MercuryMath.h

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#ifndef _MERCURYMATH_H
#define _MERCURYMATH_H

#include <math.h>

#define DEGRAD  0.01745329251994329576f     //degree to radian
#define RADDEG  57.2957795130823208767f     //radian to degree
#define Q_PI    3.14159265358979323846f

#if defined(WIN32)
//In win32, sin works faster than sinf and similar functions
#define SIN( x )        float( sin ( x ) )
#define COS( x )        float( cos ( x ) )
#define ATAN2( x, y )   float( atan2( x, y ) )
#define ASIN( x )       float( asin ( x ) )
#define ACOS( x )       float( acos ( x ) )
#define SQRT( x )       float( sqrt ( x ) )
#define TAN( x )        float( tan ( x ) )
#define ABS( x )        float( ((x<0)?(-x):(x)) )
#else
//On other OSes in general, sinf works faster than floating a sin
#define SIN( x )        sinf( x )
#define COS( x )        cosf( x )
#define ATAN2( x, y )   atan2f( x, y )
#define ASIN( x )       asinf ( x )
#define ACOS( x )       acosf ( x )
#define SQRT( x )       sqrtf( x )
#define TAN( x )        tanf( x )
#define ABS( x )        ((x<0)?(-x):(x))
#endif

#define SQ(x) ((x)*(x));

#define DotProduct(x,y) ((x)[0]*(y)[0]+(x)[1]*(y)[1]+(x)[2]*(y)[2])

#if !defined( _MSC_VER ) || defined( SLOW_CODE )

void Mul4f(const float* first, const float* second, float* out);
void Div4f(const float* first, const float* second, float* out);
void Add4f(const float* first, const float* second, float* out);
void Sub4f(const float* first, const float* second, float* out);
void Copy4f( void * dest, const void * source );
void Copy8f( void * dest, const void * source );
void Copy16f( void * dest, const void * source );
void R_ConcatTransforms4 ( const float* in1, const float* in2, float* out );
#else
//http://www.digitalmars.com/ctg/ctgAsm.html
extern "C" void Mul4f(const float* first, const float* second, float* out);
extern "C" void Div4f(const float* first, const float* second, float* out);
extern "C" void Add4f(const float* first, const float* second, float* out);
extern "C" void Sub4f(const float* first, const float* second, float* out);
extern "C" void __fastcall Copy4f( void * dest, const void * source );
extern "C" void __fastcall Copy8f( void * dest, const void * source );
extern "C" void __fastcall Copy16f( void * dest, const void * source );
extern "C" void R_ConcatTransforms4 ( const float* in1, const float* in2, float* out );
#endif

void VectorMultiply4f(const float *m, float *p, float *out );

#endif

/*
 * (c) 2006 Joshua Allen
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, and/or sell copies of the Software, and to permit persons to
 * whom the Software is furnished to do so, provided that the above
 * copyright notice(s) and this permission notice appear in all copies of
 * the Software and that both the above copyright notice(s) and this
 * permission notice appear in supporting documentation.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
 * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
 * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
 * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

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