#ifndef __vec4_dot__
#define __vec4_dot__

#include "type.h"


/**
 * Calculates the dot product of two vec4's
 *
 * @param {vec4} a the first operand
 * @param {vec4} b the second operand
 * @returns {Number} dot product of a and b
 */
float vec4_dot (vec4 a, vec4 b) {
  return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
}

#endif