#include <math.h>
#include <stdlib.h>
#include <float.h>

Include dependency graph for btScalar.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	btInfMaskConverter

struct	btTypedObject
	rudimentary class to provide type info More...

Macros
#define	BT_BULLET_VERSION 324

#define	BT_NOT_EMPTY_FILE

#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

#define	btAssert(x)

#define	btFullAssert(x)

#define	btLikely(_c) _c

#define	btUnlikely(_c) _c

#define	BT_LARGE_FLOAT 1e18f

#define	BT_INFINITY (btInfinityMask.mask)

#define	BT_DECLARE_ALIGNED_ALLOCATOR()

#define	SIMD_PI btScalar(3.1415926535897932384626433832795029)

#define	SIMD_2_PI (btScalar(2.0) * SIMD_PI)

#define	SIMD_HALF_PI (SIMD_PI * btScalar(0.5))

#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 */

#define	btRecip(x) (btScalar(1.0) / btScalar(x))

#define	SIMD_EPSILON FLT_EPSILON

#define	SIMD_INFINITY FLT_MAX

#define	BT_ONE 1.0f

#define	BT_ZERO 0.0f

#define	BT_TWO 2.0f

#define	BT_HALF 0.5f

#define	BT_DECLARE_HANDLE(name)

#define	btFsels(a, b, c) (btScalar) btFsel(a, b, c)

Typedefs
typedef float	btScalar
	The btScalar type abstracts floating point numbers, to easily switch between double and single floating point precision. More...

Functions
int	btGetVersion ()

int	btIsDoublePrecision ()

int	btGetInfinityMask ()

btScalar	btSqrt (btScalar y)

btScalar	btFabs (btScalar x)

btScalar	btCos (btScalar x)

btScalar	btSin (btScalar x)

btScalar	btTan (btScalar x)

btScalar	btAcos (btScalar x)

btScalar	btAsin (btScalar x)

btScalar	btAtan (btScalar x)

btScalar	btAtan2 (btScalar x, btScalar y)

btScalar	btExp (btScalar x)

btScalar	btLog (btScalar x)

btScalar	btPow (btScalar x, btScalar y)

btScalar	btFmod (btScalar x, btScalar y)

btScalar	btAtan2Fast (btScalar y, btScalar x)

bool	btFuzzyZero (btScalar x)

bool	btEqual (btScalar a, btScalar eps)

bool	btGreaterEqual (btScalar a, btScalar eps)

int	btIsNegative (btScalar x)

btScalar	btRadians (btScalar x)

btScalar	btDegrees (btScalar x)

btScalar	btFsel (btScalar a, btScalar b, btScalar c)

bool	btMachineIsLittleEndian ()

unsigned	btSelect (unsigned condition, unsigned valueIfConditionNonZero, unsigned valueIfConditionZero)
	btSelect avoids branches, which makes performance much better for consoles like Playstation 3 and XBox 360 Thanks Phil Knight. More...

int	btSelect (unsigned condition, int valueIfConditionNonZero, int valueIfConditionZero)

float	btSelect (unsigned condition, float valueIfConditionNonZero, float valueIfConditionZero)

template<typename T >
void	btSwap (T &a, T &b)

unsigned	btSwapEndian (unsigned val)

unsigned short	btSwapEndian (unsigned short val)

unsigned	btSwapEndian (int val)

unsigned short	btSwapEndian (short val)

unsigned int	btSwapEndianFloat (float d)
	btSwapFloat uses using char pointers to swap the endianness More...

float	btUnswapEndianFloat (unsigned int a)

void	btSwapEndianDouble (double d, unsigned char *dst)

double	btUnswapEndianDouble (const unsigned char *src)

template<typename T >
void	btSetZero (T *a, int n)

btScalar	btLargeDot (const btScalar a, const btScalar b, int n)

btScalar	btNormalizeAngle (btScalar angleInRadians)

template<typename T >
T *	btAlignPointer (T *unalignedPtr, size_t alignment)
	align a pointer to the provided alignment, upwards More...

Variables
static btInfMaskConverter	btInfinityMask = 0x7F800000

Macro Definition Documentation

◆ ATTRIBUTE_ALIGNED128

#define ATTRIBUTE_ALIGNED128 ( a ) __declspec (align(128)) a

Definition at line 101 of file btScalar.h.

◆ ATTRIBUTE_ALIGNED16

#define ATTRIBUTE_ALIGNED16 ( a ) __declspec(align(16)) a

Definition at line 99 of file btScalar.h.

◆ ATTRIBUTE_ALIGNED64

#define ATTRIBUTE_ALIGNED64 ( a ) __declspec(align(64)) a

Definition at line 100 of file btScalar.h.

◆ BT_BULLET_VERSION

#define BT_BULLET_VERSION 324

Definition at line 28 of file btScalar.h.

◆ BT_DECLARE_ALIGNED_ALLOCATOR

#define BT_DECLARE_ALIGNED_ALLOCATOR ( )

Value:

        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 *) {}

Definition at line 425 of file btScalar.h.

◆ BT_DECLARE_HANDLE

#define BT_DECLARE_HANDLE ( name )

Value:

        typedef struct name##__     \
        {                           \
                int unused;             \
        } * name

Definition at line 591 of file btScalar.h.

◆ BT_HALF

#define BT_HALF 0.5f

Definition at line 548 of file btScalar.h.

◆ BT_INFINITY

#define BT_INFINITY (btInfinityMask.mask)

Definition at line 405 of file btScalar.h.

◆ BT_LARGE_FLOAT

#define BT_LARGE_FLOAT 1e18f

Definition at line 316 of file btScalar.h.

◆ BT_NOT_EMPTY_FILE

#define BT_NOT_EMPTY_FILE

Definition at line 66 of file btScalar.h.

◆ BT_ONE

#define BT_ONE 1.0f

Definition at line 545 of file btScalar.h.

◆ BT_TWO

#define BT_TWO 2.0f

Definition at line 547 of file btScalar.h.

◆ BT_ZERO

#define BT_ZERO 0.0f

Definition at line 546 of file btScalar.h.

◆ btAssert

#define btAssert ( x )

Definition at line 153 of file btScalar.h.

◆ btFsels

#define btFsels	(	a,
		b,
		c
	)	(btScalar) btFsel(a, b, c)

Definition at line 603 of file btScalar.h.

◆ btFullAssert

#define btFullAssert ( x )

Definition at line 156 of file btScalar.h.

◆ btLikely

#define btLikely ( _c ) _c

Definition at line 158 of file btScalar.h.

◆ btRecip

#define btRecip ( x ) (btScalar(1.0) / btScalar(x))

Definition at line 533 of file btScalar.h.

◆ btRecipSqrt

#define btRecipSqrt ( x ) ((btScalar)(btScalar(1.0) / btSqrt(btScalar(x)))) /* reciprocal square root */

Definition at line 532 of file btScalar.h.

◆ btUnlikely

#define btUnlikely ( _c ) _c

Definition at line 159 of file btScalar.h.

◆ SIMD_2_PI

#define SIMD_2_PI (btScalar(2.0) * SIMD_PI)

Definition at line 527 of file btScalar.h.

◆ SIMD_DEGS_PER_RAD

#define SIMD_DEGS_PER_RAD (btScalar(360.0) / SIMD_2_PI)

Definition at line 530 of file btScalar.h.

◆ SIMD_EPSILON

#define SIMD_EPSILON FLT_EPSILON

Definition at line 543 of file btScalar.h.

◆ SIMD_FORCE_INLINE

#define SIMD_FORCE_INLINE __forceinline

Definition at line 98 of file btScalar.h.

◆ SIMD_HALF_PI

#define SIMD_HALF_PI (SIMD_PI * btScalar(0.5))

Definition at line 528 of file btScalar.h.

◆ SIMD_INFINITY

#define SIMD_INFINITY FLT_MAX

Definition at line 544 of file btScalar.h.

◆ SIMD_PI

#define SIMD_PI btScalar(3.1415926535897932384626433832795029)

Definition at line 526 of file btScalar.h.

◆ SIMD_RADS_PER_DEG

#define SIMD_RADS_PER_DEG (SIMD_2_PI / btScalar(360.0))

Definition at line 529 of file btScalar.h.

◆ SIMDSQRT12

#define SIMDSQRT12 btScalar(0.7071067811865475244008443621048490)

Definition at line 531 of file btScalar.h.

Typedef Documentation

◆ btScalar

typedef float btScalar

The btScalar type abstracts floating point numbers, to easily switch between double and single floating point precision.

Definition at line 314 of file btScalar.h.

Function Documentation

◆ btAcos()

btScalar btAcos ( btScalar x )

inline

Definition at line 501 of file btScalar.h.

◆ btAlignPointer()

template<typename T >

T * btAlignPointer	(	T *	unalignedPtr,
		size_t	alignment
	)

align a pointer to the provided alignment, upwards

Definition at line 814 of file btScalar.h.

◆ btAsin()

btScalar btAsin ( btScalar x )

inline

Definition at line 509 of file btScalar.h.

◆ btAtan()

btScalar btAtan ( btScalar x )

inline

Definition at line 517 of file btScalar.h.

◆ btAtan2()

btScalar btAtan2	(	btScalar	x,
		btScalar	y
	)

inline

Definition at line 518 of file btScalar.h.

◆ btAtan2Fast()

btScalar btAtan2Fast	(	btScalar	y,
		btScalar	x
	)

inline

Definition at line 553 of file btScalar.h.

◆ btCos()

btScalar btCos ( btScalar x )

inline

Definition at line 498 of file btScalar.h.

◆ btDegrees()

btScalar btDegrees ( btScalar x )

inline

Definition at line 589 of file btScalar.h.

◆ btEqual()

bool btEqual	(	btScalar	a,
		btScalar	eps
	)

inline

Definition at line 574 of file btScalar.h.

◆ btExp()

btScalar btExp ( btScalar x )

inline

Definition at line 519 of file btScalar.h.

◆ btFabs()

btScalar btFabs ( btScalar x )

inline

Definition at line 497 of file btScalar.h.

◆ btFmod()

btScalar btFmod	(	btScalar	x,
		btScalar	y
	)

inline

Definition at line 522 of file btScalar.h.

◆ btFsel()

btScalar btFsel	(	btScalar	a,
		btScalar	b,
		btScalar	c
	)

inline

Definition at line 598 of file btScalar.h.

◆ btFuzzyZero()

bool btFuzzyZero ( btScalar x )

inline

Definition at line 572 of file btScalar.h.

◆ btGetInfinityMask()

int btGetInfinityMask ( )

inline

Definition at line 406 of file btScalar.h.

◆ btGetVersion()

int btGetVersion ( )

inline

Definition at line 30 of file btScalar.h.

◆ btGreaterEqual()

bool btGreaterEqual	(	btScalar	a,
		btScalar	eps
	)

inline

Definition at line 578 of file btScalar.h.

◆ btIsDoublePrecision()

int btIsDoublePrecision ( )

inline

Definition at line 35 of file btScalar.h.

◆ btIsNegative()

int btIsNegative ( btScalar x )

inline

Definition at line 583 of file btScalar.h.

◆ btLargeDot()

btScalar btLargeDot	(	const btScalar *	a,
		const btScalar *	b,
		int	n
	)

inline

Definition at line 750 of file btScalar.h.

◆ btLog()

btScalar btLog ( btScalar x )

inline

Definition at line 520 of file btScalar.h.

◆ btMachineIsLittleEndian()

bool btMachineIsLittleEndian ( )

inline

Definition at line 605 of file btScalar.h.

◆ btNormalizeAngle()

btScalar btNormalizeAngle ( btScalar angleInRadians )

inline

Definition at line 781 of file btScalar.h.

◆ btPow()

btScalar btPow	(	btScalar	x,
		btScalar	y
	)

inline

Definition at line 521 of file btScalar.h.

◆ btRadians()

btScalar btRadians ( btScalar x )

inline

Definition at line 588 of file btScalar.h.

◆ btSelect() [1/3]

float btSelect	(	unsigned	condition,
		float	valueIfConditionNonZero,
		float	valueIfConditionZero
	)

inline

Definition at line 633 of file btScalar.h.

◆ btSelect() [2/3]

int btSelect	(	unsigned	condition,
		int	valueIfConditionNonZero,
		int	valueIfConditionZero
	)

inline

Definition at line 627 of file btScalar.h.

◆ btSelect() [3/3]

unsigned btSelect	(	unsigned	condition,
		unsigned	valueIfConditionNonZero,
		unsigned	valueIfConditionZero
	)

inline

btSelect avoids branches, which makes performance much better for consoles like Playstation 3 and XBox 360 Thanks Phil Knight.

Definition at line 617 of file btScalar.h.

◆ btSetZero()

template<typename T >

void btSetZero	(	T *	a,
		int	n
	)

inline

Definition at line 739 of file btScalar.h.

◆ btSin()

btScalar btSin ( btScalar x )

inline

Definition at line 499 of file btScalar.h.

◆ btSqrt()

btScalar btSqrt ( btScalar y )

inline

Definition at line 466 of file btScalar.h.

◆ btSwap()

template<typename T >

void btSwap	(	T &	a,
		T &	b
	)

inline

Definition at line 643 of file btScalar.h.

◆ btSwapEndian() [1/4]

unsigned btSwapEndian ( int val )

inline

Definition at line 661 of file btScalar.h.

◆ btSwapEndian() [2/4]

unsigned short btSwapEndian ( short val )

inline

Definition at line 666 of file btScalar.h.

◆ btSwapEndian() [3/4]

unsigned short btSwapEndian ( unsigned short val )

inline

Definition at line 656 of file btScalar.h.

◆ btSwapEndian() [4/4]

unsigned btSwapEndian ( unsigned val )

inline

Definition at line 651 of file btScalar.h.

◆ btSwapEndianDouble()

void btSwapEndianDouble	(	double	d,
		unsigned char *	dst
	)

inline

Definition at line 706 of file btScalar.h.

◆ btSwapEndianFloat()

unsigned int btSwapEndianFloat ( float d )

inline

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

Definition at line 677 of file btScalar.h.

◆ btTan()

btScalar btTan ( btScalar x )

inline

Definition at line 500 of file btScalar.h.

◆ btUnswapEndianDouble()

double btUnswapEndianDouble ( const unsigned char * src )

inline

Definition at line 721 of file btScalar.h.

◆ btUnswapEndianFloat()

float btUnswapEndianFloat ( unsigned int a )

inline

Definition at line 691 of file btScalar.h.

Variable Documentation

◆ btInfinityMask

btInfMaskConverter btInfinityMask = 0x7F800000

static

Definition at line 404 of file btScalar.h.

Classes

Macros

Typedefs

Functions

Variables

Macro Definition Documentation

◆ ATTRIBUTE_ALIGNED128

◆ ATTRIBUTE_ALIGNED16

◆ ATTRIBUTE_ALIGNED64

◆ BT_BULLET_VERSION

◆ BT_DECLARE_ALIGNED_ALLOCATOR

◆ BT_DECLARE_HANDLE

◆ BT_HALF

◆ BT_INFINITY

◆ BT_LARGE_FLOAT

◆ BT_NOT_EMPTY_FILE

◆ BT_ONE

◆ BT_TWO

◆ BT_ZERO

◆ btAssert

◆ btFsels

◆ btFullAssert

◆ btLikely

◆ btRecip

◆ btRecipSqrt

◆ btUnlikely

◆ SIMD_2_PI

◆ SIMD_DEGS_PER_RAD

◆ SIMD_EPSILON

◆ SIMD_FORCE_INLINE

◆ SIMD_HALF_PI

◆ SIMD_INFINITY

◆ SIMD_PI

◆ SIMD_RADS_PER_DEG

◆ SIMDSQRT12

Typedef Documentation

◆ btScalar

Function Documentation

◆ btAcos()

◆ btAlignPointer()

◆ btAsin()

◆ btAtan()

◆ btAtan2()

◆ btAtan2Fast()

◆ btCos()

◆ btDegrees()

◆ btEqual()

◆ btExp()

◆ btFabs()

◆ btFmod()

◆ btFsel()

◆ btFuzzyZero()

◆ btGetInfinityMask()

◆ btGetVersion()

◆ btGreaterEqual()

◆ btIsDoublePrecision()

◆ btIsNegative()

◆ btLargeDot()

◆ btLog()

◆ btMachineIsLittleEndian()

◆ btNormalizeAngle()

◆ btPow()

◆ btRadians()

◆ btSelect() [1/3]

◆ btSelect() [2/3]

◆ btSelect() [3/3]

◆ btSetZero()

◆ btSin()

◆ btSqrt()

◆ btSwap()

◆ btSwapEndian() [1/4]

◆ btSwapEndian() [2/4]

◆ btSwapEndian() [3/4]

◆ btSwapEndian() [4/4]

◆ btSwapEndianDouble()

◆ btSwapEndianFloat()

◆ btTan()

◆ btUnswapEndianDouble()

◆ btUnswapEndianFloat()

Variable Documentation