On Wednesday, 22 May 2019 at 00:22:09 UTC, JS wrote:
I am trying to create some fast sin, sinc, and exponential routines to speed up some code by using tables... but it seems it's slower than the function itself?!?
There's intrinsic cpu instructions for some of those that can do the math faster than waiting on memory access.
It is quite likely calculating it is actually faster. Even carefully written and optimized tables tend to just have a very small win relative to the cpu nowadays.
