petsc-3.14.5 2021-03-03
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# TSStep

Steps one time step

### Synopsis

    #include "petscts.h"
    PetscErrorCode  TSStep(TS ts)

Collective on TS

### Input Parameter

| ts | - the TS context obtained from TSCreate()

### Notes

The public interface for the ODE/DAE solvers is TSSolve(), you should almost for sure be using that routine and not this routine.

The hook set using TSSetPreStep() is called before each attempt to take the step. In general, the time step size may be changed due to adaptive error controller or solve failures. Note that steps may contain multiple stages.

This may over-step the final time provided in TSSetMaxTime() depending on the time-step used. TSSolve() interpolates to exactly the time provided in TSSetMaxTime(). One can use TSInterpolate() to determine an interpolated solution within the final timestep.

### See Also

TSCreate(), TSSetUp(), TSDestroy(), TSSolve(), TSSetPreStep(), TSSetPreStage(), TSSetPostStage(), TSInterpolate()

### Level

developer

### Location

src/ts/interface/ts.c

### Examples

src/ts/tutorials/ex6.c.html

### Implementations

TSStep_ARKIMEX in src/ts/impls/arkimex/arkimex.c
TSStep_BDF in src/ts/impls/bdf/bdf.c
TSStep_EIMEX in src/ts/impls/eimex/eimex.c
TSStep_Euler in src/ts/impls/explicit/euler/euler.c
TSStep_RK_MultirateNonsplit in src/ts/impls/explicit/rk/mrk.c
TSStep_RK_MultirateSplit in src/ts/impls/explicit/rk/mrk.c
TSStep_RK in src/ts/impls/explicit/rk/rk.c
TSStep_SSP in src/ts/impls/explicit/ssp/ssp.c
TSStep_GLEE in src/ts/impls/glee/glee.c
TSStep_Alpha in src/ts/impls/implicit/alpha/alpha1.c
TSStep_Alpha in src/ts/impls/implicit/alpha/alpha2.c
TSStep_DiscGrad in src/ts/impls/implicit/discgrad/tsdiscgrad.c
TSStep_Sundials in src/ts/impls/implicit/sundials/sundials.c
TSStep_Theta in src/ts/impls/implicit/theta/theta.c
TSStep_Mimex_Split in src/ts/impls/mimex/mimex.c
TSStep_Mimex_Implicit in src/ts/impls/mimex/mimex.c
TSStep_Mimex in src/ts/impls/mimex/mimex.c
TSStep_MPRK in src/ts/impls/multirate/mprk.c
TSStep_MPRKSPLIT in src/ts/impls/multirate/mprk.c
TSStep_Pseudo in src/ts/impls/pseudo/posindep.c
TSStep_RosW in src/ts/impls/rosw/rosw.c
TSStep_BasicSymplectic in src/ts/impls/symplectic/basicsymplectic/basicsymplectic.c
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages