apply_matrix_f (3) - Linux Manuals
apply_matrix_f: Multiplies a point by a transformation matrix. Allegro game programming library.
NAME
apply_matrix, apply_matrix_f - Multiplies a point by a transformation matrix. Allegro game programming library.SYNOPSIS
#include <allegro.h>
void apply_matrix(const MATRIX *m, fixed x, y, z, *xout, *yout, *zout);
void apply_matrix_f(const MATRIX_f *m, float x, y, z, *xout, *yout, *zout);