trigonometry - Code motion optimization of trigonometric function[cos(\theta)] -

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As we know trigonometry functions take more CPU cycles if we want to reduce the CPU cycle, Need to implement optimization.

I have such code: 

 for  (i = 0; i & lt; n; i ++) {for (j = i + 1; j & Lt; n; j ++) {Val1 = Some values ​​after calculation val2 = cos (val1); }}

I now need to optimize (especially code speed optimization) function (KOS), so that it can take a lower CPU cycle.

Hint: We can use two arrays of size

result The result for the desired precision is the fastest way to use the precompute and lookup table.


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