perf-test.cpp

(1a)

//takes in two "points" (arrays of doubles), and returns an array of doubles that contains
//the slope and the y intercept of the line between the two points
double * line(double * pt1, double * pt2){
        double xTmp, yTmp;
        xTmp = (pt2[1]-pt1[1])/(pt2[0]-pt1[0]);
        yTmp = pt1[1] - xTmp*pt1[0];
        pt1[0] = xTmp;
        pt1[1] = yTmp;                                                                             
        return pt1;
}