VRdDotProd

Routine

double VRdDotProd (const double x1[], const double x2[], int N)

Purpose

Dot product of two double arrays

Description

               N-1
  VRfDotProd = SUM x1[i] * x2[i] .
               i=0

Parameters

<- double VRfDotProd

Dot product

-> const double x1[]

Input array (N elements)

-> const double x2[]

Input array (N elements)

-> int N

Number of elements in the arrays (may be zero)

Author / revision