Stan: src/stan/math/constants.hpp File Reference

#include <boost/math/constants/constants.hpp>

Namespaces
namespace	stan
	Probability, optimization and sampling library.

namespace	stan::math
	Matrices and templated mathematical functions.

Functions
double	stan::math::pi ()
	Return the value of pi.

double	stan::math::e ()
	Return the base of the natural logarithm.

double	stan::math::sqrt2 ()
	Return the square root of two.

double	stan::math::log10 ()
	Return natural logarithm of ten.

double	stan::math::positive_infinity ()
	Return positive infinity.

double	stan::math::negative_infinity ()
	Return negative infinity.

double	stan::math::not_a_number ()
	Return (quiet) not-a-number.

double	stan::math::epsilon ()
	Return minimum positive number representable.

double	stan::math::negative_epsilon ()
	Return maximum negative number (i.e., negative number with smallest absolute value).

Variables
const double	stan::math::E = boost::math::constants::e<double>()
	The base of the natural logarithm, .

const double	stan::math::SQRT_2 = std::sqrt(2.0)
	The value of the square root of 2, $\sqrt{2}$ .

const double	stan::math::INV_SQRT_2 = 1.0 / SQRT_2
	The value of 1 over the square root of 2, $1 / \sqrt{2}$ .

const double	stan::math::LOG_2 = std::log(2.0)
	The natural logarithm of 2, $\log 2$ .

const double	stan::math::LOG_10 = std::log(10.0)
	The natural logarithm of 10, $\log 10$ .

const double	stan::math::INFTY = std::numeric_limits<double>::infinity()
	Positive infinity.

const double	stan::math::NEGATIVE_INFTY = - std::numeric_limits<double>::infinity()
	Negative infinity.

const double	stan::math::NOT_A_NUMBER = std::numeric_limits<double>::quiet_NaN()
	(Quiet) not-a-number value.

const double	stan::math::EPSILON = std::numeric_limits<double>::epsilon()
	Smallest positive value.

const double	stan::math::NEGATIVE_EPSILON = - std::numeric_limits<double>::epsilon()
	Largest negative value (i.e., smallest absolute value).

const double	stan::math::LOG_PI_OVER_FOUR = std::log(boost::math::constants::pi<double>()) / 4.0

const double	stan::math::TWO_OVER_SQRT_PI = 2.0 / std::sqrt(boost::math::constants::pi<double>())

const double	stan::math::NEG_TWO_OVER_SQRT_PI = -TWO_OVER_SQRT_PI

const double	stan::math::INV_SQRT_TWO_PI = 1.0 / std::sqrt(2.0 * boost::math::constants::pi<double>())

Namespaces