Top 10 C Math Projects

tinyexpr
tiny recursive descent expression parser, compiler, and evaluation engine for math expressions

linmath.h
a lean linear math library, aimed at graphics programming. Supports vec3, vec4, mat4x4 and quaternions

libtommath
LibTomMath is a free open source portable number theoretic multipleprecision integer library written entirely in C.

MIRACL
MIRACL Cryptographic SDK: Multiprecision Integer and Rational Arithmetic Cryptographic Library is a C software library that is widely regarded by developers as the gold standard open source SDK for elliptic curve cryptography (ECC).

apophenia
A C library for statistical and scientific computing

haskelligraph
Haskell bindings to igraph library.

nonlinearoptimization
Various iterative algorithms for optimization of nonlinear functions.

macadam
Typegeneric math and numerical library supporting c99 and cpp98 (header only).

morpheus
Lowlevel machine learning auxiliary functions

deka
Haskell decimal arithmetic
Index
What are some of the best opensource Math projects in C? This list will help you:
Project  Stars  

1  tinyexpr  806 
2  linmath.h  574 
3  libtommath  427 
4  MIRACL  384 
5  apophenia  170 
6  haskelligraph  6 
7  nonlinearoptimization  5 
8  macadam  4 
9  morpheus  1 
10  deka  1 