examples/Polynomial/isprimitive.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>
#include <stdlib.h>
#include <givaro/gfq.h>
#include <givaro/givpoly1factor.h>
#include <givaro/givtimer.h>
 
// using namespace std;
 
using namespace Givaro;
 
 
int main(int argc, char** argv)
{
    typedef GFqDom<int64_t>::Residu_t UT;
    UT MOD;
    if (argc > 1)
        MOD = (UT)atoi(argv[1]);
    else
        std::cin >> MOD;
    uint64_t expo = 1;
    if (argc > 2) expo = (uint64_t)atoi(argv[2]);
 
    GFqDom<int64_t> F(MOD, expo);
 
    Poly1FactorDom<GFqDom<int64_t>, Dense> FD(F,Indeter("X"));
    Poly1FactorDom<GFqDom<int64_t>, Dense>::Element P, IXE;
    FD.init(IXE,Degree(1),F.one);
    FD.read( std::cin, P );
 
    Timer tim; tim.clear(); tim.start();
    bool f = FD.is_prim_root(IXE, P );
    tim.stop();
 
    F.write( FD.write( std::cout, P ) << " is " << (f?"":"not ") << "primitive in " ) << std::endl;
 
    // std::cout << f << std::endl;
    std::cerr << tim << std::endl;
 
    return 0;
}
 
/* -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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