debian man page for apply_matrix

apply_matrix(3alleg4)						  Allegro manual					     apply_matrix(3alleg4)

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);

DESCRIPTION
       Multiplies the point (x, y, z) by the transformation matrix m, storing the result in (*xout, *yout, *zout).

SEE ALSO
       matrix_mul(3alleg4), ex12bit(3alleg4), ex3d(3alleg4), exstars(3alleg4)

Allegro 							   version 4.4.2					     apply_matrix(3alleg4)