examples/Integer/ilcm.C

NO DOC

// Copyright(c)'1994-2009 by The Givaro group
// This file is part of Givaro.
// Givaro is governed by the CeCILL-B license under French law
// and abiding by the rules of distribution of free software.
// see the COPYRIGHT file for more details.
 
#include <iostream>
using namespace std;
#include <stdlib.h>
#include <givaro/givintprime.h>
#include <givaro/givtimer.h>
#include <givaro/givinit.h>         // Givaro initialization
 
 
using namespace Givaro;
 
 
 
 
int main(int argc, char** argv)
{
    //  Givaro::Init(&argc, &argv);
 
 
    IntegerDom IP;
    IntegerDom::Element CM, g,a,b, c;
    int offset = 0;
    if (argc > ++offset) a = Integer(argv[offset]); else cin >> a;
    if (argc > ++offset) b = Integer(argv[offset]); else cin >> b;
 
    Timer tim; tim.clear(); tim.start();
    IP.gcd(g,a,b);
    IP.mul(CM, a, b);
    IP.divin(CM, g);
    for ( ; argc > ++offset; ) {
        c = Integer(argv[offset]);
        IP.gcd(g, CM, c);
        IP.divin(CM, g);
        IP.mulin(CM, c);
    }
    tim.stop();
    cout << CM << endl;
    cerr << "gcd+mul: " << tim << endl;
 
    tim.clear(); tim.start();
    IP.lcm(CM,a,b);
    //  cerr << "lcm(" << a << "," << b << ") = " << CM << endl;
    for ( offset = 2; argc > ++offset; ) {
        c = Integer(argv[offset]);
        //  cerr << "lcm(" << c << "," << CM << ") = " ;
        IP.lcmin(CM, c);
        //  cerr << CM << endl;
    }
    tim.stop();
    cout << CM << endl;
    cerr << "lcm: " << tim << endl;
 
    //  Givaro::End();
 
    return 0;
}
 
/* -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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