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Author SHA1 Message Date
Alan Modra 1b6adf888d PowerPC floating point little-endian [1 of 15] 
http://sourceware.org/ml/libc-alpha/2013-08/msg00081.html

This is the first of a series of patches to ban ieee854_long_double
and the ieee854_long_double macros when using IBM long double.  union
ieee854_long_double just isn't correct for IBM long double, especially
when little-endian, and pretending it is OK has allowed a number of
bugs to remain undetected in sysdeps/ieee754/ldbl-128ibm/.

This changes the few places in generic code that use it.

	* stdio-common/printf_size.c (__printf_size): Don't use
	union ieee854_long_double in fpnum union.
	* stdio-common/printf_fphex.c (__printf_fphex): Likewise.  Use
	signbit macro to retrieve sign from long double.
	* stdio-common/printf_fp.c (___printf_fp): Use signbit macro to
	retrieve sign from long double.
	* sysdeps/ieee754/ldbl-128ibm/printf_fphex.c: Adjust for fpnum change.
	* sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise.
	* sysdeps/ieee754/ldbl-96/printf_fphex.c: Likewise.
	* sysdeps/x86_64/fpu/printf_fphex.c: Likewise.
	* math/test-misc.c (main): Don't use union ieee854_long_double.
ports/
	* sysdeps/ia64/fpu/printf_fphex.c: Adjust for fpnum change.
 2013-10-04 10:31:41 +09:30
Thomas Schwinge 0007fc9bdd [BZ #15522] strtod ("nan(N)") returning a sNaN in some cases 2013-08-29 12:22:10 +02:00
Andreas Schwab ca0a6bc4c5 Fix cbrtl for ldbl-96 2013-08-13 09:45:02 +02:00
Ondrej Bilka 350635a59a Fix leading whitespaces. 2013-06-06 20:36:07 +02:00
Joseph Myers 9c84384cc1 Remove trailing whitespace. 2013-06-05 20:44:03 +00:00
Joseph Myers 0323d08657 Fix ldbl-96 hypotl of subnormals (bug 15529). 2013-05-24 20:52:55 +00:00
Joseph Myers 3e69426875 Fix nearbyint scheduling of arithmetic past fesetenv (bug 15490). 2013-05-19 18:40:25 +00:00
Joseph Myers d8cd06db62 Improve tgamma accuracy (bugs 2546, 2560, 5159, 15426). 2013-05-08 11:58:18 +00:00
Thomas Schwinge 572676160d New <math.h> macro named issignaling to check for a signaling NaN (sNaN). 
It is based on draft TS 18661 and currently enabled as a GNU extension.
 2013-04-02 13:51:02 +02:00
Joseph Myers d2f9799e7c Fix y1l spurious overflows for ldbl-96 (bug 15283). 2013-03-16 17:51:48 +00:00
Joseph Myers 568035b787 Update copyright notices with scripts/update-copyrights. 2013-01-02 19:05:09 +00:00
Joseph Myers 9984dd0126 Use hex float 64-bit values in ldbl-96 asinl (bug 14803). 2012-11-28 21:46:16 +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 31035e80a4 Quash warning in s_sincosl. 2012-08-17 23:44:53 +02:00
Marek Polacek 354691b7b5 Set up errno properly for yn. 2012-07-25 12:59:36 +02:00
Marek Polacek 541428fecf Fix ynl return value with LDBL_MIN. 2012-07-12 16:34:47 +02:00
Joseph Myers 4842e4fe5f Ensure additions are not scheduled after fetestexcept in fmaf and fmal. 2012-06-01 19:02:21 +00:00
Andreas Schwab 25dbcb277a Optimize handling of denormals in logb/logbf/logbl 2012-05-26 13:53:22 +02:00
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 41498f4db1 Fix missing exceptions from exp (bugs 13787, 13922, 14036). 2012-05-05 19:37:39 +00:00
Joseph Myers 7cb029ee6e Fix nexttoward bugs (bugs 2550, 2570). 2012-05-01 15:37:43 +00:00
Andreas Jaeger 7a99a61461 Finish ilogb changes 
[BZ# 6794]
	* sysdeps/ieee754/ldbl-96/s_ilogbl.c: Moved to ...
	* sysdeps/ieee754/ldbl-96/e_ilogbl.c: ... here.
	Rename __ilogbl to __ieee754_ilogbl and remove weak_alias.

	* sysdeps/ieee754/ldbl-128/s_ilogbl.c: Moved to ...
	* sysdeps/ieee754/ldbl-128/e_ilogbl.c: ... here.
	Rename __ilogbl to __ieee754_ilogbl and remove weak_alias.

	* sysdeps/ieee754/ldbl-64-128/s_ilogbl.c: Moved to ...
	* sysdeps/ieee754/ldbl-64-128/e_ilogbl.c: ... here.

	* sysdeps/sparc/sparc64/soft-fp/s_ilogbl.c: Moved to ...
	* sysdeps/sparc/sparc64/soft-fp/e_ilogbl.c: ... here.
	Rename __ilogbl to __ieee754_ilogbl and remove weak_alias.
 2012-04-18 14:31:43 +02:00
Joseph Myers 41bf21a1e7 Avoid overflows from long double functions using __kernel_standard. 2012-03-28 09:32:12 +00:00
Joseph Myers 11b90b9f50 Fix tan, tanl for large inputs. 2012-03-16 20:05:37 +00:00
Joseph Myers 96cbe7f482 Include program generating __sincosl_table in comment. 2012-03-16 15:18:19 +00:00
Joseph Myers 8848d99dce Implement ldbl-96 sinl / cosl / sincosl (bug 13851). 2012-03-16 12:30:05 +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
Marek Polacek a53b7a4e4b Fix up long double fphex. 2012-03-06 22:08:16 +01:00
Joseph Myers a6d06d7b86 Fix scalbn, scalbln integer overflow. 2012-03-02 15:32:56 +00:00
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 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
Ulrich Drepper 8ad89ef88d Avoid warnings about unused variable in 96-bit j0l and j1l 2011-11-12 02:20:29 -05:00
Ulrich Drepper 0c822ef988 Avoid warnings about unused variables in 96-bit hypotl 2011-11-12 02:15:07 -05:00
Ulrich Drepper d7826aa149 Use math_force_eval in more places 2011-10-25 10:52:45 -04:00
Ulrich Drepper bc62c2fb15 Optimization to some complex math functions 
Also, change last reference to __sqrt into __sqrt to easily.
 2011-10-22 00:32:39 -04:00
Ulrich Drepper bcf01e6d80 Optimize exp 
Add __exp*_finite optimizations and rewrite some wrappers.
 2011-10-15 20:22:59 -04:00
Ulrich Drepper 0ac5ae2335 Optimize libm 
libm is now somewhat integrated with gcc's -ffinite-math-only option
and lots of the wrapper functions have been optimized.
 2011-10-12 11:27:51 -04:00
Ulrich Drepper 7edb55ce06 Optimize use of isnan, isinf, finite 2011-10-08 10:18:26 -04:00