dot_product

The dot product of two vectors (or two quaternions), the sum of the products of matching components. For unit vectors it is the cosine of the angle between them. Also spelled dot.

assert(dot_product(xyz(1, 2, 3), xyz(4, 5, 6)) == 32);
assert(dot(xy(1, 0), xy(0, 1)) == 0);

dot_product :: (a: Vector2, b: Vector2) -> float

dot_product :: (a: Vector3, b: Vector3) -> float

dot_product :: (a: Vector4, b: Vector4) -> float