PETSc version 3.15.5
MatShellTestMultTranpose
Compares the multiply transpose routine provided to the MATSHELL with differencing on a given function. 
Synopsis
#include "petscmat.h" 
PetscErrorCode  MatShellTestMultTranspose(Mat mat,PetscErrorCode (*f)(void*,Vec,Vec),Vec base,void *ctx,PetscBool *flg)
Logically Collective on Mat
Input Parameters
|  | mat | - the shell matrix | 
|  | f | - the function | 
|  | base | - differences are computed around this vector, see MatMFFDSetBase(), for Jacobians this is the point at which the Jacobian is being evaluated | 
|  | ctx | - an optional context for the function | 
Output Parameter
|  | flg | - PETSC_TRUE if the multiply is likely correct | 
Options Database
|  | -mat_shell_test_mult_view | - print if any differences are detected between the products and print the difference | 
Fortran Notes
Not supported from Fortran
See Also
 MatCreateShell(), MatShellGetContext(), MatShellGetOperation(), MatShellTestMult()
Level
advanced
Location
src/mat/impls/shell/shell.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages