powf

Nvidia    9nlp

https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#virtual-memory-management    

 

Intel   

HA 0.5 nlp

LA 2

https://software.intel.com/content/www/us/en/develop/documentation/onemkl-vmperfdata/top/real-functions/power/pow.html

 

more accurate:

https://forums.developer.nvidia.com/t/a-more-accurate-and-faster-implementation-of-powf/48743