...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
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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.
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
Name |
Expression |
Type |
Semantics |
---|---|---|---|
Calculate dx/dt := f(x,t) |
|
|
Calculates f(x,t), the result is stored into dxdt |