header file for math utilities

#include <math.h>
#include <stdlib.h>
#include <stdint.h>
#include <assert.h>

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#define	PI 3.14159265358979323846264338

#define	to_radians(x) ( (x) * (PI / 180.0 ))

#define	to_degrees(x) ( (x) * (180.0 / M_PI ))

#define	TWOPI_INV (0.5/PI)

#define	TWOPI (2*PI)

static double	sq (double v)

static double	sgn (double v)

static float	randf ()

static float	signed_randf ()

static int	irand (int bound)

static double	mod2pi_positive (double vin)

static double	mod2pi (double vin)

static double	mod2pi_ref (double ref, double vin)

static int	theta_to_int (double theta, int max)

static int	imin (int a, int b)

static int	imax (int a, int b)

static int64_t	imin64 (int64_t a, int64_t b)

static int64_t	imax64 (int64_t a, int64_t b)

static int	iclamp (int v, int minv, int maxv)

static double	fclamp (double v, double minv, double maxv)

Detailed Description

header file for math utilities

Definition in file math_util.h.

Macro Definition Documentation

#define PI 3.14159265358979323846264338

Definition at line 42 of file math_util.h.

#define to_degrees ( x ) ( (x) * (180.0 / M_PI ))

Definition at line 46 of file math_util.h.

#define to_radians ( x ) ( (x) * (PI / 180.0 ))

Definition at line 45 of file math_util.h.

#define TWOPI (2*PI)

Definition at line 79 of file math_util.h.

#define TWOPI_INV (0.5/PI)

Definition at line 78 of file math_util.h.

Function Documentation

static double fclamp	(	double	v,
		double	minv,
		double	maxv
	)

inlinestatic

Definition at line 143 of file math_util.h.

static int iclamp	(	int	v,
		int	minv,
		int	maxv
	)

inlinestatic

Definition at line 138 of file math_util.h.

static int imax	(	int	a,
		int	b
	)

inlinestatic

Definition at line 123 of file math_util.h.

static int64_t imax64	(	int64_t	a,
		int64_t	b
	)

inlinestatic

Definition at line 133 of file math_util.h.

static int imin	(	int	a,
		int	b
	)

inlinestatic

Definition at line 118 of file math_util.h.

static int64_t imin64	(	int64_t	a,
		int64_t	b
	)

inlinestatic

Definition at line 128 of file math_util.h.

static int irand ( int bound )

inlinestatic

Definition at line 70 of file math_util.h.

static double mod2pi ( double vin )

inlinestatic

Map v to [-PI, PI]

Definition at line 91 of file math_util.h.

static double mod2pi_positive ( double vin )

inlinestatic

valid only for v > 0

Definition at line 82 of file math_util.h.

static double mod2pi_ref	(	double	ref,
		double	vin
	)

inlinestatic

Return vin such that it is within PI degrees of ref

Definition at line 100 of file math_util.h.

static float randf ( )

inlinestatic

Definition at line 59 of file math_util.h.

static double sgn ( double v )

inlinestatic

Definition at line 53 of file math_util.h.

static float signed_randf ( )

inlinestatic

Definition at line 64 of file math_util.h.

static double sq ( double v )

inlinestatic

Definition at line 48 of file math_util.h.

static int theta_to_int	(	double	theta,
		int	max
	)

inlinestatic

Definition at line 105 of file math_util.h.