fttrigon.c File Reference

#include <ft2build.h>

Go to the source code of this file.

Defines
#define	FT_TRIG_COSCALE   0x11616E8EUL
#define	FT_TRIG_MAX_ITERS   23
#define	FT_TRIG_SCALE   1166391785UL /* 0x4585BA38UL */
#define	FT_SIGN_LONG(x)   ( (x) >> ( FT_SIZEOF_LONG * 8 - 1 ) )
#define	FT_SIGN_INT(x)   ( (x) >> ( FT_SIZEOF_INT * 8 - 1 ) )
#define	FT_SIGN_INT32(x)   ( (x) >> 31 )
#define	FT_SIGN_INT16(x)   ( (x) >> 15 )
Functions
static FT_Fixed	ft_trig_downscale (FT_Fixed val)
static FT_Int	ft_trig_prenorm (FT_Vector *vec)
static void	ft_trig_pseudo_rotate (FT_Vector *vec, FT_Angle theta)
static void	ft_trig_pseudo_polarize (FT_Vector *vec)
	FT_Cos (FT_Angle angle)
	FT_Sin (FT_Angle angle)
	FT_Tan (FT_Angle angle)
	FT_Atan2 (FT_Fixed dx, FT_Fixed dy)
	FT_Vector_Unit (FT_Vector *vec, FT_Angle angle)
	FT_Vector_Rotate (FT_Vector *vec, FT_Angle angle)
	FT_Vector_Length (FT_Vector *vec)
	FT_Vector_Polarize (FT_Vector *vec, FT_Fixed *length, FT_Angle *angle)
	FT_Vector_From_Polar (FT_Vector *vec, FT_Fixed length, FT_Angle angle)
	FT_Angle_Diff (FT_Angle angle1, FT_Angle angle2)
Variables
static const FT_Fixed	ft_trig_arctan_table [24]