Benchmarking sigmoid function between C and D

[kinke]

On Saturday, 7 April 2018 at 21:53:23 UTC, Guillaume Piolat wrote:
> Have you tried LLVM intrinsics? say llvm_exp

While LLVM does have math intrinsics, they seem to boil down to C 
runtime calls in many/most cases. I.e., on Linux x86_64, 
`llvm_exp(real)` simply maps to the C function `expl()` and thus 
yields the same assembly as using `core.stdc.tgmath.exp(real)`: 
https://run.dlang.io/is/kjtM1n