Esempio n. 1
0
PtPoly PolySubtraction (PtPoly ppoly1, PtPoly ppoly2)
{
  PtPoly Sub; unsigned int Degree, I, Invert = 0;

  if (!ValidPolys (ppoly1, ppoly2)) return NULL;

  if(ppoly1->Degree < ppoly2->Degree) {
    Degree = ppoly1->Degree ;
    Invert = 1;
  }else{ 
    Degree = ppoly2-> Degree;
  }

  if ((Sub = PolyCopy ((ppoly1->Degree >= ppoly2->Degree) ? ppoly1 : ppoly2)) == NULL) { Error = NO_MEM; return NULL; }

  Error = OK;

  if (Invert) Sub = PolySymmetrical(Sub);
  
  for (I = 0; I <= Degree; I++)
    Sub->Poly[I] = ppoly1->Poly[I] - ppoly2->Poly[I];

  ReducePoly(Sub);

  return Sub;
}
Esempio n. 2
0
int main (void)
{
	PtPoly poly1 = NULL, poly2 = NULL, poly3 = NULL;
	char filename[21]; int st, degree, i; double coef;

	system ("clear");
	printf ("\nLer polinomio do ficheiro - Read polynomial from a text file\n");
	do
	{
  		printf ("Nome do ficheiro (Filename) -> ");
		st = scanf ("%20[^\n]", filename);
		scanf ("%*[^\n]"); scanf ("%*c");
	} while (st == 0);

	poly1 = PolyCreateFile (filename);
	printf ("\nPolinomio lido do ficheiro - Polynomial acquired from text file %s\n", filename);
	WritePoly (poly1);

	poly2 = PolySymmetrical (poly1);
	printf ("\nPolinomio simetrico - Symmetrical polynomial\n");
	WritePoly (poly2);
	PolyDestroy (&poly2);

	printf ("\nLer polinomio do teclado - Read polynomial from keyboard\n");
	do
	{
		printf ("grau do polinomio (polynomial's degree)? "); scanf ("%d", &degree);
		scanf ("%*[^\n]"); scanf ("%*c");
	} while (degree < 0);

	poly2 = PolyCreate (degree);
    	for (i = 0; i <= degree; i++)
	{
		do
		{
			printf ("Coeficiente do polinomio (polynomial's coefficient)? "); st = scanf ("%lf", &coef);
			scanf ("%*[^\n]"); scanf ("%*c");
		} while (st == 0);
		PolyModifyCoefficient (poly2, i, coef);
	}

	printf ("\nPolinomio lido do teclado - Polynomial acquired from keyboard\n");
	WritePoly (poly2);

	printf ("\nEscrever polinomio no ficheiro - Storing the polynomial in a text file\n");
	do
	{
  		printf ("Nome do ficheiro (Filename) -> ");
		st = scanf ("%20[^\n]", filename);
		scanf ("%*[^\n]"); scanf ("%*c");
	} while (st == 0);
	PolyStoreFile (poly2, filename);

	poly3 = PolyAddition (poly1, poly2);
	printf ("\nPolinomio soma - Sum polynomial\n");
	WritePoly (poly3);

	PolyDestroy (&poly3);
	poly3 = PolySubtraction (poly1, poly2);
	printf ("\nPolinomio diferenca - Difference polynomial\n");
	WritePoly (poly3);

	PolyDestroy (&poly3);
	poly3 = PolyMultiplication (poly1, poly2);
	printf ("\nPolinomio produto - Product polynomial\n");
	WritePoly (poly3);

	printf ("\nDestruir os polinomios - Releasing the polynomials\n");
	PolyDestroy (&poly1);
	PolyDestroy (&poly2);
	PolyDestroy (&poly3);

	WritePoly (poly3);

	return 0;
}