C matrix libraries, suited for opengl on Android (NDK)

Question

I'm writing a rendering routine in C using opengl es 2.0 with NDK. I'm interested in (speed over precision) libraries for graphical-transformations on matrices, and any best practises you can recommend.

Writing my own functions is not improbable, but I thought I'd ask here before re-inventing the wheel. Thanks.

Answer 1

OpenGL Mathematics (GLM) seems to be a nice one.