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	Commit message (Expand)	Author	Age	Files	Lines
*	fenv support for ppc, untested•••based on code sent to the mailing list by nsz, with minor changes.	Rich Felker	2012-11-18	1	-0/+120
*	fix feholdexcept -- it needs to clear exceptions after saving environment	Rich Felker	2012-11-18	1	-0/+1
*	fenv: return FE_TONEAREST in dummy fegetround	Szabolcs Nagy	2012-11-14	1	-1/+1
*	math: use '#pragma STDC FENV_ACCESS ON' when fenv is accessed	Szabolcs Nagy	2012-11-13	1	-0/+1
*	floating point environment/exceptions support for mips	Rich Felker	2012-10-18	1	-0/+60
*	try fixing/optimizing x86_64 fenv exception code•••untested; may need followup-fixes.	Rich Felker	2012-03-17	1	-18/+23
*	optimize x86 feclearexcept•••if all exception flags will be cleared, we can avoid the expensive store/reload of the environment and just use the fnclex instruction.	Rich Felker	2012-03-17	1	-16/+20
*	fix x86_64 fe[gs]etround, analogous to nsz's x86 changes	Rich Felker	2012-03-17	1	-8/+9
*	minor 387 fenv optimizations	Rich Felker	2012-03-17	1	-6/+5
*	fix i386 fegetround and make fesetround faster•••Note that the new fesetround has slightly different semantics: Storing the floating-point environment with fnstenv makes the next fldenv (or fldcw) "non-signaling", so unmasked and pending exceptions does not invoke the exception handler. (These are rare since exceptions are handled immediately and by default all exceptions are masked anyway. But if one manually unmasks an exception in the control word then either sets the corresponding exception flag in the status word or the execution of an exception raising floating-point operation gets interrupted then it may happen). So the old implementation did not trap in some rare cases where the new implementation traps. However POSIX does not specify anything like the x87 exception handling traps and the fnstenv/fldenv pair is significantly slower than the fnstcw/fldcw pair (new code is about 5x faster here and it's dominated by the function call overhead).	nsz	2012-03-17	1	-10/+10
*	use type directives for fenv asm functions	Rich Felker	2011-06-28	2	-0/+14
*	x86_64 fenv support (untested; at least known to build successfully)	Rich Felker	2011-06-13	1	-0/+88
*	fix fesetround - it was writing to status word instead of control word	Rich Felker	2011-06-13	1	-3/+8
*	floating point environment, untested•••at present the i386 code does not support sse floating point, which is not part of the standard i386 abi. while it may be desirable to support it later, doing so will reduce performance and require some tricks to probe if sse support is present. this first commit is i386-only, but it should be trivial to port the asm to x86_64.	Rich Felker	2011-06-12	6	-0/+144