2. EL 9
  3. blas
  4. ddot(3)

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ddot.f(3) LAPACK ddot.f(3)

NAME

ddot.f

SYNOPSIS

Functions/Subroutines


double precision function ddot (N, DX, INCX, DY, INCY)
DDOT

Function/Subroutine Documentation

double precision function ddot (integer N, double precision, dimension(*) DX, integer INCX, double precision, dimension(*) DY, integer INCY)

DDOT

Purpose: 



    DDOT forms the dot product of two vectors.


    uses unrolled loops for increments equal to one.

Parameters:

N 



          N is INTEGER


         number of elements in input vector(s)

DX



          DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX



          INCX is INTEGER


         storage spacing between elements of DX

DY



          DY is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

INCY



          INCY is INTEGER


         storage spacing between elements of DY

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

November 2017

Further Details: 



     jack dongarra, linpack, 3/11/78.


     modified 12/3/93, array(1) declarations changed to array(*)

Definition at line 84 of file ddot.f.

Author

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Tue Nov 14 2017 Version 3.8.0