petsc-master 2020-09-18
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DMTSSetI2Function

set TS implicit function evaluation function for 2nd order systems

Synopsis

#include "petscts.h" 
PetscErrorCode DMTSSetI2Function(DM dm,TSI2Function fun,void *ctx)
Not Collective

Input Arguments

dm - DM to be used with TS
fun - function evaluation routine
ctx - context for residual evaluation

Calling sequence of fun

    PetscErrorCode fun(TS ts,PetscReal t,Vec U,Vec U_t,Vec U_tt,Vec F,ctx);

t - time at step/stage being solved
U - state vector
U_t - time derivative of state vector
U_tt - second time derivative of state vector
F - function vector
ctx - [optional] user-defined context for matrix evaluation routine (may be NULL)

Note

TSSetI2Function() is normally used, but it calls this function internally because the user context is actually associated with the DM.

See Also

TSSetI2Function()

Level

advanced

Location

src/ts/utils/dmts.c
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages