Re: Performance of tables slower than built in?

[Ola Fosheim Grøstad via Digitalmars-d-learn]

On Wednesday, 22 May 2019 at 00:22:09 UTC, JS wrote:
        for(int i = 0; i < res; i++)
                QuarterSinTab[i] = sin(PI*(i/cast(double)res)); 

Btw, I think this creates a half sine, not a quarter, so you want 
(?):

     QuarterSinTab[i] = sin(PI*(0.5*i/cast(double)res));

        QuarterSinTab[$-1] = QuarterSinTab[0];

This creates a discontinuity if you create a quarter sine, in 
that case you probably wanted:

       QuarterSinTab[$-1] = sin(PI*0.5)

Otherwise you will never get 1 or -1.

But none of these affect performance.