Jragonmiris/mathgl — pull request #6 by GlenKelley (2013-09-29 23:40:03+00:00)
Title: Fixed quaternion to rotation matrix

One more fix, this time when a quaternion is converted to a 4x4 rotation matrix.

Also, its worth noting that other people have forked your libraries and made exactly these changes, over two months ago.

https://github.com/krux02/mathgl/commit/d51e3a47718952db251ee2d5b7499b6393d3aede