Flight controller firmware.

A simple, header only math library for the C Language.

A quaternion based sensor fusion algorithm that fuses accelerometers and gyroscopes and optionally magnetometers

A PARI/GP package for integral binary quadratic forms and quaternion algebras over Q, with an emphasis on indefinite quadratic forms and indefinite quaternion algebras.

HPML is a high performance mathematics library for computational science & 3d applications