TSRKRegister#

Register an TSRK scheme by providing the entries in the Butcher tableau and optionally embedded approximations and interpolation

Synopsis#

#include "petscts.h"   
PetscErrorCode TSRKRegister(TSRKType name, PetscInt order, PetscInt s, const PetscReal A[], const PetscReal b[], const PetscReal c[], const PetscReal bembed[], PetscInt p, const PetscReal binterp[])

Not Collective, but the same schemes should be registered on all processes on which they will be used, No Fortran Support

Input Parameters#

name - identifier for method
order - approximation order of method
s - number of stages, this is the dimension of the matrices below
A - stage coefficients (dimension s*s, row-major)
b - step completion table (dimension s; NULL to use last row of A)
c - abscissa (dimension s; NULL to use row sums of A)
bembed - completion table for embedded method (dimension s; NULL if not available)
p - order of the interpolation scheme, equal to the number of columns of binterp
binterp - coefficients of the interpolation formula (dimension s*p; NULL to reuse b with \(p=1\))

Note#

Several TSRK methods are provided, this function is only needed to create new methods.

Level#

advanced

Location#

src/ts/impls/explicit/rk/rk.c

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