euler 20151125

e-szam-verseny.c

/*
Function: 
Version: 2015.12.09.
Copyright: Harkály Gergő & Lehoczky Tamás | Miskolci Egyetem
Install:
Run: cmake .; make clean; make; ./e-szam-verseny;
*/

#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <error.h>
#include <pthread.h>
#include <time.h>
#include <sys/time.h>
#include <math.h>

/*
const char * euler()
{
	int N = DIGITS+9, a[DIGITS+9], x = 0;
	int n;
	a[0] = 0;
	a[1] = 2;
	char r[DIGITS];
	strcpy(r, "");
	for (n = 2; n < N; ++n)
	{
		a[n] = 1;
	}
	for ( ; N > 9; --N)
	{
		for (n = N - 1; n > 0; --n)
		{
			a[n] = x % n;
			x = 10 * a[n-1] + x/n;
		}
		strcat(r, x);
		printf("%s", r);
	}
	return r;
}
*/

typedef struct parameter
{
	char* sztring;
	int id;
} parameter;

// global variables
long double E20 = 2.71828182845904523536;
long double E29 = 2.71828182845904523536028747135;
int i = 1;
float n = 1.0;
long double sum1 = 0.0, sum2 = 0.0;

/* FUNCTIONS */
void* szum()
{
	unsigned long long int also = 1;
	long double sum=0;
	for(i=1; i<=20; i++, n++)
	{
		also = also*n;
		sum = sum + 1.0/also;
		//printf("sum1 aktuális érték: %.20Lf\n", sum);
	}
	printf("sum1 végértéke: %.20Lf\n", sum+1);
}
void* lim()
{
	for(i=1; i<=20; i++, n++)
	{
		sum2 = pow(1 + 1.0/n, n);
		//printf("sum2 aktuális érték: %.20Lf\n", sum2);
	}
	printf("sum2 végértéke: %.20Lf\n", sum2); 
}

/* MAIN */
void main(int argc, char** argv[])
{
	parameter* par= (parameter*)malloc(sizeof(parameter)*argc);
	pthread_t thread1, thread2;
	pthread_create(&thread1, NULL, szum, (void *) par);
	pthread_create(&thread2, NULL, lim, (void *) par);
	pthread_join(thread1, NULL);
	pthread_join(thread2, NULL);
	
	free(par);
}