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// ==========================================================================
// $Source: /var/lib/cvs/Givaro/src/library/poly1/givpoly1cstor.inl,v $
// 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.
// Authors: T. Gautier
// $Id: givpoly1cstor.inl,v 1.15 2011-02-02 16:23:56 bboyer Exp $
// ==========================================================================
#ifndef __GIVARO_poly1_cstor_INL
#define __GIVARO_poly1_cstor_INL

namespace Givaro {
	template<class Domain>
	inline Poly1Dom<Domain,Dense>::Poly1Dom(const Domain& d, const Indeter& X ) :
		_domain(d), _x(X)
		, zero(1,d.zero), one(1,d.one)
		, mOne(1,d.mOne)
	{}

	template<class Domain>
	inline Poly1Dom<Domain,Dense>::Poly1Dom(const Self_t& P) :
		_domain(P._domain), _x(P._x)
		,zero(P.zero), one(P.one),mOne(P.mOne)
	{}

	template<class Domain>
	inline Poly1Dom<Domain,Dense>::~Poly1Dom()
	{
	}


	template<class Domain>
	inline typename Poly1Dom<Domain,Dense>::Rep& Poly1Dom<Domain,Dense>::init( Rep& P) const
	{ P.reallocate(0); return P; }

	/*
	   template<class Domain>
	   inline typename Poly1Dom<Domain,Dense>::Rep& Poly1Dom<Domain,Dense>::init( Rep& P, const Rep& Q ) const
	   {
	   Degree degQ;
	   degree(degQ,Q);
	   if (degQ <0) {
	   P.reallocate(0);
	   return P;
	   }
	   P.reallocate(++degQ);
	   for (int i=0; degQ>i; ++i)
	   _domain.init(P[i], Q[i]);
	   return P;
	   }
	   */

	template<class Domain>
	inline typename Poly1Dom<Domain,Dense>::Rep& Poly1Dom<Domain,Dense>::assign( Rep& P, const Rep& Q ) const
	{
		Degree degQ;
		degree(degQ,Q);
		if (degQ <0) {
			P.reallocate(0);
			return P;
		}
		P.reallocate((size_t)++degQ);
		// degQ >=0
		for (size_t i=0; (size_t)degQ.value()>i; ++i)
			_domain.assign(P[i], Q[i]);
		return P;
	}


	template<class Domain> template<class XXX>
	inline typename Poly1Dom<Domain,Dense>::Rep& Poly1Dom<Domain,Dense>::init( Rep& P, const XXX& Val ) const
	{
		P.reallocate(1);
		_domain.init(P[0], Val);
		return P;
	}


	template<class Domain>
	inline typename Poly1Dom<Domain,Dense>::Type_t& Poly1Dom<Domain,Dense>::convert(typename Poly1Dom<Domain,Dense>::Type_t & Val, const typename Poly1Dom<Domain,Dense>::Rep& P ) const
	{
		if (P.size())
			return _domain.assign(Val, P[0]);
		else
			return _domain.init(Val, 0UL);
	}

	template<class Domain> template<class XXX>
	inline XXX& Poly1Dom<Domain,Dense>::convert( XXX& Val, const typename Poly1Dom<Domain,Dense>::Rep& P ) const
	{
		if (P.size())
			return _domain.convert(Val, P[0]);
		else
			return _domain.convert(Val, 0UL);
	}

	template<class Domain> template<class UU, template<class XX> class Vect>
	inline Vect<UU>& Poly1Dom<Domain,Dense>::convert( Vect<UU>& Val, const typename Poly1Dom<Domain,Dense>::Rep& P ) const
	{
		Val.resize( P.size() );
		typename Vect<UU>::iterator vit = Val.begin();
		typename Rep::const_iterator        pit = P.begin();
		for ( ; pit != P.end(); ++pit, ++vit)
			_domain.convert(*vit, *pit);
		return Val;
	}



	template<class Domain>
	inline typename Poly1Dom<Domain,Dense>::Rep& Poly1Dom<Domain,Dense>::init( Rep& P, const Degree deg ) const
	{
		P.reallocate((size_t)value(deg+1));

		size_t sz = P.size();
		for (unsigned int i=0; i<sz-1; ++i)
			_domain.assign(P[i], _domain.zero);
		_domain.assign(P[sz-1], _domain.one);
		return P;
	}

	template<class Domain> template<class XXX>
	inline typename Poly1Dom<Domain,Dense>::Rep& Poly1Dom<Domain,Dense>::init
	( Rep& P, const Degree d, const XXX& Val ) const
	{
		long deg = value(d);
		P.reallocate((size_t)deg+1);
		assert (deg>=0);
			for (size_t i=0; i<(size_t)deg; ++i)
				_domain.assign(P[i], _domain.zero);
		_domain.init(P[(size_t)deg], Val);

		if (_domain.isZero(P[(size_t)deg])) {
			P.reallocate(0);
		}
		return P;
	}


	template<class Domain>
	inline typename Poly1Dom<Domain,Dense>::Rep& Poly1Dom<Domain,Dense>::assign
	( Rep& P, const Degree d, const Type_t& lcoeff ) const
	{
		long deg = value(d);
		if (_domain.isZero(lcoeff)) {
			P.reallocate(0);
		}
	       	else {
			P.reallocate((size_t)deg+1);
			assert (deg>=0);
			for (size_t i=0; i<(size_t)deg; ++i)
				_domain.assign(P[i], _domain.zero);
			_domain.assign(P[(size_t)deg], lcoeff);
		}
		return P;
	}

} // Givaro
#endif // __GIVARO_poly1_cstor_INL
/* -*- mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
// vim:sts=8:sw=8:ts=8:noet:sr:cino=>s,f0,{0,g0,(0,\:0,t0,+0,=s