domain::FunctionsOfTime Namespace Reference

Contains functions of time to support the dual frame system. More...

Classes
class	FixedSpeedCubic
	Sets \(f(t)\) and derivatives using cubic rational functions, such that the first derivative approaches a constant and the second derivative approaches zero. More...
class	FunctionOfTime
	Base class for FunctionsOfTime. More...
class	PiecewisePolynomial
	A function that has a piecewise-constant MaxDerivth derivative. More...
class	SettleToConstant
	Given an initial function of time, transitions the map to a constant-in-time value. More...

Functions
bool	operator!= (const FixedSpeedCubic &lhs, const FixedSpeedCubic &rhs) noexcept
template<size_t MaxDeriv>
bool	operator!= (const PiecewisePolynomial< MaxDeriv > &lhs, const PiecewisePolynomial< MaxDeriv > &rhs) noexcept
template<size_t MaxDeriv>
void	read_spec_piecewise_polynomial (gsl::not_null< std::unordered_map< std::string, domain::FunctionsOfTime::PiecewisePolynomial< MaxDeriv > > * > spec_functions_of_time, const std::string &file_name, const std::map< std::string, std::string > &dataset_name_map) noexcept
	Import SpEC FunctionOfTime data from an H5 file. More...
void	register_derived_with_charm () noexcept
bool	operator!= (const SettleToConstant &lhs, const SettleToConstant &rhs) noexcept

Detailed Description

Contains functions of time to support the dual frame system.

Function Documentation

read_spec_piecewise_polynomial()

template<size_t MaxDeriv>

void domain::FunctionsOfTime::read_spec_piecewise_polynomial ( gsl::not_null< std::unordered_map< std::string, domain::FunctionsOfTime::PiecewisePolynomial< MaxDeriv > > * >  spec_functions_of_time, const std::string &  file_name, const std::map< std::string, std::string > &  dataset_name_map  )

noexcept

Import SpEC FunctionOfTime data from an H5 file.

Columns in the file to be read must have the following form:

• 0 = time
• 1 = time of last update
• 2 = number of components
• 3 = maximum derivative order
• 4 = version
• 5 = function
• 6 = d/dt (function)
• 7 = d^2/dt^2 (function)
• 8 = d^3/dt^3 (function)

If the function has more than one component, columns 5-8 give the first component and its derivatives, columns 9-12 give the second component and its derivatives, etc.

Currently, only support order 3 piecewise polynomials. This could be generalized later, but the SpEC functions of time that we will read in with this action will always be 3rd-order piecewise polynomials.