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dqdota(3P)		    Sun Performance Library		    dqdota(3P)

NAME
       dqdota - compute a double precision constant plus an extended precision
       constant plus the extended precision dot product of two	double	preci‐
       sion vectors x and y.

SYNOPSIS
       DOUBLE PRECISION FUNCTION DQDOTA(N, DB, QC, DX, INCX, DY, INCY)

       INTEGER N, INCX, INCY
       REAL * 16 QC
       DOUBLE PRECISION DB
       DOUBLE PRECISION DX(*), DY(*)

       DOUBLE PRECISION FUNCTION DQDOTA_64(N, DB, QC, DX, INCX, DY, INCY)

       INTEGER*8 N, INCX, INCY
       REAL * 16 QC
       DOUBLE PRECISION DB
       DOUBLE PRECISION DX(*), DY(*)

   F95 INTERFACE
       REAL(8) FUNCTION DQDOTA(N, DB, QC, DX, INCX, DY, INCY)

       INTEGER :: N, INCX, INCY
       REAL(16) :: QC
       REAL(8) :: DB
       REAL(8), DIMENSION(:) :: DX, DY

       REAL(8) FUNCTION DQDOTA_64(N, DB, QC, DX, INCX, DY, INCY)

       INTEGER(8) :: N, INCX, INCY
       REAL(16) :: QC
       REAL(8) :: DB
       REAL(8), DIMENSION(:) :: DX, DY

   C INTERFACE
       #include <sunperf.h>

       double  dqdota(int n, double db, long double *qc, double *dx, int incx,
		 double *dy, int incy);

       double dqdota_64(long n, double db, long double *qc, double  *dx,  long
		 incx, double *dy, long incy);

PURPOSE
       dqdota  compute	a double precision constant plus an extended precision
       constant plus the extended precision dot product of two	double	preci‐
       sion vectors x and y.

ARGUMENTS
       N (input)
		 On  entry,  N specifies the number of elements in the vector.
		 If N  <=  0  then  the	 function  returns  the	 value	DB+QC.
		 Unchanged on exit.

       DB (input)
		 On  entry,  the  constant  that  is  added to the dot product
		 before the result is returned.	 Unchanged on exit.

       QC (input/output)
		 On entry, the extended precision constant to be added to  the
		 dot product.  On exit, the extended precision result.

       DX (input)
		 On entry, the incremented array DX must contain the vector x.
		 Unchanged on exit.

       INCX (input)
		 On entry, INCX specifies the increment for  the  elements  of
		 DX.  Unchanged on exit.

       DY (input)
		 On entry, the incremented array DY must contain the vector y.
		 Unchanged on exit.

       INCY (input)
		 On entry, INCY specifies the increment for  the  elements  of
		 DY.  Unchanged on exit.

Note:
       dqdota does not exist in X86 libraries.

				  6 Mar 2009			    dqdota(3P)

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