Serious-Engine/Sources/Engine/Math/Float.h

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2016-03-12 01:20:51 +01:00
/* Copyright (c) 2002-2012 Croteam Ltd.
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License as published by
the Free Software Foundation
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. */
2016-03-11 14:57:17 +01:00
#ifndef SE_INCL_FLOAT_H
#define SE_INCL_FLOAT_H
#ifdef PRAGMA_ONCE
#pragma once
#endif
/*
* FPU control functions and classes.
*/
// FPU precision setting values
enum FPUPrecisionType {
FPT_24BIT,
FPT_53BIT,
FPT_64BIT,
};
/* Get current precision setting of FPU. */
ENGINE_API enum FPUPrecisionType GetFPUPrecision(void);
/* Set current precision setting of FPU. */
ENGINE_API void SetFPUPrecision(enum FPUPrecisionType fptNew);
/*
* Class that provides automatic saving/setting/restoring of FPU precision setting.
*/
class ENGINE_API CSetFPUPrecision {
private:
enum FPUPrecisionType sfp_fptOldPrecision;
enum FPUPrecisionType sfp_fptNewPrecision;
public:
/* Constructor with automatic setting of FPU precision. */
CSetFPUPrecision(enum FPUPrecisionType fptNew);
/* Destructor with automatic restoring of FPU precision. */
~CSetFPUPrecision(void);
};
ENGINE_API BOOL IsValidFloat(float f);
ENGINE_API BOOL IsValidDouble(double f);
#endif /* include-once check. */