ftcalc.h File Reference

#include <ft2build.h>

Include dependency graph for ftcalc.h:

Go to the source code of this file.

Macros
#define	INT_TO_F26DOT6(x)   ( (FT_Long)(x) * 64 ) /* << 6 */
#define	INT_TO_F2DOT14(x)   ( (FT_Long)(x) * 16384 ) /* << 14 */
#define	INT_TO_FIXED(x)   ( (FT_Long)(x) * 65536 ) /* << 16 */
#define	F2DOT14_TO_FIXED(x)   ( (FT_Long)(x) * 4 ) /* << 2 */
#define	FIXED_TO_INT(x)   ( FT_RoundFix( x ) >> 16 )
#define	ROUND_F26DOT6(x)
#define	ADD_INT(a, b)    (FT_Int)( (FT_UInt)(a) + (FT_UInt)(b) )
#define	SUB_INT(a, b)    (FT_Int)( (FT_UInt)(a) - (FT_UInt)(b) )
#define	MUL_INT(a, b)    (FT_Int)( (FT_UInt)(a) * (FT_UInt)(b) )
#define	NEG_INT(a)    (FT_Int)( (FT_UInt)0 - (FT_UInt)(a) )
#define	ADD_LONG(a, b)    (FT_Long)( (FT_ULong)(a) + (FT_ULong)(b) )
#define	SUB_LONG(a, b)    (FT_Long)( (FT_ULong)(a) - (FT_ULong)(b) )
#define	MUL_LONG(a, b)    (FT_Long)( (FT_ULong)(a) * (FT_ULong)(b) )
#define	NEG_LONG(a)    (FT_Long)( (FT_ULong)0 - (FT_ULong)(a) )
#define	ADD_INT32(a, b)    (FT_Int32)( (FT_UInt32)(a) + (FT_UInt32)(b) )
#define	SUB_INT32(a, b)    (FT_Int32)( (FT_UInt32)(a) - (FT_UInt32)(b) )
#define	MUL_INT32(a, b)    (FT_Int32)( (FT_UInt32)(a) * (FT_UInt32)(b) )
#define	NEG_INT32(a)    (FT_Int32)( (FT_UInt32)0 - (FT_UInt32)(a) )

Functions
FT_BEGIN_HEADER	FT_MulDiv_No_Round (FT_Long a, FT_Long b, FT_Long c)
	FT_Matrix_Multiply_Scaled (const FT_Matrix *a, FT_Matrix *b, FT_Long scaling)
	FT_Matrix_Check (const FT_Matrix *matrix)
	FT_Vector_Transform_Scaled (FT_Vector *vector, const FT_Matrix *matrix, FT_Long scaling)
	FT_Vector_NormLen (FT_Vector *vector)
	ft_corner_orientation (FT_Pos in_x, FT_Pos in_y, FT_Pos out_x, FT_Pos out_y)
	ft_corner_is_flat (FT_Pos in_x, FT_Pos in_y, FT_Pos out_x, FT_Pos out_y)
	FT_MSB (FT_UInt32 z)
	FT_Hypot (FT_Fixed x, FT_Fixed y)

Macro Definition Documentation

ADD_INT

#define ADD_INT	(		a,
			b
	)		(FT_Int)( (FT_UInt)(a) + (FT_UInt)(b) )

ADD_INT32

#define ADD_INT32	(		a,
			b
	)		(FT_Int32)( (FT_UInt32)(a) + (FT_UInt32)(b) )

ADD_LONG

#define ADD_LONG	(		a,
			b
	)		(FT_Long)( (FT_ULong)(a) + (FT_ULong)(b) )

F2DOT14_TO_FIXED

#define F2DOT14_TO_FIXED

(

x

)

( (FT_Long)(x) * 4 ) /* << 2 */

FIXED_TO_INT

#define FIXED_TO_INT

(

x

)

( FT_RoundFix( x ) >> 16 )

INT_TO_F26DOT6

#define INT_TO_F26DOT6

(

x

)

( (FT_Long)(x) * 64 ) /* << 6 */

INT_TO_F2DOT14

#define INT_TO_F2DOT14

(

x

)

( (FT_Long)(x) * 16384 ) /* << 14 */

INT_TO_FIXED

#define INT_TO_FIXED

(

x

)

( (FT_Long)(x) * 65536 ) /* << 16 */

MUL_INT

#define MUL_INT	(		a,
			b
	)		(FT_Int)( (FT_UInt)(a) * (FT_UInt)(b) )

MUL_INT32

#define MUL_INT32	(		a,
			b
	)		(FT_Int32)( (FT_UInt32)(a) * (FT_UInt32)(b) )

MUL_LONG

#define MUL_LONG	(		a,
			b
	)		(FT_Long)( (FT_ULong)(a) * (FT_ULong)(b) )

NEG_INT

#define NEG_INT

(

a

)

(FT_Int)( (FT_UInt)0 - (FT_UInt)(a) )

NEG_INT32

#define NEG_INT32

(

a

)

(FT_Int32)( (FT_UInt32)0 - (FT_UInt32)(a) )

NEG_LONG

#define NEG_LONG

(

a

)

(FT_Long)( (FT_ULong)0 - (FT_ULong)(a) )

ROUND_F26DOT6

#define ROUND_F26DOT6

(

x

)

Value:

                                        ( x >= 0 ? (    ( (x) + 32 ) & -64 )     \
                                        : ( -( ( 32 - (x) ) & -64 ) ) )

SUB_INT

#define SUB_INT	(		a,
			b
	)		(FT_Int)( (FT_UInt)(a) - (FT_UInt)(b) )

SUB_INT32

#define SUB_INT32	(		a,
			b
	)		(FT_Int32)( (FT_UInt32)(a) - (FT_UInt32)(b) )

SUB_LONG

#define SUB_LONG	(		a,
			b
	)		(FT_Long)( (FT_ULong)(a) - (FT_ULong)(b) )

Function Documentation

ft_corner_is_flat()

ft_corner_is_flat	(	FT_Pos	in_x,
		FT_Pos	in_y,
		FT_Pos	out_x,
		FT_Pos	out_y
	)

ft_corner_orientation()

ft_corner_orientation	(	FT_Pos	in_x,
		FT_Pos	in_y,
		FT_Pos	out_x,
		FT_Pos	out_y
	)

FT_Hypot()

FT_Hypot	(	FT_Fixed	x,
		FT_Fixed	y
	)

FT_Matrix_Check()

FT_Matrix_Check

(

const FT_Matrix *

matrix

)

FT_Matrix_Multiply_Scaled()

FT_Matrix_Multiply_Scaled	(	const FT_Matrix *	a,
		FT_Matrix *	b,
		FT_Long	scaling
	)

FT_MSB()

FT_MSB

(

FT_UInt32

z

)

FT_MulDiv_No_Round()

FT_BEGIN_HEADER FT_MulDiv_No_Round	(	FT_Long	a,
		FT_Long	b,
		FT_Long	c
	)

FT_Vector_NormLen()

FT_Vector_NormLen

(

FT_Vector *

vector

)

FT_Vector_Transform_Scaled()

FT_Vector_Transform_Scaled	(	FT_Vector *	vector,
		const FT_Matrix *	matrix,
		FT_Long	scaling
	)