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Diffstat (limited to 'extern/bullet2/LinearMath/btScalar.h')
| -rw-r--r-- | extern/bullet2/LinearMath/btScalar.h | 517 |
1 files changed, 0 insertions, 517 deletions
diff --git a/extern/bullet2/LinearMath/btScalar.h b/extern/bullet2/LinearMath/btScalar.h deleted file mode 100644 index 9f6ceb3e0d3..00000000000 --- a/extern/bullet2/LinearMath/btScalar.h +++ /dev/null @@ -1,517 +0,0 @@ -/* -Copyright (c) 2003-2009 Erwin Coumans http://bullet.googlecode.com - -This software is provided 'as-is', without any express or implied warranty. -In no event will the authors be held liable for any damages arising from the use of this software. -Permission is granted to anyone to use this software for any purpose, -including commercial applications, and to alter it and redistribute it freely, -subject to the following restrictions: - -1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. -2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. -3. This notice may not be removed or altered from any source distribution. -*/ - - - -#ifndef SIMD___SCALAR_H -#define SIMD___SCALAR_H - -#ifdef BT_MANAGED_CODE -//Aligned data types not supported in managed code -#pragma unmanaged -#endif - - -#include <math.h> -#include <stdlib.h>//size_t for MSVC 6.0 -#include <cstdlib> -#include <cfloat> -#include <float.h> - -/* SVN $Revision$ on $Date$ from http://bullet.googlecode.com*/ -#define BT_BULLET_VERSION 276 - -inline int btGetVersion() -{ - return BT_BULLET_VERSION; -} - -#if defined(DEBUG) || defined (_DEBUG) -#define BT_DEBUG -#endif - - -#ifdef _WIN32 - - #if defined(__MINGW32__) || defined(__CYGWIN__) || (defined (_MSC_VER) && _MSC_VER < 1300) - - #define SIMD_FORCE_INLINE inline - #define ATTRIBUTE_ALIGNED16(a) a - #define ATTRIBUTE_ALIGNED64(a) a - #define ATTRIBUTE_ALIGNED128(a) a - #else - //#define BT_HAS_ALIGNED_ALLOCATOR - #pragma warning(disable : 4324) // disable padding warning -// #pragma warning(disable:4530) // Disable the exception disable but used in MSCV Stl warning. -// #pragma warning(disable:4996) //Turn off warnings about deprecated C routines -// #pragma warning(disable:4786) // Disable the "debug name too long" warning - - #define SIMD_FORCE_INLINE __forceinline - #define ATTRIBUTE_ALIGNED16(a) __declspec(align(16)) a - #define ATTRIBUTE_ALIGNED64(a) __declspec(align(64)) a - #define ATTRIBUTE_ALIGNED128(a) __declspec (align(128)) a - #ifdef _XBOX - #define BT_USE_VMX128 - - #include <ppcintrinsics.h> - #define BT_HAVE_NATIVE_FSEL - #define btFsel(a,b,c) __fsel((a),(b),(c)) - #else - -#if (defined (_WIN32) && (_MSC_VER) && _MSC_VER >= 1400) && (!defined (BT_USE_DOUBLE_PRECISION)) - #define BT_USE_SSE - #include <emmintrin.h> -#endif - - #endif//_XBOX - - #endif //__MINGW32__ - - #include <assert.h> -#ifdef BT_DEBUG - #define btAssert assert -#else - #define btAssert(x) -#endif - //btFullAssert is optional, slows down a lot - #define btFullAssert(x) - - #define btLikely(_c) _c - #define btUnlikely(_c) _c - -#else - -#if defined (__CELLOS_LV2__) - #define SIMD_FORCE_INLINE inline - #define ATTRIBUTE_ALIGNED16(a) a __attribute__ ((aligned (16))) - #define ATTRIBUTE_ALIGNED64(a) a __attribute__ ((aligned (64))) - #define ATTRIBUTE_ALIGNED128(a) a __attribute__ ((aligned (128))) - #ifndef assert - #include <assert.h> - #endif -#ifdef BT_DEBUG - #define btAssert assert -#else - #define btAssert(x) -#endif - //btFullAssert is optional, slows down a lot - #define btFullAssert(x) - - #define btLikely(_c) _c - #define btUnlikely(_c) _c - -#else - -#ifdef USE_LIBSPE2 - - #define SIMD_FORCE_INLINE __inline - #define ATTRIBUTE_ALIGNED16(a) a __attribute__ ((aligned (16))) - #define ATTRIBUTE_ALIGNED64(a) a __attribute__ ((aligned (64))) - #define ATTRIBUTE_ALIGNED128(a) a __attribute__ ((aligned (128))) - #ifndef assert - #include <assert.h> - #endif -#ifdef BT_DEBUG - #define btAssert assert -#else - #define btAssert(x) -#endif - //btFullAssert is optional, slows down a lot - #define btFullAssert(x) - - - #define btLikely(_c) __builtin_expect((_c), 1) - #define btUnlikely(_c) __builtin_expect((_c), 0) - - -#else - //non-windows systems - -#if (defined (__APPLE__) && defined (__i386__) && (!defined (BT_USE_DOUBLE_PRECISION))) - #define BT_USE_SSE - #include <emmintrin.h> - - #define SIMD_FORCE_INLINE inline -///@todo: check out alignment methods for other platforms/compilers - #define ATTRIBUTE_ALIGNED16(a) a __attribute__ ((aligned (16))) - #define ATTRIBUTE_ALIGNED64(a) a __attribute__ ((aligned (64))) - #define ATTRIBUTE_ALIGNED128(a) a __attribute__ ((aligned (128))) - #ifndef assert - #include <assert.h> - #endif - - #if defined(DEBUG) || defined (_DEBUG) - #define btAssert assert - #else - #define btAssert(x) - #endif - - //btFullAssert is optional, slows down a lot - #define btFullAssert(x) - #define btLikely(_c) _c - #define btUnlikely(_c) _c - -#else - - #define SIMD_FORCE_INLINE inline - ///@todo: check out alignment methods for other platforms/compilers - ///#define ATTRIBUTE_ALIGNED16(a) a __attribute__ ((aligned (16))) - ///#define ATTRIBUTE_ALIGNED64(a) a __attribute__ ((aligned (64))) - ///#define ATTRIBUTE_ALIGNED128(a) a __attribute__ ((aligned (128))) - #define ATTRIBUTE_ALIGNED16(a) a - #define ATTRIBUTE_ALIGNED64(a) a - #define ATTRIBUTE_ALIGNED128(a) a - #ifndef assert - #include <assert.h> - #endif - -#if defined(DEBUG) || defined (_DEBUG) - #define btAssert assert -#else - #define btAssert(x) -#endif - - //btFullAssert is optional, slows down a lot - #define btFullAssert(x) - #define btLikely(_c) _c - #define btUnlikely(_c) _c -#endif //__APPLE__ - -#endif // LIBSPE2 - -#endif //__CELLOS_LV2__ -#endif - - -///The btScalar type abstracts floating point numbers, to easily switch between double and single floating point precision. -#if defined(BT_USE_DOUBLE_PRECISION) -typedef double btScalar; -//this number could be bigger in double precision -#define BT_LARGE_FLOAT 1e30 -#else -typedef float btScalar; -//keep BT_LARGE_FLOAT*BT_LARGE_FLOAT < FLT_MAX -#define BT_LARGE_FLOAT 1e18f -#endif - - - -#define BT_DECLARE_ALIGNED_ALLOCATOR() \ - SIMD_FORCE_INLINE void* operator new(size_t sizeInBytes) { return btAlignedAlloc(sizeInBytes,16); } \ - SIMD_FORCE_INLINE void operator delete(void* ptr) { btAlignedFree(ptr); } \ - SIMD_FORCE_INLINE void* operator new(size_t, void* ptr) { return ptr; } \ - SIMD_FORCE_INLINE void operator delete(void*, void*) { } \ - SIMD_FORCE_INLINE void* operator new[](size_t sizeInBytes) { return btAlignedAlloc(sizeInBytes,16); } \ - SIMD_FORCE_INLINE void operator delete[](void* ptr) { btAlignedFree(ptr); } \ - SIMD_FORCE_INLINE void* operator new[](size_t, void* ptr) { return ptr; } \ - SIMD_FORCE_INLINE void operator delete[](void*, void*) { } \ - - - -#if defined(BT_USE_DOUBLE_PRECISION) || defined(BT_FORCE_DOUBLE_FUNCTIONS) - -SIMD_FORCE_INLINE btScalar btSqrt(btScalar x) { return sqrt(x); } -SIMD_FORCE_INLINE btScalar btFabs(btScalar x) { return fabs(x); } -SIMD_FORCE_INLINE btScalar btCos(btScalar x) { return cos(x); } -SIMD_FORCE_INLINE btScalar btSin(btScalar x) { return sin(x); } -SIMD_FORCE_INLINE btScalar btTan(btScalar x) { return tan(x); } -SIMD_FORCE_INLINE btScalar btAcos(btScalar x) { if (x<btScalar(-1)) x=btScalar(-1); if (x>btScalar(1)) x=btScalar(1); return acos(x); } -SIMD_FORCE_INLINE btScalar btAsin(btScalar x) { if (x<btScalar(-1)) x=btScalar(-1); if (x>btScalar(1)) x=btScalar(1); return asin(x); } -SIMD_FORCE_INLINE btScalar btAtan(btScalar x) { return atan(x); } -SIMD_FORCE_INLINE btScalar btAtan2(btScalar x, btScalar y) { return atan2(x, y); } -SIMD_FORCE_INLINE btScalar btExp(btScalar x) { return exp(x); } -SIMD_FORCE_INLINE btScalar btLog(btScalar x) { return log(x); } -SIMD_FORCE_INLINE btScalar btPow(btScalar x,btScalar y) { return pow(x,y); } -SIMD_FORCE_INLINE btScalar btFmod(btScalar x,btScalar y) { return fmod(x,y); } - -#else - -SIMD_FORCE_INLINE btScalar btSqrt(btScalar y) -{ -#ifdef USE_APPROXIMATION - double x, z, tempf; - unsigned long *tfptr = ((unsigned long *)&tempf) + 1; - - tempf = y; - *tfptr = (0xbfcdd90a - *tfptr)>>1; /* estimate of 1/sqrt(y) */ - x = tempf; - z = y*btScalar(0.5); /* hoist out the “/2” */ - x = (btScalar(1.5)*x)-(x*x)*(x*z); /* iteration formula */ - x = (btScalar(1.5)*x)-(x*x)*(x*z); - x = (btScalar(1.5)*x)-(x*x)*(x*z); - x = (btScalar(1.5)*x)-(x*x)*(x*z); - x = (btScalar(1.5)*x)-(x*x)*(x*z); - return x*y; -#else - return sqrtf(y); -#endif -} -SIMD_FORCE_INLINE btScalar btFabs(btScalar x) { return fabsf(x); } -SIMD_FORCE_INLINE btScalar btCos(btScalar x) { return cosf(x); } -SIMD_FORCE_INLINE btScalar btSin(btScalar x) { return sinf(x); } -SIMD_FORCE_INLINE btScalar btTan(btScalar x) { return tanf(x); } -SIMD_FORCE_INLINE btScalar btAcos(btScalar x) { - if (x<btScalar(-1)) - x=btScalar(-1); - if (x>btScalar(1)) - x=btScalar(1); - return acosf(x); -} -SIMD_FORCE_INLINE btScalar btAsin(btScalar x) { - if (x<btScalar(-1)) - x=btScalar(-1); - if (x>btScalar(1)) - x=btScalar(1); - return asinf(x); -} -SIMD_FORCE_INLINE btScalar btAtan(btScalar x) { return atanf(x); } -SIMD_FORCE_INLINE btScalar btAtan2(btScalar x, btScalar y) { return atan2f(x, y); } -SIMD_FORCE_INLINE btScalar btExp(btScalar x) { return expf(x); } -SIMD_FORCE_INLINE btScalar btLog(btScalar x) { return logf(x); } -SIMD_FORCE_INLINE btScalar btPow(btScalar x,btScalar y) { return powf(x,y); } -SIMD_FORCE_INLINE btScalar btFmod(btScalar x,btScalar y) { return fmodf(x,y); } - -#endif - -#define SIMD_2_PI btScalar(6.283185307179586232) -#define SIMD_PI (SIMD_2_PI * btScalar(0.5)) -#define SIMD_HALF_PI (SIMD_2_PI * btScalar(0.25)) -#define SIMD_RADS_PER_DEG (SIMD_2_PI / btScalar(360.0)) -#define SIMD_DEGS_PER_RAD (btScalar(360.0) / SIMD_2_PI) -#define SIMDSQRT12 btScalar(0.7071067811865475244008443621048490) - -#define btRecipSqrt(x) ((btScalar)(btScalar(1.0)/btSqrt(btScalar(x)))) /* reciprocal square root */ - - -#ifdef BT_USE_DOUBLE_PRECISION -#define SIMD_EPSILON DBL_EPSILON -#define SIMD_INFINITY DBL_MAX -#else -#define SIMD_EPSILON FLT_EPSILON -#define SIMD_INFINITY FLT_MAX -#endif - -SIMD_FORCE_INLINE btScalar btAtan2Fast(btScalar y, btScalar x) -{ - btScalar coeff_1 = SIMD_PI / 4.0f; - btScalar coeff_2 = 3.0f * coeff_1; - btScalar abs_y = btFabs(y); - btScalar angle; - if (x >= 0.0f) { - btScalar r = (x - abs_y) / (x + abs_y); - angle = coeff_1 - coeff_1 * r; - } else { - btScalar r = (x + abs_y) / (abs_y - x); - angle = coeff_2 - coeff_1 * r; - } - return (y < 0.0f) ? -angle : angle; -} - -SIMD_FORCE_INLINE bool btFuzzyZero(btScalar x) { return btFabs(x) < SIMD_EPSILON; } - -SIMD_FORCE_INLINE bool btEqual(btScalar a, btScalar eps) { - return (((a) <= eps) && !((a) < -eps)); -} -SIMD_FORCE_INLINE bool btGreaterEqual (btScalar a, btScalar eps) { - return (!((a) <= eps)); -} - - -SIMD_FORCE_INLINE int btIsNegative(btScalar x) { - return x < btScalar(0.0) ? 1 : 0; -} - -SIMD_FORCE_INLINE btScalar btRadians(btScalar x) { return x * SIMD_RADS_PER_DEG; } -SIMD_FORCE_INLINE btScalar btDegrees(btScalar x) { return x * SIMD_DEGS_PER_RAD; } - -#define BT_DECLARE_HANDLE(name) typedef struct name##__ { int unused; } *name - -#ifndef btFsel -SIMD_FORCE_INLINE btScalar btFsel(btScalar a, btScalar b, btScalar c) -{ - return a >= 0 ? b : c; -} -#endif -#define btFsels(a,b,c) (btScalar)btFsel(a,b,c) - - -SIMD_FORCE_INLINE bool btMachineIsLittleEndian() -{ - long int i = 1; - const char *p = (const char *) &i; - if (p[0] == 1) // Lowest address contains the least significant byte - return true; - else - return false; -} - - - -///btSelect avoids branches, which makes performance much better for consoles like Playstation 3 and XBox 360 -///Thanks Phil Knight. See also http://www.cellperformance.com/articles/2006/04/more_techniques_for_eliminatin_1.html -SIMD_FORCE_INLINE unsigned btSelect(unsigned condition, unsigned valueIfConditionNonZero, unsigned valueIfConditionZero) -{ - // Set testNz to 0xFFFFFFFF if condition is nonzero, 0x00000000 if condition is zero - // Rely on positive value or'ed with its negative having sign bit on - // and zero value or'ed with its negative (which is still zero) having sign bit off - // Use arithmetic shift right, shifting the sign bit through all 32 bits - unsigned testNz = (unsigned)(((int)condition | -(int)condition) >> 31); - unsigned testEqz = ~testNz; - return ((valueIfConditionNonZero & testNz) | (valueIfConditionZero & testEqz)); -} -SIMD_FORCE_INLINE int btSelect(unsigned condition, int valueIfConditionNonZero, int valueIfConditionZero) -{ - unsigned testNz = (unsigned)(((int)condition | -(int)condition) >> 31); - unsigned testEqz = ~testNz; - return static_cast<int>((valueIfConditionNonZero & testNz) | (valueIfConditionZero & testEqz)); -} -SIMD_FORCE_INLINE float btSelect(unsigned condition, float valueIfConditionNonZero, float valueIfConditionZero) -{ -#ifdef BT_HAVE_NATIVE_FSEL - return (float)btFsel((btScalar)condition - btScalar(1.0f), valueIfConditionNonZero, valueIfConditionZero); -#else - return (condition != 0) ? valueIfConditionNonZero : valueIfConditionZero; -#endif -} - -template<typename T> SIMD_FORCE_INLINE void btSwap(T& a, T& b) -{ - T tmp = a; - a = b; - b = tmp; -} - - -//PCK: endian swapping functions -SIMD_FORCE_INLINE unsigned btSwapEndian(unsigned val) -{ - return (((val & 0xff000000) >> 24) | ((val & 0x00ff0000) >> 8) | ((val & 0x0000ff00) << 8) | ((val & 0x000000ff) << 24)); -} - -SIMD_FORCE_INLINE unsigned short btSwapEndian(unsigned short val) -{ - return static_cast<unsigned short>(((val & 0xff00) >> 8) | ((val & 0x00ff) << 8)); -} - -SIMD_FORCE_INLINE unsigned btSwapEndian(int val) -{ - return btSwapEndian((unsigned)val); -} - -SIMD_FORCE_INLINE unsigned short btSwapEndian(short val) -{ - return btSwapEndian((unsigned short) val); -} - -///btSwapFloat uses using char pointers to swap the endianness -////btSwapFloat/btSwapDouble will NOT return a float, because the machine might 'correct' invalid floating point values -///Not all values of sign/exponent/mantissa are valid floating point numbers according to IEEE 754. -///When a floating point unit is faced with an invalid value, it may actually change the value, or worse, throw an exception. -///In most systems, running user mode code, you wouldn't get an exception, but instead the hardware/os/runtime will 'fix' the number for you. -///so instead of returning a float/double, we return integer/long long integer -SIMD_FORCE_INLINE unsigned int btSwapEndianFloat(float d) -{ - unsigned int a = 0; - unsigned char *dst = (unsigned char *)&a; - unsigned char *src = (unsigned char *)&d; - - dst[0] = src[3]; - dst[1] = src[2]; - dst[2] = src[1]; - dst[3] = src[0]; - return a; -} - -// unswap using char pointers -SIMD_FORCE_INLINE float btUnswapEndianFloat(unsigned int a) -{ - float d = 0.0f; - unsigned char *src = (unsigned char *)&a; - unsigned char *dst = (unsigned char *)&d; - - dst[0] = src[3]; - dst[1] = src[2]; - dst[2] = src[1]; - dst[3] = src[0]; - - return d; -} - - -// swap using char pointers -SIMD_FORCE_INLINE void btSwapEndianDouble(double d, unsigned char* dst) -{ - unsigned char *src = (unsigned char *)&d; - - dst[0] = src[7]; - dst[1] = src[6]; - dst[2] = src[5]; - dst[3] = src[4]; - dst[4] = src[3]; - dst[5] = src[2]; - dst[6] = src[1]; - dst[7] = src[0]; - -} - -// unswap using char pointers -SIMD_FORCE_INLINE double btUnswapEndianDouble(const unsigned char *src) -{ - double d = 0.0; - unsigned char *dst = (unsigned char *)&d; - - dst[0] = src[7]; - dst[1] = src[6]; - dst[2] = src[5]; - dst[3] = src[4]; - dst[4] = src[3]; - dst[5] = src[2]; - dst[6] = src[1]; - dst[7] = src[0]; - - return d; -} - -// returns normalized value in range [-SIMD_PI, SIMD_PI] -SIMD_FORCE_INLINE btScalar btNormalizeAngle(btScalar angleInRadians) -{ - angleInRadians = btFmod(angleInRadians, SIMD_2_PI); - if(angleInRadians < -SIMD_PI) - { - return angleInRadians + SIMD_2_PI; - } - else if(angleInRadians > SIMD_PI) - { - return angleInRadians - SIMD_2_PI; - } - else - { - return angleInRadians; - } -} - -///rudimentary class to provide type info -struct btTypedObject -{ - btTypedObject(int objectType) - :m_objectType(objectType) - { - } - int m_objectType; - inline int getObjectType() const - { - return m_objectType; - } -}; -#endif //SIMD___SCALAR_H |