opti.h

#ifndef _OPTI_H_
#define _OPTI_H_

#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stdbool.h>



typedef struct Point Point;

struct Point 
{
   double x, y;
};

Point* line(double a, double b);
double popow(double v, double w);
double double_random(double min, double max);
Point* cloud1(Point* a_line);
Point* cloud2(double *a, double *b);
double random_point_in_cloud2(Point* my_cloud);
Point* cloud3(double *a, double *b);
Point* cloud_test();
double* averages(Point* my_cloud, int cloud_size);
double* a_and_b(double* my_averages);
double* sums(Point* my_cloud, int cloud_size);
double gradient(double *a, double *b, Point* my_cloud, int cloud_size, bool is_a);
void gradient_descent_v2(double *a, double *b, Point* my_cloud, double cost);
double cost(double *a, double *b, Point* my_cloud);
void gradient_descent_v4(double *a, double *b, Point* my_cloud);
/*void gradient_one(double* a, double* b, Point* my_cloud, double* current_cost);
void gradient_descent_v3(double* a, double* b, Point* my_cloud);*/
double cost2(double *a, double *b, double *new_a, double *new_b);

#endif