conversions.h File Reference

Units conversion constants and functions. More...

#include <math.h>
#include <sys/time.h>
#include <time.h>

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Functions
static int	analog_to_digital (double voltage, double maxvolts, int nbits)
static double	analog_volts (int data, double maxvolts, int nbits)
static double	feet2meters (double feet)
static double	kmph2mmps (double kmph)
static double	meters2feet (double meters)
static double	mmps2mph (double mm)
static double	mph2mmps (double mph)
static double	mph2mps (double mph)
static double	mps2mph (double mps)
static double	tv2secs (struct timeval *tv)
Variables
const double	CM_PER_INCH = 2.54
const double	CM_PER_METER = 100.0
const double	DEGREES_PER_RADIAN = 180.0/M_PI
const double	HALFPI = M_PI / 2.0
const double	INCHES_PER_FOOT = 12.0
const double	METERS_PER_FOOT = INCHES_PER_FOOT * CM_PER_INCH / CM_PER_METER
const double	METERS_PER_MILE = MMETERS_PER_MILE / 1000.0
const long	MINUTES_PER_HOUR = 60
const double	MMETERS_PER_KM = 1000000.0
const double	MMETERS_PER_MILE = 1609344.0
const double	RADIANS_PER_DEGREE = M_PI/180.0
const long	SECONDS_PER_HOUR = SECONDS_PER_MINUTE * MINUTES_PER_HOUR
const long	SECONDS_PER_MINUTE = 60
const double	TWOPI = 2.0 * M_PI

---

Detailed Description

Units conversion constants and functions.

Todo:

use art_msgs/Conversions definitions for multi-language support

Definition in file conversions.h.

---

Function Documentation

static int analog_to_digital	(	double	voltage,
		double	maxvolts,
		int	nbits
	)			[inline, static]

convert analog voltage corresponding digital encoding

Definition at line 101 of file conversions.h.

static double analog_volts	(	int	data,
		double	maxvolts,
		int	nbits
	)			[inline, static]

convert analog input data to corresponding voltage

Definition at line 92 of file conversions.h.

static double feet2meters

(

double

feet

)

[inline, static]

convert from feet to meters

Definition at line 74 of file conversions.h.

static double kmph2mmps

(

double

kmph

)

[inline, static]

Definition at line 51 of file conversions.h.

static double meters2feet

(

double

meters

)

[inline, static]

convert from meters to feet

Definition at line 80 of file conversions.h.

static double mmps2mph

(

double

mm

)

[inline, static]

convert between millimeters per second and miles per hour

Definition at line 46 of file conversions.h.

static double mph2mmps

(

double

mph

)

[inline, static]

Definition at line 56 of file conversions.h.

static double mph2mps

(

double

mph

)

[inline, static]

convert between meters per second and miles per hour

Definition at line 62 of file conversions.h.

static double mps2mph

(

double

mps

)

[inline, static]

convert from meters per second to miles per hour

Definition at line 68 of file conversions.h.

static double tv2secs

(

struct timeval *

tv

)

[inline, static]

convert timeval to seconds

Definition at line 86 of file conversions.h.

---

Variable Documentation

const double CM_PER_INCH = 2.54

Definition at line 28 of file conversions.h.

const double CM_PER_METER = 100.0

Definition at line 29 of file conversions.h.

const double DEGREES_PER_RADIAN = 180.0/M_PI

Definition at line 38 of file conversions.h.

const double HALFPI = M_PI / 2.0

Definition at line 42 of file conversions.h.

const double INCHES_PER_FOOT = 12.0

Unit conversion constants:

Definition at line 27 of file conversions.h.

const double METERS_PER_FOOT = INCHES_PER_FOOT * CM_PER_INCH / CM_PER_METER

Definition at line 30 of file conversions.h.

const double METERS_PER_MILE = MMETERS_PER_MILE / 1000.0

Definition at line 33 of file conversions.h.

const long MINUTES_PER_HOUR = 60

Definition at line 35 of file conversions.h.

const double MMETERS_PER_KM = 1000000.0

Definition at line 31 of file conversions.h.

const double MMETERS_PER_MILE = 1609344.0

Definition at line 32 of file conversions.h.

const double RADIANS_PER_DEGREE = M_PI/180.0

Definition at line 37 of file conversions.h.

const long SECONDS_PER_HOUR = SECONDS_PER_MINUTE * MINUTES_PER_HOUR

Definition at line 36 of file conversions.h.

const long SECONDS_PER_MINUTE = 60

Definition at line 34 of file conversions.h.

const double TWOPI = 2.0 * M_PI

Useful constants

Definition at line 41 of file conversions.h.