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litteral.hh
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/**
* @file
*
* @author Lucas Frérot <lucas.frerot@epfl.ch>
*
* @section LICENSE
*
* Copyright (©) 2018-2021 EPFL (Ecole Polytechnique Fédérale de
* Lausanne) Laboratory (LSMS - Laboratoire de Simulation en Mécanique des
* Solides)
*
* Expolit 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 (at your option) any
* later version.
*
* Expolit 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 Expolit. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef LITTERAL_HH
#define LITTERAL_HH
#include "operations.hh"
#include "polynomial.hh"
#include "types.hh"
namespace expolit {
template <typename Tag>
struct Litteral : Expression<Litteral<Tag>> {
using tag = Tag;
Litteral() = default;
};
/// Substitue litteral
template <typename Tag, typename New>
constexpr auto substitute(const Expression<New>& val,
const Litteral<Tag>& /*t*/) {
return val.downcast();
}
/// Substitute litteral in binary operation
template <typename Tag, typename New, typename Der1, typename Der2,
typename Op>
constexpr auto substitute(const Expression<New>& val,
const BinaryOperation<Der1, Der2, Op>& op) {
return op.op(substitute<Tag>(val, op.operands.first),
substitute<Tag>(val, op.operands.second));
}
/// Substitute litteral in polynomial (aka do nothing)
template <typename Tag, typename New, typename CT, UInt order>
constexpr auto substitute(const Expression<New>& /*val*/,
const Polynomial<CT, order>& p) {
return p;
}
/// Substitute litteral in polynomial (aka do nothing)
template <typename Tag, typename New, typename T, typename Op>
constexpr auto substitute(const Expression<New>& val,
const UnaryOperation<T, Op>& p) {
return p.op(substitute<Tag>(val, p.expression));
}
/// Substitute generic expression by downcast
// template <typename Tag, typename New, typename Derived>
// constexpr auto substitute(const Expression<New>& val,
// const Expression<Derived>& e) {
// return substitute<Tag>(val, e.downcast());
// }
} // namespace expolit
#endif

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