DOUBLE COMPLEX FUNCTION ZDOTU(N,CX,INCX,CY,INCY)
 
computes the (unconjugated) dot product of two vectors.
This is the simple sum of the product of the entries of the vectors.
 
N      Input, INTEGER N, number of elements in the vectors.
 
CX     Input, COMPLEX*16 CX(N), operand.
 
INCX   Input, INTEGER INCX, increment between elements of CX.  For contiguous
       elements, INCX = 1.
 
CY     Input, COMPLEX*16 CY(N), operand.
 
INCY   Input, INTEGER INCY, increment between elements of CY.  For contiguous
       elements, INCY = 1.
 
ZDOTU  Output, COMPLEX*16 ZDOTU, the unconjugated dot product of CX and CY.