PETSc version 3.15.5
DMTSCheckJacobian
Check the Jacobian of the exact solution against the residual using the Taylor Test 
Synopsis
#include "petscdmplex.h" 
#include "petscts.h" 
PetscErrorCode DMTSCheckJacobian(TS ts, DM dm, PetscReal t, Vec u, Vec u_t, PetscReal tol, PetscBool *isLinear, PetscReal *convRate)
Input Parameters
|  | ts | - the TS object | 
|  | dm | - the DM | 
|  | t | - the time | 
|  | u | - a DM vector | 
|  | u_t | - a DM vector | 
|  | tol | - A tolerance for the check, or -1 to print the results instead | 
Output Parameters
|  | isLinear | - Flag indicaing that the function looks linear, or NULL | 
|  | convRate | - The rate of convergence of the linear model, or NULL | 
See Also
 DNTSCheckFromOptions(), DMTSCheckResidual(), DNSNESCheckFromOptions(), DMSNESCheckDiscretization(), DMSNESCheckResidual()
Level
developer
Location
src/ts/utils/dmplexts.c
Index of all TS routines
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Index of all manual pages