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why fmadd __ARM_FEATURE_FMA is not enabled by default? #21

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wangyongxina opened this issue Jul 6, 2020 · 1 comment

wangyongxina commented Jul 6, 2020

for ARM:
__ARM_FEATURE_FMA macro is not defined
for SSE:
fmadd could implement as：
_mm_fmadd_ps

Is there any reason ?
thanks

Member

kouchy commented Jul 6, 2020

Hi @wangyongxina,

I think that __ARM_FEATURE_FMA is defined by the compiler.

You're right for the _mm_fmadd_ps instruction, I missed that.
Feel free to send a pull request.

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