DOT

DOT - dot product

Usage:

DOT A B

Inputs:

A	number or vector
B	same type as A

Outputs:

Y	dot product A.B (number)

Function:

Compute the dot product of A and B.

if A and B are numbers:	Y = A.B
if A and B are vectors:	Y = A[0].B[0] + ... + A[n-1].B[n-1];
	B