Speed of math function atan: comparison D and C++

bachmeier no at spam.net
Mon Mar 5 21:05:19 UTC 2018


On Monday, 5 March 2018 at 20:11:06 UTC, H. S. Teoh wrote:

> Walter has been adamant that we should always compute 
> std.math.* functions with the `real` type, which on x86 maps to 
> the non-IEEE 80-bit floats.  However, 80-bit floats have been 
> deprecated for a while now, and pretty much nobody cares to 
> improve their performance on newer CPUs, focusing instead on 
> SSE/MMX performance with 64-bit doubles.  People have been 
> clamoring for using 64-bit doubles by default rather than 
> 80-bit floats, but so far Walter has refused to budge.

I wonder if Ilya has worked on any of this for Mir.


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