TSRosWRegister#

register a TSROSW, Rosenbrock W scheme by providing the entries in the Butcher tableau and optionally embedded approximations and interpolation

Synopsis#

#include "petscts.h"   
PetscErrorCode TSRosWRegister(TSRosWType name, PetscInt order, PetscInt s, const PetscReal A[], const PetscReal Gamma[], const PetscReal b[], const PetscReal bembed[], PetscInt pinterp, const PetscReal binterpt[])

Not Collective, but the same schemes should be registered on all processes on which they will be used

Input Parameters#

  • name - identifier for method

  • order - approximation order of method

  • s - number of stages, this is the dimension of the matrices below

  • A - Table of propagated stage coefficients (dimension s*s, row-major), strictly lower triangular

  • Gamma - Table of coefficients in implicit stage equations (dimension s*s, row-major), lower triangular with nonzero diagonal

  • b - Step completion table (dimension s)

  • bembed - Step completion table for a scheme of order one less (dimension s, NULL if no embedded scheme is available)

  • pinterp - Order of the interpolation scheme, equal to the number of columns of binterpt

  • binterpt - Coefficients of the interpolation formula (dimension s*pinterp)

Note#

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

See Also#

TS: Scalable ODE and DAE Solvers, TSROSW

Level#

advanced

Location#

src/ts/impls/rosw/rosw.c

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Index of all manual pages