Displaying 5 results from an estimated 5 matches for "fdenormal".
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denormal
2019 Sep 16
3
Handling of FP denormal values
...ing FP denormals. There is currently some support for variations in the way denormals are handled, but it isn't consistent across architectures and generally feels kind of half-baked. I'd like to discuss possible solutions to this problem.
First, there is a clang command line option:
-fdenormal-fp-math=<arg>
Select which denormal numbers the code is permitted to require.
Valid values are: ieee, preserve-sign, and positive-zero, which
correspond to IEEE 754 denormal numbers, the sign of a flushed-to-zero
number is preserved in the sign of 0, denormals are flushed to...
2020 Jan 27
11
Floating point semantic modes
...d above.
-ffast-math
Equivalent to -ffp-model=fast. (I'm not sure that's currently true.)
-f[no-]math-errno
-ffp-contract={on|off|fast}
-f[no-]honor-infinities
-f[no-]honor-nans
-f[no-]associative-math
-f[no-]reciprocal-math
-f[no-]signed-zeros
-f[no-]trapping-math
-f[no-]rounding-math
-fdenormal-fp-math={ieee, preservesign, positivezero}
-fdenormal-fp-math-fp32={ieee, preservesign, positivezero}
-ffp-exception-behavior={ignore,maytrap,strict}
Each of these has a 1-to-1 correspondance to an FP semantic mode.
(I think several of these should set "except_behavior" to "ignor...
2020 Jan 29
2
Floating point semantic modes
...d above.
-ffast-math
Equivalent to -ffp-model=fast. (I'm not sure that's currently true.)
-f[no-]math-errno
-ffp-contract={on|off|fast}
-f[no-]honor-infinities
-f[no-]honor-nans
-f[no-]associative-math
-f[no-]reciprocal-math
-f[no-]signed-zeros
-f[no-]trapping-math
-f[no-]rounding-math
-fdenormal-fp-math={ieee, preservesign, positivezero}
-fdenormal-fp-math-fp32={ieee, preservesign, positivezero}
-ffp-exception-behavior={ignore,maytrap,strict}
Each of these has a 1-to-1 correspondance to an FP semantic mode.
(I think several of these should set "except_behavior" to "ignor...
2020 Jan 28
3
Floating point semantic modes
...;
> > -f[no-]math-errno
> > -ffp-contract={on|off|fast}
> > -f[no-]honor-infinities
> > -f[no-]honor-nans
> > -f[no-]associative-math
> > -f[no-]reciprocal-math
> > -f[no-]signed-zeros
> > -f[no-]trapping-math
> > -f[no-]rounding-math
> > -fdenormal-fp-math={ieee, preservesign, positivezero}
> > -fdenormal-fp-math-fp32={ieee, preservesign, positivezero}
> > -ffp-exception-behavior={ignore,maytrap,strict}
> > Each of these has a 1-to-1 correspondance to an FP semantic mode.
> > (I think several of these should set &q...
2020 Jan 29
3
Floating point semantic modes
...(I'm not sure that's currently true.)
>
> -f[no-]math-errno
> -ffp-contract={on|off|fast}
> -f[no-]honor-infinities
> -f[no-]honor-nans
> -f[no-]associative-math
> -f[no-]reciprocal-math
> -f[no-]signed-zeros
> -f[no-]trapping-math
> -f[no-]rounding-math
> -fdenormal-fp-math={ieee, preservesign, positivezero}
> -fdenormal-fp-math-fp32={ieee, preservesign, positivezero}
> -ffp-exception-behavior={ignore,maytrap,strict}
> Each of these has a 1-to-1 correspondance to an FP semantic mode.
> (I think several of these should set "except_behavio...