scram::mef::Exponential

Negative exponential distribution with hourly failure rate and time.

#include <exponential.h>

Inherits from scram::mef::ExpressionFormula< Exponential >, scram::mef::Expression, boost::noncopyable

Public Functions

	Name
template <typename T > <br>double	Compute(T && eval)<br>Evaluates the expression.
double	Compute(double lambda, double time)
	Exponential(Expression * lambda, Expression * t)<br>Constructor for exponential expression with two arguments.
virtual void	Validate() const override
virtual Interval	interval() override

Additional inherited members

Public Functions inherited from scram::mef::ExpressionFormula< Exponential >

	Name
virtual double	value()<br>Computes the expression with argument expression default values.
	Expression(std::vector< Expression * > args ={})<br>Constructor for use by derived classes to register their arguments.

Public Functions inherited from scram::mef::Expression

	Name
	Expression(std::vector< Expression * > args ={})<br>Constructor for use by derived classes to register their arguments.
virtual	~Expression() =default
const std::vector< Expression * > &	args() const
virtual double	value() =0
virtual bool	IsDeviate()<br>Determines if the value of the expression contains deviate expressions.
double	Sample()
void	Reset()<br>This routine resets the sampling to get new values.

Protected Functions inherited from scram::mef::Expression

	Name
void	AddArg(Expression * arg)<br>Registers an additional argument expression.

Public Functions Documentation

function Compute

template <typename T >
inline double Compute(
    T && eval
)

Evaluates the expression.

function Compute

double Compute(
    double lambda,
    double time
)

function Exponential

Exponential(
    Expression * lambda,
    Expression * t
)

Constructor for exponential expression with two arguments.

Parameters:

• lambda Hourly rate of failure.
• t Mission time in hours.

function Validate

virtual void Validate() const override

Exceptions:

• DomainError The failure rate or time is negative.

Reimplements: scram::mef::Expression::Validate

function interval

inline virtual Interval interval() override

Return: The domain interval for validation purposes only.

Reimplements: scram::mef::Expression::interval

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Updated on 2025-11-11 at 16:51:08 +0000