Serious-Engine/Sources/Engine/Math/Float.h
2016-03-11 15:57:17 +02:00

46 lines
1.0 KiB
C++

/* Copyright (c) 2002-2012 Croteam Ltd. All rights reserved. */
#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. */