CWE-ou-minkata/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/CoreLib/hsScalar.h

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.

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 3 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, see <http://www.gnu.org/licenses/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
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JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
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licensors of this Program grant you additional
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 or by snail mail at:
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*==LICENSE==*/
#ifndef hsScalarMacrosDefined
#define hsScalarMacrosDefined

#include "hsFixedTypes.h"

#ifndef HS_SCALAR_IS_FLOAT
	#define HS_SCALAR_IS_FIXED		0
	#define HS_SCALAR_IS_FLOAT		1
	#define HS_NEVER_USE_FLOAT		0
#endif

#if HS_SCALAR_IS_FLOAT && HS_NEVER_USE_FLOAT
	#error "can't define HS_SCALAR_IS_FLOAT and HS_NEVER_USE_FLOAT"
#endif

#if HS_SCALAR_IS_FLOAT
	#include <math.h>
#endif

#define hsScalarDegToRad(deg)		hsScalarMul(deg, hsScalarPI / 180)
#define hsScalarRadToDeg(rad)		hsScalarMul(rad, 180 / hsScalarPI)

#if HS_SCALAR_IS_FIXED
	typedef hsFixed		hsScalar;

	#define hsScalar1			hsFixed1
	#define hsScalarHalf			(hsFixed1 >> 1)
	#define hsScalarPI			(hsFixedPI)
	#define hsScalarMax			(0x7fffffff)

	#if HS_CAN_USE_FLOAT
		#define hsFloatToScalar(x)	hsFixed((x) * float(hsFixed1))
		#define hsScalarToFloat(x)	((x) / float(hsFixed1))
	#endif

	#define hsIntToScalar(x)		hsIntToFixed(x)
	#define hsScalarToInt(x)		hsFixedToInt(x)
	#define hsScalarRound(x)		hsFixedRound(x)

	#define hsFixedToScalar(x)	(x)
	#define hsScalarToFixed(x)	(x)

	#define hsFractToScalar(x)	hsFractToFixed(x)
	#define hsScalarToFract(x)	hsFixedToFract(x)

	#define hsScalarMul(a, b)		hsFixMul(a, b)
	#define hsScalarMul2(a)		((a) << 1)
	#define hsScalarDiv(a, b)		hsFixDiv(a, b)
	#define hsScalarDiv2(a)		((a) >> 1)
	#define hsScalarInvert(a)		hsFixDiv(hsFixed1, a)
	#define hsScalarMod(a,b)		((a) % (b))
	#define hsScalarMulDiv(n1, n2, d)	hsMulDiv32(n1, n2, d)
	#define hsScalarMulAdd(a, b, c)	(hsFixMul(a, b) + (c))

	#define hsSquareRoot(scalar) hsFixSqrt(scalar)
	#define hsSine(angle)		hsFixedSin(angle)
	#define hsCosine(angle)		hsFixedCos(angle)
	#define hsTan(angle)		(hsSine(angle)/hsCosine(angle))
	#define hsASine(value)		hsFixedASin(value)
	#define hsACosine(value)		hsFixedACos(value)

#ifdef __cplusplus
	inline hsScalar hsScalarAverage(hsScalar a, hsScalar b) { return a + b >> 1; }
	inline hsScalar hsScalarAverage(hsScalar a, hsScalar b, hsScalar t)
				{
					return a + hsFixMul(t, b - a);
				}

	#if HS_CAN_USE_FLOAT
		inline hsScalar hsPow(hsScalar base, hsScalar exponent)
					{
						return hsFloatToScalar(powf(hsScalarToFloat(base), hsScalarToFloat(exponent)));
					}
		inline hsScalar hsATan2(hsScalar y, hsScalar x)
					{
						return hsFloatToScalar(atan2f(hsScalarToFloat(y), hsScalarToFloat(x)));
					}
	#endif
	inline hsScalar hsCeil(hsScalar x) { return (x + 0xFFFF) & 0xFFFF0000; }
	inline hsScalar hsFloor(hsScalar x) { return x & 0xFFFF0000; }
#endif 
#endif
#if HS_SCALAR_IS_FLOAT
	typedef float		hsScalar;

	#define hsScalar1			float(1)
	#define hsScalarHalf			float(0.5)
	#define hsScalarPI			float(HS_PI)
	#define hsScalarMax			float(3.402823466e+38F)

	#define hsFloatToScalar(x)	float(x)
	#define hsScalarToFloat(x)	float(x)

	#define hsIntToScalar(x)		float(x)
	#define hsScalarToInt(x)		Int32(x)


	#define hsFixedToScalar(x)	((hsScalar)(x) / float(hsFixed1))
	#define hsScalarToFixed(x)	hsFixed((x) * float(hsFixed1))

	#define hsFractToScalar(x)	((x) / float(hsFract1))
	#define hsScalarToFract(x)	hsFract((x) * float(hsFract1))
#ifdef __cplusplus

	#define hsScalarMod(a,b)			fmodf(a, b)
	#define hsScalarMulAdd(a, b, c)	((a) * (b) + (c))
	#define hsScalarMul(a,b)			((a) * (b))
	#define hsScalarMul2(a)			((a) * 2)
	#define hsScalarDiv(a,b)			((a) / (b))
	#define hsScalarDiv2(a)			((a) * float(0.5))
	#define hsScalarInvert(a)			(float(1) / (a))
	#define hsScalarMulDiv(n1,n2,d)	((n1) * (n2) / (d))

#ifndef HS_DEBUGGING 	/* mf horse testing defines vs inlines for VC++5.0 performance */

	#define hsScalarRound(x)			Int32((x) + ((x) < 0 ? -hsScalarHalf : hsScalarHalf))

#else /* HS_DEBUGGING - use inlines for type-checking etc...and all */
	inline Int32 hsScalarRound(float x)
	{
		float half = hsScalarHalf;
		if (x < 0)
			half = -half;
		return Int32(x + half);
	}
#endif /* HS_DEBUGGING - use inlines for type-checking etc...and all */

	inline float hsScalarAverage(float a, float b) { return (a + b) * float(0.5); }
	inline float hsScalarAverage(float a, float b, float t) { return a + t * (b - a); }

#if (HS_BUILD_FOR_BE || (HS_BUILD_FOR_UNIX && !HS_BUILD_FOR_GCC322))
	#define acosf(x)		(float)acos(x)
	#define asinf(x)		(float)asin(x)
	#define atanf(x)		(float)atan(x)
	#define atan2f(x, y)		(float)atan2(x, y)
	#define ceilf(x)			(float)ceil(x)
	#define cosf(x)			(float)cos(x)
	#define coshf(x)		(float)cosh(x)
	#define expf(x)			(float)exp(x)
	#define fabsf(x)		(float)fabs(x)
	#define floorf(x)		(float)floor(x)
	#define fmodf(x, y)		(float)fmod(x, y)
	#define logf(x)			(float)log(x)
	#define log10f(x)		(float)log10(x)
	#define powf(x, y)		(float)pow(x, y)
	#define sinf(x)			(float)sin(x)
	#define sinhf(x)		(float)sinh(x)
	#define sqrtf(x)		(float)sqrt(x)
	#define tanf(x)			(float)tan(x)
	#define tanhf(x)		(float)tanh(x)

	inline float modff(float x, float* y)
	{
		double _Di, _Df = modf(x, &_Di);
		*y = (float)_Di;
		return ((float)_Df);
	}
#endif

	inline hsScalar hsSquareRoot(hsScalar scalar) { return sqrtf(scalar); }
	inline hsScalar hsSine(hsScalar angle) { return sinf(angle); }
	inline hsScalar hsCosine(hsScalar angle) { return cosf(angle); }
	inline hsScalar hsTan(hsScalar rads) { return tanf(rads); }
	inline hsScalar hsASine(hsScalar value) { return asinf(value); }
	inline hsScalar hsACosine(hsScalar value) { return acosf(value); }
	inline hsScalar hsPow(hsScalar base, hsScalar exponent) { return powf(base, exponent); }
	inline hsScalar hsATan2(hsScalar y, hsScalar x) { return atan2f(y, x); }
	inline hsScalar hsCeil(hsScalar x) { return ceilf(x); }
	inline hsScalar hsFloor(hsScalar x) { return floorf(x); }
#endif	/* HS_SCALAR_IS_FLOAT */
#endif	/* __CPLUSPLUS */
	
//
// Macros for enabling double precision math ops
// require #include <float.h>
//
#if HS_BUILD_FOR_WIN32
#define hsDoublePrecBegin \
	unsigned int fpc=_controlfp( 0, 0);	\
	_controlfp( _PC_64, MCW_PC ); 
#define hsDoublePrecEnd \
	_controlfp( fpc, 0xfffff ); 
#else
#define hsDoublePrecBegin
#define hsDoublePrecEnd
#endif

#endif