mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2025-11-04 05:50:31 -05:00
43 lines
1.6 KiB
Plaintext
43 lines
1.6 KiB
Plaintext
|
[/============================================================================
|
||
|
|
Boost.odeint
|
||
|
|
|
||
|
|
Copyright 2011 Mario Mulansky
|
||
|
|
Copyright 2011-2012 Karsten Ahnert
|
||
|
|
|
||
|
|
Use, modification and distribution is subject to the Boost Software License,
|
||
|
|
Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
|
||
|
|
http://www.boost.org/LICENSE_1_0.txt)
|
||
|
|
=============================================================================/]
|
||
|
|
|
||
|
|
|
||
|
|
[section System]
|
||
|
|
|
||
|
|
[heading Description]
|
||
|
|
|
||
|
|
The System concept models the algorithmic implementation of the rhs. of the ODE ['x' = f(x,t)].
|
||
|
|
The only requirement for this concept is that it should be callable with a specific parameter syntax (see below).
|
||
|
|
A System is typically implemented as a function or a functor.
|
||
|
|
Systems fulfilling this concept are required by all Runge-Kutta steppers as well as the Bulirsch-Stoer steppers.
|
||
|
|
However, symplectic and implicit steppers work with other system concepts, see __symplectic_system and __implicit_system.
|
||
|
|
|
||
|
|
[heading Notation]
|
||
|
|
|
||
|
|
[variablelist
|
||
|
|
[[`System`] [A type that is a model of System]]
|
||
|
|
[[`State`] [A type representing the state /x/ of the ODE]]
|
||
|
|
[[`Deriv`] [A type representing the derivative /x'/ of the ODE]]
|
||
|
|
[[`Time`] [A type representing the time]]
|
||
|
|
[[`sys`] [An object of type `System`]]
|
||
|
|
[[`x`] [Object of type `State`]]
|
||
|
|
[[`dxdt`] [Object of type `Deriv`]]
|
||
|
|
[[`t`] [Object of type `Time`]]
|
||
|
|
]
|
||
|
|
|
||
|
|
[heading Valid expressions]
|
||
|
|
|
||
|
|
[table
|
||
|
|
[[Name] [Expression] [Type] [Semantics]]
|
||
|
|
[[Calculate ['dx/dt := f(x,t)]] [`sys( x , dxdt , t )`] [`void`] [Calculates f(x,t), the result is stored into dxdt] ]
|
||
|
|
]
|
||
|
|
|
||
|
|
[endsect]
|