TSAlphaGetParams — PETSc 3.21.4 documentation

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# TSAlphaGetParams

gets the algorithmic parameters for `TSALPHA`

## Synopsis

    #include "petscts.h"
    PetscErrorCode TSAlphaGetParams(TS ts, PetscReal *alpha_m, PetscReal *alpha_f, PetscReal *gamma)

Not Collective

## Input Parameter

- ts - timestepping context

## Output Parameters

- alpha_m - algorithmic parameter

- alpha_f - algorithmic parameter

- gamma - algorithmic parameter

## Note

Use of this function is normally only required to hack `TSALPHA` to use a modified integration scheme. Users should call `TSAlphaSetRadius()` to set the high-frequency damping (i.e. spectral radius of the method) in order so select optimal values for these parameters.

## See Also

TS: Scalable ODE and DAE Solvers, `TS`, `TSALPHA`, `TSAlphaSetRadius()`, `TSAlphaSetParams()`

## Level

advanced

## Location

src/ts/impls/implicit/alpha/alpha1.c

## Implementations

TSAlphaGetParams_Alpha() in src/ts/impls/implicit/alpha/alpha1.c

Index of all TS routines
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Index of all manual pages