ppcm.c

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/*
 
  $Id: ppcm.c 1669 2019-06-26 17:24:57Z coelho $
 
  Copyright 1989-2016 MINES ParisTech
 
  This file is part of Linear/C3 Library.
 
  Linear/C3 Library is free software: you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  any later version.
 
  Linear/C3 Library is distributed in the hope that it will be useful, but WITHOUT ANY
  WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.
 
  See the GNU Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public License
  along with Linear/C3 Library.  If not, see <http://www.gnu.org/licenses/>.
 
*/
 
/* package arithmetique
 */
 
/*LINTLIBRARY*/
 
#ifdef HAVE_CONFIG_H
    #include "config.h"
#endif
#include <stdio.h>
 
#include "arithmetique.h"
#include "linear_assert.h"
 
/* int ppcm(int i, int j): plus petit entier positif divisible par i et j
 *
 * Ancien nom et ancien type: void lcm(int i, int j, int *pk)
 */
Value ppcm(Value i, Value j)
{
    if (value_neg_p(i)) i = value_uminus(i);
    if (value_neg_p(j)) j = value_uminus(j);
 
    if (value_zero_p(i) || value_zero_p(j)) 
        return VALUE_ZERO;
    else {
        Value d = pgcd(i,j);
        d = value_div(i,d);
        return value_mult(d,j);
    }
}