Provided by: allegro4-doc_4.4.2-13_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.