dsdot (3p)

Name

dsdot - sion vectors x and y.

Synopsis

DOUBLE PRECISION FUNCTION DSDOT(N, X, INCX, Y, INCY)

INTEGER N, INCX, INCY
REAL X(*), Y(*)

DOUBLE PRECISION FUNCTION DSDOT_64(N, X, INCX, Y, INCY)

INTEGER*8 N, INCX, INCY
REAL X(*), Y(*)




F95 INTERFACE
REAL(8) FUNCTION DSDOT(N, X, INCX, Y, INCY)

INTEGER :: N, INCX, INCY
REAL, DIMENSION(:) :: X, Y

REAL(8) FUNCTION DSDOT_64(N, X, INCX, Y, INCY)

INTEGER(8) :: N, INCX, INCY
REAL, DIMENSION(:) :: X, Y




C INTERFACE
#include <sunperf.h>

double dsdot(int n, float *x, int incx, float *y, int incy);

double dsdot_64(long n, float *x, long incx, float *y, long incy);

Description

Oracle Solaris Studio Performance Library                            dsdot(3P)



NAME
       dsdot  -  compute the double precision dot product of two single preci-
       sion vectors x and y.


SYNOPSIS
       DOUBLE PRECISION FUNCTION DSDOT(N, X, INCX, Y, INCY)

       INTEGER N, INCX, INCY
       REAL X(*), Y(*)

       DOUBLE PRECISION FUNCTION DSDOT_64(N, X, INCX, Y, INCY)

       INTEGER*8 N, INCX, INCY
       REAL X(*), Y(*)




   F95 INTERFACE
       REAL(8) FUNCTION DSDOT(N, X, INCX, Y, INCY)

       INTEGER :: N, INCX, INCY
       REAL, DIMENSION(:) :: X, Y

       REAL(8) FUNCTION DSDOT_64(N, X, INCX, Y, INCY)

       INTEGER(8) :: N, INCX, INCY
       REAL, DIMENSION(:) :: X, Y




   C INTERFACE
       #include <sunperf.h>

       double dsdot(int n, float *x, int incx, float *y, int incy);

       double dsdot_64(long n, float *x, long incx, float *y, long incy);



PURPOSE
       dsdot compute the double precision dot product of x and y where x and y
       are single precision n-vectors.


ARGUMENTS
       N (input)
                 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 (input)
                 (  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.
                 INCX must not be zero.  Unchanged on exit.


       Y (input)
                 (  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.
                 INCY must not be zero.  Unchanged on exit.




                                  7 Nov 2015                         dsdot(3P)