Contents
cdotu - compute the dot product of two vectors x and y.
COMPLEX FUNCTION CDOTU(N, X, INCX, Y, INCY)
COMPLEX X(*), Y(*)
INTEGER N, INCX, INCY
COMPLEX FUNCTION CDOTU_64(N, X, INCX, Y, INCY)
COMPLEX X(*), Y(*)
INTEGER*8 N, INCX, INCY
F95 INTERFACE
COMPLEX FUNCTION DOT([N], X, [INCX], Y, [INCY])
COMPLEX, DIMENSION(:) :: X, Y
INTEGER :: N, INCX, INCY
COMPLEX FUNCTION DOT_64([N], X, [INCX], Y, [INCY])
COMPLEX, DIMENSION(:) :: X, Y
INTEGER(8) :: N, INCX, INCY
C INTERFACE
#include <sunperf.h>
complex cdotu(int n, complex *x, int incx, complex *y, int
incy);
complex cdotu_64(long n, complex *x, long incx, complex *y,
long incy);
cdotu compute the dot product of x and y where x and y are
n-vectors.
N (input)
On entry, N specifies the number of elements in
the vector. If N is not positive then the func-
tion returns the value 0.0. Unchanged on exit.
X (input)
of DIMENSION at least ( 1 + ( n - 1 )*abs( INCX )
). On entry, the incremented array X must contain
the vector x. Unchanged on exit.
INCX (input)
On entry, INCX specifies the increment for the
elements of X. Unchanged on exit.
Y (input)
of DIMENSION at least ( 1 + ( n - 1 )*abs( INCY )
). On entry, the incremented array Y must contain
the vector y. Unchanged on exit.
INCY (input)
On entry, INCY specifies the increment for the
elements of Y. Unchanged on exit.