Namespaces
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Classes
class	Random_

Typedefs
typedef boost::detail::thread::singleton< class Random_ >	Random

Functions
static uint64_t	counter_with_overflow (uint64_t full_value, uint16_t new_value)

static int	ipow (int base, int exp)

static bool	is_bit_mask_index_false (int64_t bit_mask, int index)

static bool	is_bit_mask_index_true (int64_t bit_mask, int index)

static double	linear_interpolate_ (double x, double x0, double y0, double x1, double y1)

static int	sign (double x)

static double	to_degrees (double rad)

static double	to_rad (double degrees)

Variables
static const double	pi = 3.14159265

Typedef Documentation

typedef boost::detail::thread::singleton<class Random_> sr_math_utils::Random

This is the usable singleton of the Random class.

The typical usage for this class is: -> generate double betwen 0 and 1 sr_math_utils::Random::instance().generate<double>()

-> generate integer between 0 and 10 sr_math_utils::Random::instance().generate<int>(0, 10)

-> generate double betwen 0 and 10 sr_math_utils::Random::instance().generate<double>(0, 10)

Definition at line 334 of file sr_math_utils.hpp.

Function Documentation

static uint64_t sr_math_utils::counter_with_overflow	(	uint64_t	full_value,
		uint16_t	new_value
	)

inlinestatic

Increment a counter given a value which can overflow.

WARNING: only works if called often enough: if new_value > last_value but overflowed between the 2 calls, then we're not able to detect the overflow.

Parameters

full_value	the full value (with no overflow)
new_value	the new value we received from the motor.

Returns: The new full value

Definition at line 111 of file sr_math_utils.hpp.

static int sr_math_utils::ipow	(	int	base,
		int	exp
	)

inlinestatic

Definition at line 67 of file sr_math_utils.hpp.

static bool sr_math_utils::is_bit_mask_index_false	(	int64_t	bit_mask,
		int	index
	)

inlinestatic

Definition at line 95 of file sr_math_utils.hpp.

static bool sr_math_utils::is_bit_mask_index_true	(	int64_t	bit_mask,
		int	index
	)

inlinestatic

Definition at line 83 of file sr_math_utils.hpp.

static double sr_math_utils::linear_interpolate_	(	double	x,
		double	x0,
		double	y0,
		double	x1,
		double	y1
	)

inlinestatic

Interpolate linearly between the 2 points, for the given value

y = y0 + (x-x0)*((y1-y0)/(x1-x0))

Parameters

x	the X value to compute the interpolation for.
x0	the X value of our first point
y0	the Y value of our first point
x1	the X value of our second point
y1	the Y value of our second point

Returns: the computed Y value (calibrated value)

Definition at line 139 of file sr_math_utils.hpp.

static int sr_math_utils::sign ( double x )

inlinestatic

Checks the sign of a given number.

Parameters

x	the number we want to study.

Returns: 1 if x is positive, -1 if negative.

Definition at line 278 of file sr_math_utils.hpp.

static double sr_math_utils::to_degrees ( double rad )

inlinestatic

Convert an angle in degrees to an angle in degrees.

Parameters

rad	the value in radians.

Returns: the value in degrees.

Definition at line 62 of file sr_math_utils.hpp.

static double sr_math_utils::to_rad ( double degrees )

inlinestatic

Convert an angle in degrees to an angle in radians.

Parameters

degrees the value in degrees

Returns: the value in radians.

Definition at line 50 of file sr_math_utils.hpp.

Variable Documentation

const double sr_math_utils::pi = 3.14159265

static

Definition at line 41 of file sr_math_utils.hpp.

Namespaces

Classes

Typedefs

Functions

Variables

Typedef Documentation

Function Documentation

Variable Documentation