petsc-3.11.4 2019-09-28
KSPGetResidualHistory
Gets the array used to hold the residual history and the number of residuals it contains.
Synopsis
#include "petscksp.h"
PetscErrorCode KSPGetResidualHistory(KSP ksp,PetscReal *a[],PetscInt *na)
Not Collective
Input Parameter
ksp -iterative context obtained from KSPCreate()
Output Parameters
| a | - pointer to array to hold history (or NULL)
|
| na | - number of used entries in a (or NULL)
|
Notes
Can only be called after a KSPSetResidualHistory() otherwise a and na are set to zero
The Fortran version of this routine has a calling sequence
call KSPGetResidualHistory(KSP ksp, integer na, integer ierr)
note that you have passed a Fortran array into KSPSetResidualHistory() and you need
to access the residual values from this Fortran array you provided. Only the na (number of
residual norms currently held) is set.
Keywords
get, residual, history, norm
See Also
KSPGetResidualHistory(), KSP
Level
advanced
Location
src/ksp/ksp/interface/itfunc.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages