Syntax
======

(DDOT n x incx y incy)

Purpose
=======

DDOT <- X^T Y

Double precision inner product of X,Y.

Arguments
=========

N (input) FIXNUM
Number of elements of X,Y to be operated on.

X (input) (SIMPLE-ARRAY DOUBLE-FLOAT (*))
INCX (input) FIXNUM
Determines the position of the elements in X. Usually
INCX is 1. If INCX is bigger than 1 then the elements
considered in the operations are:

X(0),X(2*INCX), ... , X(2*(N-1)*INCX)

Y (input) (SIMPLE-ARRAY DOUBLE-FLOAT (*))
INCY (input) FIXNUM
Determines the position of the elements in Y. Usually
INCY is 1. If INCY is bigger than 1 then the elements
considered in the operations are:

Y(0),Y(2*INCY), ... , Y(2*(N-1)*INCY)