php man page for dot_product

dot_product(3alleg4)						  Allegro manual					      dot_product(3alleg4)

NAME
       dot_product, dot_product_f - Calculates the dot product. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       fixed dot_product(fixed x1, y1, z1, x2, y2, z2);

       float dot_product_f(float x1, y1, z1, x2, y2, z2);

DESCRIPTION
       Calculates the dot product (x1, y1, z1) . (x2, y2, z2), returning the result.

SEE ALSO
       cross_product(3alleg4), normalize_vector(3alleg4), exstars(3alleg4)

Allegro 							   version 4.4.2					      dot_product(3alleg4)