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A faster and more accurate sine and cosine function #97

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chenzt2020 opened this issue Mar 15, 2023 · 0 comments
Open

A faster and more accurate sine and cosine function #97

chenzt2020 opened this issue Mar 15, 2023 · 0 comments
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@chenzt2020
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Can we calculate trigonometric functions using the Remez algorithm? This is faster and more accurate than the table lookup method, and the range of arguments can be [-inf,inf]

Here is an example of fast sine and fast cosine:
https://github.com/chenzt2020/foc_learning/blob/main/3.fast_sin/fast_sin.h

benchmark
STM32F446 180MHz -Ofast
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@christophe0606 christophe0606 added the review Under review label Mar 15, 2023
@christophe0606 christophe0606 added future Future improvements and removed review Under review labels Apr 3, 2023
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@christophe0606 @chenzt2020