#pragma once
#include <iostream>
#include <vector>
using namespace std;

tuple<double, double> min_max_par(const vector<double> &v);
tuple<double, double, double> means_par(const vector<double>& v);

/**
  This function opens the ASCII-file named @p file_name and reads the
  double data into the C++ vector @p v.
  If the file  @p file_name does not exist then the code stops with an appropriate message.
  @param[in]    file_name   name of the ASCII-file
  @param[out]   v           C++ vector with double values
*/

void read_vector_from_file(const string& file_name, vector<double>& v);


/**
  This function opens the ASCII-file named @p file_name and rewrites its with the
  double data from the C++ vector @p v.
  If there are problems in opening/generating file  @p file_name
  then the code stops with an appropriate message.
  @param[in]    file_name   name of the ASCII-file
  @param[in]    v           C++ vector with double values
*/

void write_vector_to_file(const string& file_name, const vector<double>& v);

/**
  Fills the double-vector @p v with data from an input stream @p istr until this input stream
  ends regularily. The vector is cleared and its memory is automatically allocated.
  @param[in]    istr        input stream
  @param[out]    v           C++ vector with double values
  @warning     An exception is thrown in case of wrong data format or corrupted data.
*/
void fill_vector(istream& istr, vector<double>& v);