Contents

• NAME
• SYNOPSIS
  • F95 INTERFACE
  • C INTERFACE
• PURPOSE
• ARGUMENTS

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, DB, QC, DX, INCX, DY, INCY)

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

     DOUBLE PRECISION FUNCTION DQDOTI_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 DQDOTI(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 DQDOTI_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 dqdoti(int n, double db, long double *qc, double *dx,
               int incx, double *dy, int incy);

     double dqdoti_64(long n, double db, long double *qc,  double
               *dx, long incx, double *dy, long incy);

PURPOSE

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

ARGUMENTS

     N (input)
               On entry, N specifies the number  of  elements  in
               the  vector.   If N <= 0 then the function returns
               the value DB.  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 (output)
               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:
     dqdoti does not exist in X86 libraries.