NAME

zdotu - Compute the dot product of two vectors x and y. 

SYNOPSIS

COMPLEX∗16 FUNCTION ZDOTU (N, X, INCY, Y, INCY )

INTEGER INCX, INCY, N

COMPLEX∗16    X( ∗ ), Y( ∗ )

PURPOSE

ZDOTU - Compute the dot product of x and y where x and y are n-vectors. 
#include <sunperf.h>

doublecomplex ∗zdotu(int n, doublecomplex ∗cx, int incx, doublecomplex ∗cy, int incy);
 

PARAMETERS

N - INTEGER. 
On entry, N specifies the number of elements in the vector.  If N is not positive then the function returns the value 0.0.  Unchanged on exit.

X - COMPLEX∗16 array of DIMENSION at least
( 1 + ( n - 1 )∗abs( INCX ) ). On entry, the incremented array X must contain the vector x.  On exit, the y vector.

INCX - INTEGER. 
On entry, INCX specifies the increment for the elements of X. INCX must not be zero. Unchanged on exit.

Y - COMPLEX∗16 array of DIMENSION at least
( 1 + ( m - 1 )∗abs( INCY ) ). On entry, the incremented array Y must contain the vector y. Unchanged on exit.

INCY - INTEGER. 
On entry, INCY specifies the increment for the elements of Y. INCY must not be zero. Unchanged on exit.

SunOS 5.0  —  Last change: 10 Dec 1998