operator-.cpp

vector <float> operator-(const vector <float>& m1, const vector <float>& m2){
    
    /*  Returns the difference between two vectors.
        Inputs:
            m1: vector
            m2: vector
        Output: vector, m1 - m2, difference between two vectors m1 and m2.
    */
    
    const unsigned long VECTOR_SIZE = m1.size();
    vector <float> difference (VECTOR_SIZE);
    
    for (unsigned i = 0; i != VECTOR_SIZE; ++i){
        difference[i] = m1[i] - m2[i];
    };
    
    return difference;
}