Today I did some investigations in a lookup function for sin(x). Sin(x) takes approx 120 micros and I wanted more speed, and I knew the price was precision. As I worked only in whole degrees a lookup table was the way to go. A straightforward float[361] (1444 bytes!) was not acceptable so folding w…

A faster sin() lookup function.

robtillaart August 18, 2011, 7:06pm 5

afraid that the error margin is a bit too high, but performance will be flabbergasting

Topic		Replies	Views
Fast fixed-point asin(). Can I improve this further? Tips? Other approaches? Programming Questions	5	1750	May 5, 2021
Realtime 16 Bit unsigned int Sin schneller als 8 Bit lookup table?! Deutsch	3	1350	May 6, 2021
Need ideas on how to make a small SINE lookup table. Project Guidance	12	8882	May 5, 2021
Fastest way to do sin(), cos() atan2() Programming Questions	59	40898	May 5, 2021
Speed of Sin(x) Project Guidance	13	8860	May 5, 2021