PCMAT#
A preconditioner obtained by applying an operation of the pmat provided in in PCSetOperators(pc,amat,pmat) or KSPSetOperators(ksp,amat,pmat). By default, the operation is MATOP_MULT, meaning that the pmat provides an approximate inverse of amat. If some other operation of pmat implements the approximate inverse, use PCMatSetApplyOperation() to select that operation.
See Also#
KSP: Linear System Solvers, PCCreate(), PCSetType(), PCType, PC, PCSHELL, MatOperation, PCMatSetApplyOperation(), PCMatGetApplyOperation()
Level#
intermediate
Location#
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages