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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
*/
#ifndef DOUBLE_SERIALIZATION_H
#define DOUBLE_SERIALIZATION_H
#include "common/types.h"
namespace Util {
struct SerializedDouble {
uint32 significandOne;
uint32 signAndSignificandTwo;
int16 exponent;
};
struct CompactSerializedDouble {
uint32 signAndSignificandOne;
uint32 exponentAndSignificandTwo;
};
/**
* Encodes a double as two uint32 and a one int16
*
* Supports denormalized numbers. Does NOT support NaN, or Inf
*
* @param value The value to encode
* @return The encoded value
*/
SerializedDouble encodeDouble(double value);
/**
* Decodes a previously encoded double
*
* @param value The value to decode
* @return The decoded value
*/
double decodeDouble(SerializedDouble value);
#if 0
/**
* Encodes a double as a uint64
*
* Does NOT support denormalized numbers. Does NOT support NaN, or Inf
*
* @param value The value to encode
* @return The encoded value
*/
uint64 encodeDouble_64(double value);
/**
* Decodes a previously encoded double
*
* @param value The value to decode
* @return The decoded value
*/
double decodeDouble_64(uint64 value);
/**
* Encodes a double as two uint32
*
* Does NOT support denormalized numbers. Does NOT support NaN, or Inf
*
* @param value The value to encode
* @return The encoded value
*/
CompactSerializedDouble encodeDouble_Compact(double value);
/**
* Decodes a previously encoded double
*
* @param value The value to decode
* @return The decoded value
*/
double decodeDouble_Compact(CompactSerializedDouble value);
#endif
} // End of namespace Sword25
#endif
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