek
354691b7b5 Set up errno properly for yn. 2012-07-25 12:59:36 +02:00
Joseph Myers
b7abb4bf78 Fix wordsize-64 cosh regression (bug 14273). 2012-06-21 19:26:09 +00:00
Joseph Myers
10285c2113 Fix pow (0.0, -Inf) (bug 14241). 2012-06-15 11:27:51 +00:00
Joseph Myers
c5bfe3d5ba Fix fmod for subnormals (bug 14048). 2012-06-01 19:05:46 +00:00
Joseph Myers
4842e4fe5f Ensure additions are not scheduled after fetestexcept in fmaf and fmal. 2012-06-01 19:02:21 +00:00
Aurelien Jarno
efb734887e Add a barrier in the double fma implementation. 2012-06-01 19:01:17 +00:00
Andreas Schwab
25dbcb277a Optimize handling of denormals in logb/logbf/logbl 2012-05-26 13:53:22 +02:00
Adhemerval Zanella
9ea01d93f7 Log2 and log10 for wordsize-64. 
This patch also fixes indentation on default dbl-64 code.
 2012-05-15 16:34:41 -03:00
H.J. Lu
c044d724dc Use __builtin_clzll on int64 in __logb 2012-05-14 05:04:11 -07:00
Adhemerval Zanella
89c9aa491a Fix for logb/logbf/logbl (bugs 13954/13955/13956) 
POSIX 2008 states that if the input for 'logb[f|l]' is a subnormal number
it should be treated as if it were normalized.  This means the
implementation should calculate the log2 of the mantissa and add it to the
subnormal exponent (-126 for float and -1022 for double and IBM long
double).  This patch takes care of that.
 2012-05-10 15:11:55 -05:00
Joseph Myers
d8b82cad1b Fix exp10 inaccuracy and exceptions (bugs 13884, 13914). 2012-05-06 18:23:44 +00:00
Joseph Myers
41498f4db1 Fix missing exceptions from exp (bugs 13787, 13922, 14036). 2012-05-05 19:37:39 +00:00
Andreas Schwab
fb5e92c979 Remove useless __ilogb*_finite aliases 2012-04-18 00:40:13 +02:00
Adhemerval Zanella
76da726532 Fix ilogb exception and errno (bug 6794) 
[BZ #6794]
Following Joseph comments about bug 6794, here is a proposed fix. It turned out
to be a large fix mainly because I had to move some file along to follow libm
files/names conventions.

Basically I have added wrappers (w_ilogb.c, w_ilogbf.c, w_ilogbl.c) that now calls
the symbol '__ieee754_ilogb'. The wrappers checks for '__ieee754_ilogb' output and
set the errno and raise exceptions as expected.

The '__ieee754_ilogb' is implemented in sysdeps. I have moved the 's_ilogb[f|l]' files
to e_ilogb[f|l] and renamed the '__ilogb[f|l]' to '__ieee754_ilogb[f|l]'.

I also found out a bug in i386 and x86-64 assembly coded ilogb implementation where
it raises a FE_DIVBYZERO when argument is '0.0'. I corrected this issue as well.

Finally I added the errno and FE_INVALID tests for 0.0, NaN and +-InF argument. Tested
on i386, x86-64, ppc32 and ppc64.
 2012-04-17 22:12:53 +02:00
Joseph Myers
d7dd945398 Fix missing overflow exceptions from pow (bug 13873). 2012-04-09 09:43:18 +00:00
Aurelien Jarno
f77f123206 Use __kernel_standard instead of __kernel_standard_f in exp wrapper (bug 13705). 2012-04-08 22:45:13 +00:00
Andreas Schwab
7998fa7899 Disable use of FMA instructions in branred 2012-03-21 23:58:50 +01:00
Joseph Myers
2460d3aa21 Fix pow of zero and infinity to large powers. 2012-03-21 12:16:00 +00:00
Joseph Myers
7726d6a95d Fix atan2 spurious exceptions (bug 11451). 2012-03-19 20:11:09 +00:00
Richard Henderson
0fe0f1f86f Create and use libc_feupdateenv_test. 
We can reduce the number of STMXCSR, and often we can avoid the
call to __feraiseexcept.
 2012-03-19 06:50:41 -07:00
Richard Henderson
eb92c487b3 Create and use SET_RESTORE_ROUND{,_NOEX,_53BIT}{,F,L}. 2012-03-19 06:49:44 -07:00
Richard Henderson
4851a949b4 Make inline __isnan, __isinf_ns, __finite generic. 
For code generation to stay identical on x86_64, this requires that
we define the fp word manipulation macros before including the
generic header.
 2012-03-19 06:47:43 -07:00
H.J. Lu
eb0f39b6b7 Make lround the alias of llround for wordsize-64 2012-03-16 15:20:45 -07:00
Joseph Myers
11b90b9f50 Fix tan, tanl for large inputs. 2012-03-16 20:05:37 +00:00
Joseph Myers
8848d99dce Implement ldbl-96 sinl / cosl / sincosl (bug 13851). 2012-03-16 12:30:05 +00:00
Andreas Jaeger
c4814b6b3a Implement and use libc_feholdexcept_setround_53bit and libc_feupdateenv_53bit 
so that double arithmetic in s_sin is done in 53 bit (without extend i386 double precision)
 2012-03-14 17:20:10 +01:00
Joseph Myers
f453b98b6b Clean up dbl-64 rint, nearbyint. 2012-03-13 14:12:44 +00:00
Richard Henderson
1ed0291c31 Use <> for math.h and math_private.h everywhere. 
Entire tree edited via find | grep | sed.
 2012-03-09 16:09:10 -08:00
Joseph Myers
b7cd39e8f8 Fix pow in non-default rounding modes (bug 3976). 2012-03-05 12:22:46 +00:00
Joseph Myers
804360ed83 Fix sin, cos, tan in non-default rounding modes (bug 3976). 2012-03-02 20:51:39 +00:00
Joseph Myers
a6d06d7b86 Fix scalbn, scalbln integer overflow. 2012-03-02 15:32:56 +00:00
Joseph Myers
28afd92dbd Fix exp in non-default rounding modes (bug 3976). 2012-03-02 15:12:53 +00:00
Andreas Schwab
c20105c398 Replace sysdeps/ieee754/dbl-64/k_tan.c with empty file 2012-02-26 16:10:46 +01:00
Aurelien Jarno
92221550d7 Use non-signaling floating-point comparisons in math functions. 2012-02-19 11:20:18 +01:00
Paul Eggert
59ba27a63a Replace FSF snail mail address with URLs. 2012-02-09 23:18:22 +00:00
Joseph Myers
8db2188281 Remove __STDC__ conditionals from libm. 2012-01-27 17:29:45 +00:00
Ulrich Drepper
0cc5ed3b01 Optimized acosh for 64-bit platforms 2012-01-11 22:01:09 -05:00
Ulrich Drepper
41d0e8696f Optimize scalbln 2012-01-11 12:49:16 -05:00
Ulrich Drepper
daa891c0e8 Optimize s_modf 2012-01-10 22:26:22 -05:00
Ulrich Drepper
a47a831ad8 Optimize ldexp and scalbn 2012-01-10 20:52:29 -05:00