NAME

dqdoti - Compute a constant plus the extended precision dot product of two double precision vectors x and y. 

SYNOPSIS

DOUBLE PRECISION FUNCTION DQDOTI (N, B, C, X, INCY, Y, INCY )

INTEGER INCX, INCY, N

DOUBLE PRECISION    X( ∗ ), Y( ∗ )

#include <sunperf.h>

double dqdoti(int n, double b, long double ∗dc, double ∗dx, int incx, double ∗dy, int incy) ;

PURPOSE

DQDOTI - Compute a constant plus the double precision dot product of x and y where x and y are double precision n-vectors. 
 

PARAMETERS

N - INTEGER. 
On entry, N specifies the number of elements in the vector.  If N <= 0 then the function returns the value B.  Unchanged on exit.

B - DOUBLE PRECISION. 
On entry, the constant that is added to the dot product before the result is returned.  Unchanged on exit.

C - REAL∗16. 
On exit, the extended precision result.

X - DOUBLE PRECISION array of DIMENSION at least
( 1 + ( n - 1 )∗abs( INCX ) ). On entry, the incremented array X must contain the vector x.  Unchanged on exit.

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

Y - DOUBLE PRECISION 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