solver.h

#pragma once
#include "util.h"
#include <random>

//using RNG = std::mt19937;
using RNG = std::minstd_rand;
extern RNG eng;

void set_rand_seed(int seed);
void add_random_noise(const VectorXf& x, float sigma, VectorXf& result);
void set_random_mags(VectorXf& x, float sigma);
void initialize_random_noise(VectorXf& x, float sigma, size_t size);
void initialize_random_noise(std::vector<std::pair<float, VectorXf>>& xvec, float sigma, bool dual_problem);
void initialize_random_noise(std::vector<std::pair<float, VectorXf>>& xvec, const VectorXf& guess, float sigma);
VectorXf shuffle_x(const VectorXf& x);
void make_symmetric_o4(VectorXf& x);

float my_optimizer(float (*objective_function)(const VectorXf&), VectorXf& result, int max_iters,
                   float sigma, float beta, int clusters, bool use_symmetry, bool dual_problem);
void study_sample(float (*objective_function)(const VectorXf&), VectorXf& result, int max_iters,
                  int clusters, float sigma, float beta, bool use_symmetry);