How to convert float to int or short

http://stereopsis.com/FPU.html
https://stackoverflow.com/questions/78619/what-is-the-fastest-way-to-convert-float-to-int-on-x86


SIMD
32 bit integer to 16 bit integer
__m256i _mm512_cvtepi32_epi16 (__m512i a)

floating point to 32 bit integer
__m512i _mm512_cvtps_epi32 (__m512 a)


unsigned short _cvtss_sh (float a, int rounding)

Get current CPU core frequency - linux

1. Get the current application's permission

"getuid()"

"geteuid()"

2. turbostat: https://github.com/torvalds/linux/blob/master/tools/power/x86/turbostat/turbostat.c 

 

  

Optimization

Agner FOG:  https://www.agner.org/optimize/?e=0#0