include/maths.h File Reference

#include <stdlib.h>
#include "types.h"

Classes
struct	quad
Defines
#define	NO_FIX_INLINE   1
#define	D_RAND_MAX   32767
#define	i2f(i)   ((i)<<16)
#define	f2i(f)   ((f)>>16)
#define	f2ir(f)   (((f)+f0_5)>>16)
#define	f2fl(f)   (((float) (f)) / 65536.0)
#define	f2db(f)   (((double) (f)) / 65536.0)
#define	fl2f(f)   ((fix) ((f) * 65536))
#define	f0_0   0
#define	f1_0   0x10000
#define	f2_0   0x20000
#define	f3_0   0x30000
#define	f10_0   0xa0000
#define	f0_5   0x8000
#define	f0_1   0x199a
#define	F0_0   f0_0
#define	F1_0   f1_0
#define	F2_0   f2_0
#define	F3_0   f3_0
#define	F10_0   f10_0
#define	F0_5   f0_5
#define	F0_1   f0_1
Typedefs
typedef int32_t	fix
typedef int16_t	fixang
Functions
void	d_srand (unsigned int seed)
int	d_rand ()
fix	fixmul (fix a, fix b)
fix	fixdiv (fix a, fix b)
fix	fixmuldiv (fix a, fix b, fix c)
void	fixmulaccum (quad *q, fix a, fix b)
fix	fixquadadjust (quad *q)
int32_t	fixdivquadlong (u_int32_t qlow, u_int32_t qhigh, u_int32_t d)
void	fixquadnegate (quad *q)
ushort	long_sqrt (int32_t a)
u_int32_t	quad_sqrt (u_int32_t low, int32_t high)
fix	fix_sqrt (fix a)
void	fix_sincos (fix a, fix *s, fix *c)
void	fix_fastsincos (fix a, fix *s, fix *c)
fixang	fix_asin (fix v)
fixang	fix_acos (fix v)
fixang	fix_atan2 (fix cos, fix sin)
fix	fix_isqrt (fix a)

---

Define Documentation

#define D_RAND_MAX   32767

#define F0_0   f0_0

#define f0_0   0

#define F0_1   f0_1

#define f0_1   0x199a

#define F0_5   f0_5

#define f0_5   0x8000

#define F10_0   f10_0

#define f10_0   0xa0000

#define F1_0   f1_0

#define f1_0   0x10000

#define F2_0   f2_0

#define f2_0   0x20000

#define f2db (  f   )     (((double) (f)) / 65536.0)

#define f2fl (  f   )     (((float) (f)) / 65536.0)

#define f2i (  f   )     ((f)>>16)

#define f2ir (  f   )     (((f)+f0_5)>>16)

#define F3_0   f3_0

#define f3_0   0x30000

#define fl2f (  f   )     ((fix) ((f) * 65536))

#define i2f (  i   )     ((i)<<16)

#define NO_FIX_INLINE   1

---

Typedef Documentation

typedef int32_t fix

typedef int16_t fixang

---

Function Documentation

int d_rand (   )

void d_srand (  unsigned int  seed  )

fixang fix_acos (  fix  v  )

fixang fix_asin (  fix  v  )

fixang fix_atan2 (  fix  cos, fix  sin )

void fix_fastsincos (  fix  a, fix *  s, fix *  c )

fix fix_isqrt (  fix  a  )

void fix_sincos (  fix  a, fix *  s, fix *  c )

fix fix_sqrt (  fix  a  )

fix fixdiv (  fix  a, fix  b )

int32_t fixdivquadlong (  u_int32_t  qlow, u_int32_t  qhigh, u_int32_t  d )

fix fixmul (  fix  a, fix  b )

void fixmulaccum (  quad *  q, fix  a, fix  b )

fix fixmuldiv (  fix  a, fix  b, fix  c )

fix fixquadadjust (  quad *  q  )

void fixquadnegate (  quad *  q  )

ushort long_sqrt (  int32_t  a  )

u_int32_t quad_sqrt (  u_int32_t  low, int32_t  high )

---