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examples/Integer/lambda_inv.C
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// 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 <givaro/givintnumtheo.h>
#include <givaro/givtimer.h>
using namespace
Givaro
;
// Lambda function : order of a primitive invertible
// (invertible Element of maximal orbit size)
//
int
main
(
int
argc,
char
** argv)
{
IntNumTheoDom<>
IP;
IntNumTheoDom<>::Element
a,pr;
if
(argc > 1) a =
IntNumTheoDom<>::Element
(argv[1]);
else
std::cin >> a;
Timer
tim; tim.
clear
(); tim.
start
();
IP.
lambda_inv(pr, a);
tim.
stop
();
IntegerDom
().
write( std::cout, pr ) << std::endl;
std::cerr << tim << std::endl;
return
0;
}
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