why fmadd __ARM_FEATURE_FMA is not enabled by default?

Open wangyongxina opened this issue 5 years ago • 1 comments

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

Is there any reason ? thanks

Jul 06 '20 07:07 wangyongxina

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.

Jul 06 '20 08:07 kouchy