Provided by: allegro4-doc_4.4.3.1-4.1build3_all bug

NAME
       identity_matrix,  identity_matrix_f  - Global containing the identity matrix. Allegro game
       programming library.


SYNOPSIS
       #include <allegro.h>

       extern MATRIX identity_matrix;

       extern MATRIX_f identity_matrix_f;


DESCRIPTION
       Global variables containing the 'do nothing' identity matrix. Multiplying by the  identity
       matrix has no effect.