Trigonometry functions

[alfcen]

For curiosity, how much slower is for instance sinD(x) compared with sin(x)?

 

[derez]

factor = cPi / 180

sinD(x) = sin( x * factor ) so how much slower can it be ?

 

[alfcen]

So one may assume. However, not sure how angular values are processed internally. Long ago, I used GFA-BASIC (now ancient history), which provided sinD(x), etc., but was about 10 times slower.

 

[Erel]

factor = cPi / 180

sinD(x) = sin( x * factor )

This is exactly the code.

 

[alfcen]

Sure it is, but the question is: which function executes faster, sinD(angular) or sin(radians)?

 

[Erel]

sinD calls sin. It is a little bit slower as it first multiplies the value. I don't think that you will see any difference between the two.

 

[alfcen]

Thank you very much Erel, that answers the question.