Math.h File Reference

Go to the source code of this file.

Classes
class	idMath
union	idMath::_flint

Macros
#define	DEG2RAD(a)   ( (a) * idMath::M_DEG2RAD )
#define	RAD2DEG(a)   ( (a) * idMath::M_RAD2DEG )
#define	SEC2MS(t)   ( idMath::FtoiFast( (t) * idMath::M_SEC2MS ) )
#define	MS2SEC(t)   ( (t) * idMath::M_MS2SEC )
#define	ANGLE2SHORT(x)   ( idMath::FtoiFast( (x) * 65536.0f / 360.0f ) & 65535 )
#define	SHORT2ANGLE(x)   ( (x) * ( 360.0f / 65536.0f ) )
#define	ANGLE2BYTE(x)   ( idMath::FtoiFast( (x) * 256.0f / 360.0f ) & 255 )
#define	BYTE2ANGLE(x)   ( (x) * ( 360.0f / 256.0f ) )
#define	FLOATSIGNBITSET(f)   ((*(const unsigned long *)&(f)) >> 31)
#define	FLOATSIGNBITNOTSET(f)   ((~(*(const unsigned long *)&(f))) >> 31)
#define	FLOATNOTZERO(f)   ((*(const unsigned long *)&(f)) & ~(1<<31) )
#define	INTSIGNBITSET(i)   (((const unsigned long)(i)) >> 31)
#define	INTSIGNBITNOTSET(i)   ((~((const unsigned long)(i))) >> 31)
#define	FLOAT_IS_NAN(x)   (((*(const unsigned long *)&x) & 0x7f800000) == 0x7f800000)
#define	FLOAT_IS_INF(x)   (((*(const unsigned long *)&x) & 0x7fffffff) == 0x7f800000)
#define	FLOAT_IS_IND(x)   ((*(const unsigned long *)&x) == 0xffc00000)
#define	FLOAT_IS_DENORMAL(x)
#define	IEEE_FLT_MANTISSA_BITS   23
#define	IEEE_FLT_EXPONENT_BITS   8
#define	IEEE_FLT_EXPONENT_BIAS   127
#define	IEEE_FLT_SIGN_BIT   31
#define	IEEE_DBL_MANTISSA_BITS   52
#define	IEEE_DBL_EXPONENT_BITS   11
#define	IEEE_DBL_EXPONENT_BIAS   1023
#define	IEEE_DBL_SIGN_BIT   63
#define	IEEE_DBLE_MANTISSA_BITS   63
#define	IEEE_DBLE_EXPONENT_BITS   15
#define	IEEE_DBLE_EXPONENT_BIAS   0
#define	IEEE_DBLE_SIGN_BIT   79

Functions
template<class T >
ID_INLINE int	MaxIndex (T x, T y)
template<class T >
ID_INLINE int	MinIndex (T x, T y)
template<class T >
ID_INLINE T	Max3 (T x, T y, T z)
template<class T >
ID_INLINE T	Min3 (T x, T y, T z)
template<class T >
ID_INLINE int	Max3Index (T x, T y, T z)
template<class T >
ID_INLINE int	Min3Index (T x, T y, T z)
template<class T >
ID_INLINE T	Sign (T f)
template<class T >
ID_INLINE T	Square (T x)
template<class T >
ID_INLINE T	Cube (T x)

Macro Definition Documentation

#define ANGLE2BYTE

(

x

)

( idMath::FtoiFast( (x) * 256.0f / 360.0f ) & 255 )

Definition at line 65 of file Math.h.

#define ANGLE2SHORT

(

x

)

( idMath::FtoiFast( (x) * 65536.0f / 360.0f ) & 65535 )

Definition at line 62 of file Math.h.

#define BYTE2ANGLE

(

x

)

( (x) * ( 360.0f / 256.0f ) )

Definition at line 66 of file Math.h.

#define DEG2RAD

(

a

)

( (a) * idMath::M_DEG2RAD )

Definition at line 56 of file Math.h.

#define FLOAT_IS_DENORMAL

(

x

)

Value:

(((*(const unsigned long *)&x) & 0x7f800000) == 0x00000000 && \
                                                                 ((*(const unsigned long *)&x) & 0x007fffff) != 0x00000000 )

Definition at line 77 of file Math.h.

#define FLOAT_IS_IND

(

x

)

((*(const unsigned long *)&x) == 0xffc00000)

Definition at line 76 of file Math.h.

#define FLOAT_IS_INF

(

x

)

(((*(const unsigned long *)&x) & 0x7fffffff) == 0x7f800000)

Definition at line 75 of file Math.h.

#define FLOAT_IS_NAN

(

x

)

(((*(const unsigned long *)&x) & 0x7f800000) == 0x7f800000)

Definition at line 74 of file Math.h.

#define FLOATNOTZERO

(

f

)

((*(const unsigned long *)&(f)) & ~(1<<31) )

Definition at line 70 of file Math.h.

#define FLOATSIGNBITNOTSET

(

f

)

((~(*(const unsigned long *)&(f))) >> 31)

Definition at line 69 of file Math.h.

#define FLOATSIGNBITSET

(

f

)

((*(const unsigned long *)&(f)) >> 31)

Definition at line 68 of file Math.h.

#define IEEE_DBL_EXPONENT_BIAS   1023

Definition at line 87 of file Math.h.

#define IEEE_DBL_EXPONENT_BITS   11

Definition at line 86 of file Math.h.

#define IEEE_DBL_MANTISSA_BITS   52

Definition at line 85 of file Math.h.

#define IEEE_DBL_SIGN_BIT   63

Definition at line 88 of file Math.h.

#define IEEE_DBLE_EXPONENT_BIAS   0

Definition at line 92 of file Math.h.

#define IEEE_DBLE_EXPONENT_BITS   15

Definition at line 91 of file Math.h.

#define IEEE_DBLE_MANTISSA_BITS   63

Definition at line 90 of file Math.h.

#define IEEE_DBLE_SIGN_BIT   79

Definition at line 93 of file Math.h.

#define IEEE_FLT_EXPONENT_BIAS   127

Definition at line 82 of file Math.h.

#define IEEE_FLT_EXPONENT_BITS   8

Definition at line 81 of file Math.h.

#define IEEE_FLT_MANTISSA_BITS   23

Definition at line 80 of file Math.h.

#define IEEE_FLT_SIGN_BIT   31

Definition at line 83 of file Math.h.

#define INTSIGNBITNOTSET

(

i

)

((~((const unsigned long)(i))) >> 31)

Definition at line 72 of file Math.h.

#define INTSIGNBITSET

(

i

)

(((const unsigned long)(i)) >> 31)

Definition at line 71 of file Math.h.

#define MS2SEC

(

t

)

( (t) * idMath::M_MS2SEC )

Definition at line 60 of file Math.h.

#define RAD2DEG

(

a

)

( (a) * idMath::M_RAD2DEG )

Definition at line 57 of file Math.h.

#define SEC2MS

(

t

)

( idMath::FtoiFast( (t) * idMath::M_SEC2MS ) )

Definition at line 59 of file Math.h.

#define SHORT2ANGLE

(

x

)

( (x) * ( 360.0f / 65536.0f ) )

Definition at line 63 of file Math.h.

Function Documentation

template<class T >

ID_INLINE T Cube

(

T

x

)

Definition at line 105 of file Math.h.

template<class T >

ID_INLINE T Max3	(	T	x,
		T	y,
		T	z
	)

Definition at line 98 of file Math.h.

template<class T >

ID_INLINE int Max3Index	(	T	x,
		T	y,
		T	z
	)

Definition at line 100 of file Math.h.

template<class T >

ID_INLINE int MaxIndex	(	T	x,
		T	y
	)

Definition at line 95 of file Math.h.

template<class T >

ID_INLINE T Min3	(	T	x,
		T	y,
		T	z
	)

Definition at line 99 of file Math.h.

template<class T >

ID_INLINE int Min3Index	(	T	x,
		T	y,
		T	z
	)

Definition at line 101 of file Math.h.

template<class T >

ID_INLINE int MinIndex	(	T	x,
		T	y
	)

Definition at line 96 of file Math.h.

template<class T >

ID_INLINE T Sign

(

T

f

)

Definition at line 103 of file Math.h.

template<class T >

ID_INLINE T Square

(

T

x

)

Definition at line 104 of file Math.h.