php man page for get_align_matrix

get_align_matrix(3alleg4)					  Allegro manual					 get_align_matrix(3alleg4)

NAME
       get_align_matrix - Rotates a matrix to align it along specified coordinate vectors. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       void get_align_matrix(MATRIX *m, fixed xfront, yfront, zfront, fixed xup, fixed yup, fixed zup);

DESCRIPTION
       Rotates a matrix so that it is aligned along the specified coordinate vectors (they need not be normalized or perpendicular, but the up and
       front must not be equal). A front vector of 0,0,-1 and up vector of 0,1,0 will return the identity matrix.

SEE ALSO
       apply_matrix(3alleg4), get_camera_matrix(3alleg4)

Allegro 							   version 4.4.2					 get_align_matrix(3alleg4)