CP_Fixed.h File Reference

Defines
#define	oneSInt16Frac   (1 << 14)
#define	halfSInt16Frac   (1 << 13)
#define	CP_Fixed2SInt16Frac(x)   ((x) + 2 >> 2)
#define	ff(x)   ((CP_Fixed)(x) << 16)
#define	INT_TO_FIXED(i)   ((i) << 16)
#define	FIXED_TO_INT(f)   ((f) >> 16)
#define	FIXED_TO_FLOAT(f)   (((double) (f)) * 1.52587890625e-5)
#define	FLOAT_TO_FIXED(f)   ((CP_Fixed) ((f) * 65536.0))
#define	FIXED_ABS(f)   ((f) < 0 ? -(f) : (f))
#define	FIXED_TRUNC(f)   ((f) & 0xffff0000)
#define	FIXED_SIGN(f)   ((unsigned int) (f) >> 31)
#define	FIXED_PRODUCT_SIGN(f, g)   ((unsigned int) ((f) ^ (g)) >> 31)
#define	FIXED_HALF(f)   ((f) / 2)
#define	FIXED_DOUBLE(f)   ((f) << 1)
#define	FIXED_SCALE(f, i)   ((f) * (i))
#define	FIXED_ZERO   (INT_TO_FIXED(0))
#define	FIXED_ONE   (INT_TO_FIXED(1))
#define	FIXED_ONE_HALF   (FIXED_HALF(FIXED_ONE))
#define	FIXED_PI   (FLOAT_TO_FIXED(3.1415926536))
#define	FIXED_2PI   (FLOAT_TO_FIXED(6.2831853072))
#define	FIXED_HALF_PI   (FLOAT_TO_FIXED(1.5707963268))
#define	FIXED_MIN   LONG_MIN
#define	FIXED_MAX   LONG_MAX
#define	CP_FixMul(a, b)   ((CP_Fixed) ((double) (a) * ((double) (b)) * 1.52587890625e-5))
#define	CP_FixMul2_30(a, b)   ((CP_Fixed) ((double) (a) * ((double) (b) * 9.313225746154785e-10)))
#define	CP_FixDiv(a, b)   ((CP_Fixed) (((double) (a) / (double) (b)) * 65536.0))
Typedefs
typedef SInt32	CP_Fixed
Functions
CP_Fixed	CP_FixRatio (SInt16 inNum, SInt16 inDenom)
SInt16	CP_FixRound (CP_Fixed inFixed)
Variables
CPLAT_Begin_Namespace_CPLAT typedef SInt16	LongFrac

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Define Documentation

#define oneSInt16Frac   (1 << 14)

#define halfSInt16Frac   (1 << 13)

#define CP_Fixed2SInt16Frac (  x   )     ((x) + 2 >> 2)

#define ff (  x   )     ((CP_Fixed)(x) << 16)

#define INT_TO_FIXED (  i   )     ((i) << 16)

#define FIXED_TO_INT (  f   )     ((f) >> 16)

#define FIXED_TO_FLOAT (  f   )     (((double) (f)) * 1.52587890625e-5)

#define FLOAT_TO_FIXED (  f   )     ((CP_Fixed) ((f) * 65536.0))

#define FIXED_ABS (  f   )     ((f) < 0 ? -(f) : (f))

#define FIXED_TRUNC (  f   )     ((f) & 0xffff0000)

#define FIXED_SIGN (  f   )     ((unsigned int) (f) >> 31)

#define FIXED_PRODUCT_SIGN (  f, g   )     ((unsigned int) ((f) ^ (g)) >> 31)

#define FIXED_HALF (  f   )     ((f) / 2)

#define FIXED_DOUBLE (  f   )     ((f) << 1)

#define FIXED_SCALE (  f, i   )     ((f) * (i))

#define FIXED_ZERO   (INT_TO_FIXED(0))

#define FIXED_ONE   (INT_TO_FIXED(1))

#define FIXED_ONE_HALF   (FIXED_HALF(FIXED_ONE))

#define FIXED_PI   (FLOAT_TO_FIXED(3.1415926536))

#define FIXED_2PI   (FLOAT_TO_FIXED(6.2831853072))

#define FIXED_HALF_PI   (FLOAT_TO_FIXED(1.5707963268))

#define FIXED_MIN   LONG_MIN

#define FIXED_MAX   LONG_MAX

#define CP_FixMul (  a, b   )     ((CP_Fixed) ((double) (a) * ((double) (b)) * 1.52587890625e-5))

#define CP_FixMul2_30 (  a, b   )     ((CP_Fixed) ((double) (a) * ((double) (b) * 9.313225746154785e-10)))

#define CP_FixDiv (  a, b   )     ((CP_Fixed) (((double) (a) / (double) (b)) * 65536.0))

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Typedef Documentation

typedef SInt32 CP_Fixed

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Function Documentation

CP_Fixed CP_FixRatio (  SInt16  inNum, SInt16  inDenom )

Returns a CP_Fixed number that is the ratio of the passed in numerator and demonator. Parameters: inNum  The numerator of the fixed number. inDenom  The demonator of the fixed number. Returns: CP_Fixed The result of the conversion.

SInt16 CP_FixRound (  CP_Fixed  inFixed  )

Returns a rounded number from passed in fixed number. Parameters: inNum  The numerator of the fixed number. inDenom  The demonator of the fixed number. Exceptions: none  Returns: SInt16 The rounded number.

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Variable Documentation

CPLAT_Begin_Namespace_CPLAT typedef SInt16 LongFrac

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