#include "stdafx.h"
#include <iostream>
#include <iomanip>
#include <windows.h>

using namespace std;

int main()
{
	typedef double(*myf_1)(double, double, double);
	typedef double(*myf_math)(double, double);
	typedef const char*(*FName)();
	if (!(LoadLibraryEx(L"lab9dll.dll", 0, LOAD_LIBRARY_AS_DATAFILE)))
	{
		cout << "LoadLibraryError" << endl;
		system("pause");
		exit(0);
	}
	HINSTANCE ptrToDll = LoadLibrary(L"lab9dll.dll");
	myf_1 myFunc = (myf_1)GetProcAddress(ptrToDll, "myf_1");
	myf_math Func = (myf_math)GetProcAddress(ptrToDll, "myf_math");
	FName Name = (FName)GetProcAddress(ptrToDll, "FName");
	if (!(ptrToDll && myFunc && Func && Name))
	{
		cout << "FunctionsError" << endl;
		system("pause");
		exit(0);
	}
m1:	double eps = -1, xstart = 0, xend = 0, dx = 1, a = 0;
	cout << "eps = ";
	cin >> eps;
	cin.clear();
	cin.ignore(cin.rdbuf()->in_avail());
	cout << "x start = ";
	cin >> xstart;
	cin.clear();
	cin.ignore(cin.rdbuf()->in_avail());
	cout << "x end = ";
	cin >> xend;
	cin.clear();
	cin.ignore(cin.rdbuf()->in_avail());
	cout << "dx = ";
	cin >> dx;
	cin.clear();
	cin.ignore(cin.rdbuf()->in_avail());
	cout << "a = ";
	cin >> a;
	if ((eps <= 0) || ((xstart != xend) && (dx == 0)) || ((xstart < xend) && (dx < 0)) || ((xstart > xend) && (dx > 0) || cin.fail()))
	{
		cout << "\nError\n\n";
		cin.clear();
		cin.ignore(cin.rdbuf()->in_avail());
		goto m1;
	}
	printf("______________________________________________________________\n");
	printf("|%-10s|%3s%-17s|%-17s|%-10s|\n", "x", "My ", Name(), Name(), "delta");
	printf("--------------------------------------------------------------\n");
	if (dx == 0)
		dx = 1;
	for (; dx > 0 ? xstart <= xend : xstart >= xend; xstart = round((xstart + dx) * 10000000) / 10000000)
		printf("|%10.7lf|%20.7lf|%17.7lf|%10.7lf|\n", xstart, myFunc(eps, a, xstart), Func(a, xstart), sqrt(fabs(myFunc(eps, a, xstart) * myFunc(eps, a, xstart) - Func(a, xstart) * Func(a, xstart))));
	printf("--------------------------------------------------------------\n");
	double xideal = 0;
m2:	cout << "x ideal = ";
	cin >> xideal;
	if (cin.fail())
	{
		cout << "\nError\n\n";
		cin.clear();
		cin.ignore(cin.rdbuf()->in_avail());
		goto m2;
	}
	printf("______________________________________________________________\n");
	printf("|%-10s|%-3s%-17s|%-17s|%-10s|\n", "eps", "My ", Name(), Name(), "delta");
	printf("--------------------------------------------------------------\n");
	for (double eps = 0.1; eps >= 0.0000001; eps *= 0.1)
		printf("|%10.7lf|%20.7lf|%17.7lf|%10.7lf|\n", eps, myFunc(eps, a, xideal), Func(a, xideal), sqrt(fabs(myFunc(eps, a, xideal) * myFunc(eps, a, xideal) - Func(a, xideal) * Func(a, xideal))));
	printf("--------------------------------------------------------------\n");
	FreeLibrary(ptrToDll);
	system("pause");
	return 0;
}