UnionCast.h
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上传日期:2022-04-05
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- /*
- Linear Algebra / Math library
- Copyright (C) 2003-2009, Marek Olsak (maraeo@gmail.com), All Rights Reserved.
- Copyright (C) 2003-2005, Tomas Pastorek (tomas@tomaspastorek.cz), All Rights Reserved.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- as published by the Free Software Foundation; either version 2
- of the License, or (at your option) any later version.
- This program 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 General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- #pragma once
- namespace Rune
- {
- // Sablona pro pretypovani pres union, vhodne pro bezpecnou reinterpretaci vsech datovych typu
- // krome pointeru a referenci (pro tyto se pouziva reinterpret_cast).
- template<typename T1, typename T2>
- inline T1 union_cast(const T2 &a)
- {
- union
- {
- T2 a;
- T1 b;
- } myUnion;
- myUnion.a = a;
- return myUnion.b;
- }
- }