/****************************************************
*   Elementary operations on Polynomial Fractions   *
* ------------------------------------------------- *
* Ref.: "Mathématiques en Turbo-Pascal By M. Ducamp *
* and A. Reverchon (vol 2), Eyrolles, Paris, 1988"  *
* [BIBLI 05].                                       *
* ------------------------------------------------- *
* Note: any program concerning polynomial fractions *
*       must be linked with files polynoms.cpp and  *
*       polfract.cpp.                               *
*                                                   *
*                C++ version by J-P Moreau, Paris.  *
*                       (www.jpmoreau.fr)           *
****************************************************/
#include <stdio.h>
#include <math.h>

#include "polynoms.h"
#include "polfract.h"   //define type ar_fraction

//-------------------------------------------------------
//Enter a polynomial fraction, example: x2 -5x +4 / x2 -1
// INPUT:  tx  prompting message
// OUTPUT: F(x)=P(x)/Q(x)  of type ar_fraction
// USES:   Function EnterPolynom (of file polynoms.cpp)
//-------------------------------------------------------
bool EnterPolFract(char *tx, ar_fraction *F) {
  int i;
  for (i=1; i<4; i++) {
    printf("%s\n",tx);
    if (EnterPolynom(" P(x) = ",&F->numer))
      if (EnterPolynom(" Q(x) = ",&F->denom)) return TRUE;
  }
  printf("\n");
  return FALSE;
}

//-------------------------------------------------------
//Display to screen a polynomial fraction F(x)=P(x)/Q(x)
//of type ar_fraction.
//USES: Function DisplayPolynom (of file polynoms.cpp)
//-------------------------------------------------------
void DisplayPolFract(ar_fraction *F) {
  printf("\n\n");
  DisplayPolynom(&F->numer); printf("\n");
  if (F->denom.degree>0 || F->denom.coeff[0].value!=1) {
    printf(" -------------\n");
    DisplayPolynom(&F->denom); printf("\n");
  }
}


//end of file polfract.cpp (june 2001).