identity_matrix - Man Page
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.
Referenced By
The man page identity_matrix_f(3) is an alias of identity_matrix(3).
version 4.4.3 Allegro manual