Routine Name: dotProduct

Author: Christopher Johnson

Language: C++11. Tested with g++ compiler.

Declared in “vectorCode.h”

Description/Purpose: Calculates the dot product of input Vectors.

Input: Vector u and Vector v, typedef of std::vector<double>;

Output: A double, indicating the dot product of input vectors.

Usage/Example: The user must first define 2 Vectors, after which the method may be called on the vectors.

Vector a = {1,2,3};
Vector a_bar = {1.1, 1.9, 3.2};
std::cout << "The dot product of A and A* is " << dotProduct(a,a_bar) << std::endl;

Output from the lines above:

The dot product of A and A* is 14.5

Implementation/Code: The following is the code for dotProduct(u,v)

double dotProduct (Vector u, Vector v)
{
double sum = 0;
for (int i=0;i<u.size();++i)
    sum += u[i]*v[i];
return sum;
}

Last Modified: October/2017