fixedptc.h File Reference

#include <stdint.h>

Include dependency graph for fixedptc.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	FIXEDPT_BITS   32
#define	FIXEDPT_WBITS   16
#define	FIXEDPT_VCSID   "$Id$"
#define	FIXEDPT_FBITS   (FIXEDPT_BITS - FIXEDPT_WBITS)
#define	FIXEDPT_FMASK   (((fixedpt)1 << FIXEDPT_FBITS) - 1)
#define	fixedpt_rconst(R)   ((fixedpt)((R) * FIXEDPT_ONE + ((R) >= 0 ? 0.5 : -0.5)))
#define	fixedpt_fromint(I)   ((fixedptd)(I) << FIXEDPT_FBITS)
#define	fixedpt_toint(F)   ((F) >> FIXEDPT_FBITS)
#define	fixedpt_add(A, B)   ((A) + (B))
#define	fixedpt_sub(A, B)   ((A) - (B))
#define	fixedpt_xmul(A, B)   ((fixedpt)(((fixedptd)(A) * (fixedptd)(B)) >> FIXEDPT_FBITS))
#define	fixedpt_xdiv(A, B)   ((fixedpt)(((fixedptd)(A) << FIXEDPT_FBITS) / (fixedptd)(B)))
#define	fixedpt_fracpart(A)   ((fixedpt)(A) & FIXEDPT_FMASK)
#define	FIXEDPT_ONE   ((fixedpt)((fixedpt)1 << FIXEDPT_FBITS))
#define	FIXEDPT_ONE_HALF   (FIXEDPT_ONE >> 1)
#define	FIXEDPT_TWO   (FIXEDPT_ONE + FIXEDPT_ONE)
#define	FIXEDPT_PI   fixedpt_rconst(3.14159265358979323846)
#define	FIXEDPT_TWO_PI   fixedpt_rconst(2 * 3.14159265358979323846)
#define	FIXEDPT_HALF_PI   fixedpt_rconst(3.14159265358979323846 / 2)
#define	FIXEDPT_E   fixedpt_rconst(2.7182818284590452354)
#define	fixedpt_abs(A)   ((A) < 0 ? -(A) : (A))

Typedefs
typedef int32_t	fixedpt
typedef int64_t	fixedptd
typedef uint32_t	fixedptu
typedef uint64_t	fixedptud

Functions
fixedpt	fixedpt_mul (fixedpt A, fixedpt B)
fixedpt	fixedpt_div (fixedpt A, fixedpt B)
void	fixedpt_str (fixedpt A, char *str, int max_dec)
	Convert the given fixedpt number to a decimal string. More...
char *	fixedpt_cstr (const fixedpt A, const int max_dec)
fixedpt	fixedpt_sqrt (fixedpt A)
fixedpt	fixedpt_sin (fixedpt fp)
fixedpt	fixedpt_cos (fixedpt A)
fixedpt	fixedpt_tan (fixedpt A)
fixedpt	fixedpt_exp (fixedpt fp)
fixedpt	fixedpt_ln (fixedpt x)
fixedpt	fixedpt_log (fixedpt x, fixedpt base)
fixedpt	fixedpt_pow (fixedpt n, fixedpt exp)
void	fixedpt_print (fixedpt A)
void	fixedpt_print_file (fixedpt A)

Macro Definition Documentation

fixedpt_abs

#define fixedpt_abs

(

A

)

((A) < 0 ? -(A) : (A))

Definition at line 126 of file fixedptc.h.

Referenced by fixedpt_exp().

fixedpt_add

#define fixedpt_add	(		A,
			B
	)		((A) + (B))

Definition at line 110 of file fixedptc.h.

Referenced by asset_path_fixed_simplified().

FIXEDPT_BITS

#define FIXEDPT_BITS   32

Definition at line 75 of file fixedptc.h.

Referenced by __attribute__(), black_scholes(), and fixedpt_str().

FIXEDPT_E

#define FIXEDPT_E   fixedpt_rconst(2.7182818284590452354)

Definition at line 124 of file fixedptc.h.

FIXEDPT_FBITS

#define FIXEDPT_FBITS   (FIXEDPT_BITS - FIXEDPT_WBITS)

Definition at line 104 of file fixedptc.h.

Referenced by asset_path_fixed_simplified(), fixedpt_cstr(), fixedpt_div(), fixedpt_exp(), fixedpt_ln(), fixedpt_mul(), fixedpt_sqrt(), and processPhoton().

FIXEDPT_FMASK

#define FIXEDPT_FMASK   (((fixedpt)1 << FIXEDPT_FBITS) - 1)

Definition at line 105 of file fixedptc.h.

Referenced by fixedpt_exp().

fixedpt_fracpart

#define fixedpt_fracpart

(

A

)

((fixedpt)(A) & FIXEDPT_FMASK)

Definition at line 116 of file fixedptc.h.

Referenced by __attribute__(), and fixedpt_str().

fixedpt_fromint

#define fixedpt_fromint

(

I

)

((fixedptd)(I) << FIXEDPT_FBITS)

Definition at line 108 of file fixedptc.h.

FIXEDPT_HALF_PI

#define FIXEDPT_HALF_PI   fixedpt_rconst(3.14159265358979323846 / 2)

Definition at line 123 of file fixedptc.h.

Referenced by fixedpt_cos(), and fixedpt_sin().

FIXEDPT_ONE

#define FIXEDPT_ONE   ((fixedpt)((fixedpt)1 << FIXEDPT_FBITS))

Definition at line 118 of file fixedptc.h.

Referenced by fixedpt_cstr(), fixedpt_exp(), fixedpt_ln(), fixedpt_pow(), fixedpt_sin(), fixedpt_sqrt(), and processPhoton().

FIXEDPT_ONE_HALF

#define FIXEDPT_ONE_HALF   (FIXEDPT_ONE >> 1)

Definition at line 119 of file fixedptc.h.

Referenced by fixedpt_exp().

FIXEDPT_PI

#define FIXEDPT_PI   fixedpt_rconst(3.14159265358979323846)

Definition at line 121 of file fixedptc.h.

Referenced by fixedpt_sin().

fixedpt_rconst

#define fixedpt_rconst

(

R

)

((fixedpt)((R) * FIXEDPT_ONE + ((R) >= 0 ? 0.5 : -0.5)))

Definition at line 107 of file fixedptc.h.

Referenced by fixedpt_exp(), fixedpt_ln(), and fixedpt_sin().

fixedpt_sub

#define fixedpt_sub	(		A,
			B
	)		((A) - (B))

Definition at line 111 of file fixedptc.h.

Referenced by asset_path_fixed_simplified().

fixedpt_toint

#define fixedpt_toint

(

F

)

((F) >> FIXEDPT_FBITS)

Definition at line 109 of file fixedptc.h.

Referenced by __attribute__(), and fixedpt_str().

FIXEDPT_TWO

#define FIXEDPT_TWO   (FIXEDPT_ONE + FIXEDPT_ONE)

Definition at line 120 of file fixedptc.h.

Referenced by fixedpt_exp(), fixedpt_ln(), and get_two_normal_fixed().

FIXEDPT_TWO_PI

#define FIXEDPT_TWO_PI   fixedpt_rconst(2 * 3.14159265358979323846)

Definition at line 122 of file fixedptc.h.

FIXEDPT_VCSID

#define FIXEDPT_VCSID   "$Id$"

Definition at line 102 of file fixedptc.h.

FIXEDPT_WBITS

#define FIXEDPT_WBITS   16

Definition at line 95 of file fixedptc.h.

Referenced by __attribute__(), black_scholes(), and fixedpt_str().

fixedpt_xdiv

#define fixedpt_xdiv	(		A,
			B
	)		((fixedpt)(((fixedptd)(A) << FIXEDPT_FBITS) / (fixedptd)(B)))

Definition at line 114 of file fixedptc.h.

fixedpt_xmul

#define fixedpt_xmul	(		A,
			B
	)		((fixedpt)(((fixedptd)(A) * (fixedptd)(B)) >> FIXEDPT_FBITS))

Definition at line 112 of file fixedptc.h.

Typedef Documentation

fixedpt

typedef int32_t fixedpt

Definition at line 79 of file fixedptc.h.

fixedptd

typedef int64_t fixedptd

Definition at line 80 of file fixedptc.h.

fixedptu

typedef uint32_t fixedptu

Definition at line 81 of file fixedptc.h.

fixedptud

typedef uint64_t fixedptud

Definition at line 82 of file fixedptc.h.

Function Documentation

fixedpt_cos()

fixedpt fixedpt_cos

(

fixedpt

A

)

Definition at line 162 of file fixedptc.c.

fixedpt_cstr()

char* fixedpt_cstr	(	const fixedpt	A,
		const int	max_dec
	)

Definition at line 88 of file fixedptc.c.

fixedpt_div()

fixedpt fixedpt_div	(	fixedpt	A,
		fixedpt	B
	)

Definition at line 17 of file fixedptc.c.

fixedpt_exp()

fixedpt fixedpt_exp

(

fixedpt

fp

)

Definition at line 174 of file fixedptc.c.

fixedpt_ln()

fixedpt fixedpt_ln

(

fixedpt

x

)

Definition at line 259 of file fixedptc.c.

fixedpt_log()

fixedpt fixedpt_log	(	fixedpt	x,
		fixedpt	base
	)

Definition at line 298 of file fixedptc.c.

fixedpt_mul()

fixedpt fixedpt_mul	(	fixedpt	A,
		fixedpt	B
	)

Definition at line 11 of file fixedptc.c.

fixedpt_pow()

fixedpt fixedpt_pow	(	fixedpt	n,
		fixedpt	exp
	)

Definition at line 304 of file fixedptc.c.

fixedpt_print()

void fixedpt_print

(

fixedpt

A

)

fixedpt_print_file()

void fixedpt_print_file

(

fixedpt

A

)

fixedpt_sin()

fixedpt fixedpt_sin

(

fixedpt

fp

)

Definition at line 130 of file fixedptc.c.

fixedpt_sqrt()

fixedpt fixedpt_sqrt

(

fixedpt

A

)

Definition at line 96 of file fixedptc.c.

fixedpt_str()

void fixedpt_str	(	fixedpt	A,
		char *	str,
		int	max_dec
	)

Convert the given fixedpt number to a decimal string.

The max_dec argument specifies how many decimal digits to the right of the decimal point to generate. If set to -1, the "default" number of decimal digits will be used (2 for 32-bit fixedpt width, 10 for 64-bit fixedpt width); If set to -2, "all" of the digits will be returned, meaning there will be invalid, bogus digits outside the specified precisions.

Definition at line 35 of file fixedptc.c.

fixedpt_tan()

fixedpt fixedpt_tan

(

fixedpt

A

)

Definition at line 168 of file fixedptc.c.