Cosine Implementation in C

• musl

  17 169 8.5 C

  unofficial musl mirror git://git.musl-libc.org/musl (by ifduyue)

This is a faster implementation of cosine that utilises six static const double variables (C1, C2, C3, C4, C5, C6) to speed things up. These variables represent the coefficients of a polynomial approximation for the cosine function.

For the genuine article, check out: https://github.com/ifduyue/musl/blob/master/src/math/cos.c

• freebsd-src

  133 7,472 10.0 C

  The FreeBSD src tree publish-only repository. Experimenting with 'simple' pull requests....

  

Why does he link to his lame fork of musl for the official FreeBSD sources for libm, taken from Sun, used by musl?

https://github.com/freebsd/freebsd-src/blob/main/lib/msun/sr...

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• q

  1 36 3.7 C

  A fixed point library (Signed Q16.16) for embedded systems. (by howerj)

Personally I like Universal CORDIC, you can calculate much more than Cosine, but it tends to be slower. See https://en.wikibooks.org/wiki/Digital_Circuits/CORDIC#The_Un... and a somewhat janky fixed point library that implements it https://github.com/howerj/q

• FastTrig

  1 20 3.3 C++

  Arduino library with interpolated lookup for sin() and cos()

• Bessels.jl

  2 76 6.3 Julia

  Bessel functions for real arguments and orders

  

https://github.com/JuliaMath/Bessels.jl/blob/master/src/bess...

Thanks! I love it, so easy to understand and follow.

My favourite work on the subject is Fredrik Johansson's:

https://github.com/fredrik-johansson/arb

Whenever I feel down and without energy I just read something in there

• arb

  11 457 2.2 C

  Arb has been merged into FLINT -- use https://github.com/flintlib/flint/ instead

  

https://github.com/JuliaMath/Bessels.jl/blob/master/src/bess...

Thanks! I love it, so easy to understand and follow.

My favourite work on the subject is Fredrik Johansson's:

https://github.com/fredrik-johansson/arb

Whenever I feel down and without energy I just read something in there

• The-RLIBM-Project

  1 39 6.9 C

  A combined repository for all RLIBM prototypes

  

- The RLIBM project: https://github.com/rutgers-apl/The-RLIBM-Project/blob/main/l...

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• llvm-project

  349 25,563 10.0 C++

  The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.

  

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