# PCDestroy
Destroys `PC` context that was created with `PCCreate()`. 
## Synopsis
```
#include "petscksp.h" 
PetscErrorCode PCDestroy(PC *pc)
```
Collective


## Input Parameter

- ***pc -*** the preconditioner context





## See Also
 `PC`, `PCCreate()`, `PCSetUp()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/interface/precon.c.html#PCDestroy">src/ksp/pc/interface/precon.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex59.c.html">src/ksp/ksp/tutorials/ex59.c.html</A><BR>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/amgx/amgx.cxx.html#PCDestroy_AMGX">PCDestroy_AMGX in src/ksp/pc/impls/amgx/amgx.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/asm/asm.c.html#PCDestroy_ASM">PCDestroy_ASM in src/ksp/pc/impls/asm/asm.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/bddc/bddc.c.html#PCDestroy_BDDC">PCDestroy_BDDC in src/ksp/pc/impls/bddc/bddc.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/bddc/bddc.c.html#PCDestroy_BDDCIPC">PCDestroy_BDDCIPC in src/ksp/pc/impls/bddc/bddc.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/bjacobi/bjacobi.c.html#PCDestroy_BJacobi">PCDestroy_BJacobi in src/ksp/pc/impls/bjacobi/bjacobi.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/bjacobi/bjkokkos/bjkokkos.kokkos.cxx.html#PCDestroy_BJKOKKOS">PCDestroy_BJKOKKOS in src/ksp/pc/impls/bjacobi/bjkokkos/bjkokkos.kokkos.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/chowiluviennacl/chowiluviennacl.cxx.html#PCDestroy_CHOWILUVIENNACL">PCDestroy_CHOWILUVIENNACL in src/ksp/pc/impls/chowiluviennacl/chowiluviennacl.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/composite/composite.c.html#PCDestroy_Composite">PCDestroy_Composite in src/ksp/pc/impls/composite/composite.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/cp/cp.c.html#PCDestroy_CP">PCDestroy_CP in src/ksp/pc/impls/cp/cp.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/deflation/deflation.c.html#PCDestroy_Deflation">PCDestroy_Deflation in src/ksp/pc/impls/deflation/deflation.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/eisens/eisen.c.html#PCDestroy_Eisenstat">PCDestroy_Eisenstat in src/ksp/pc/impls/eisens/eisen.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/factor/cholesky/cholesky.c.html#PCDestroy_Cholesky">PCDestroy_Cholesky in src/ksp/pc/impls/factor/cholesky/cholesky.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/factor/icc/icc.c.html#PCDestroy_ICC">PCDestroy_ICC in src/ksp/pc/impls/factor/icc/icc.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/factor/ilu/ilu.c.html#PCDestroy_ILU">PCDestroy_ILU in src/ksp/pc/impls/factor/ilu/ilu.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/factor/lu/lu.c.html#PCDestroy_LU">PCDestroy_LU in src/ksp/pc/impls/factor/lu/lu.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/factor/qr/qr.c.html#PCDestroy_QR">PCDestroy_QR in src/ksp/pc/impls/factor/qr/qr.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/fieldsplit/fieldsplit.c.html#PCDestroy_FieldSplit">PCDestroy_FieldSplit in src/ksp/pc/impls/fieldsplit/fieldsplit.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/galerkin/galerkin.c.html#PCDestroy_Galerkin">PCDestroy_Galerkin in src/ksp/pc/impls/galerkin/galerkin.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/gamg/gamg.c.html#PCDestroy_GAMG">PCDestroy_GAMG in src/ksp/pc/impls/gamg/gamg.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/gasm/gasm.c.html#PCDestroy_GASM">PCDestroy_GASM in src/ksp/pc/impls/gasm/gasm.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/h2opus/pch2opus.c.html#PCDestroy_H2OPUS">PCDestroy_H2OPUS in src/ksp/pc/impls/h2opus/pch2opus.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/hmg/hmg.c.html#PCDestroy_HMG">PCDestroy_HMG in src/ksp/pc/impls/hmg/hmg.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/hpddm/pchpddm.cxx.html#PCDestroy_HPDDM">PCDestroy_HPDDM in src/ksp/pc/impls/hpddm/pchpddm.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/hpddm/pchpddm.cxx.html#PCDestroy_HPDDMShell">PCDestroy_HPDDMShell in src/ksp/pc/impls/hpddm/pchpddm.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/hypre/hypre.c.html#PCDestroy_HYPRE">PCDestroy_HYPRE in src/ksp/pc/impls/hypre/hypre.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/hypre/hypre.c.html#PCDestroy_PFMG">PCDestroy_PFMG in src/ksp/pc/impls/hypre/hypre.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/hypre/hypre.c.html#PCDestroy_SysPFMG">PCDestroy_SysPFMG in src/ksp/pc/impls/hypre/hypre.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/hypre/hypre.c.html#PCDestroy_SMG">PCDestroy_SMG in src/ksp/pc/impls/hypre/hypre.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/is/nn/nn.c.html#PCDestroy_NN">PCDestroy_NN in src/ksp/pc/impls/is/nn/nn.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/jacobi/jacobi.c.html#PCDestroy_Jacobi">PCDestroy_Jacobi in src/ksp/pc/impls/jacobi/jacobi.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/kaczmarz/kaczmarz.c.html#PCDestroy_Kaczmarz">PCDestroy_Kaczmarz in src/ksp/pc/impls/kaczmarz/kaczmarz.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/ksp/pcksp.c.html#PCDestroy_KSP">PCDestroy_KSP in src/ksp/pc/impls/ksp/pcksp.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/lmvm/lmvmpc.c.html#PCDestroy_LMVM">PCDestroy_LMVM in src/ksp/pc/impls/lmvm/lmvmpc.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/lsc/lsc.c.html#PCDestroy_LSC">PCDestroy_LSC in src/ksp/pc/impls/lsc/lsc.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/mat/pcmat.c.html#PCDestroy_Mat">PCDestroy_Mat in src/ksp/pc/impls/mat/pcmat.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/mg/mg.c.html#PCDestroy_MG">PCDestroy_MG in src/ksp/pc/impls/mg/mg.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/ml/ml.c.html#PCDestroy_ML">PCDestroy_ML in src/ksp/pc/impls/ml/ml.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/mpi/pcmpi.c.html#PCDestroy_Seq">PCDestroy_Seq in src/ksp/pc/impls/mpi/pcmpi.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/mpi/pcmpi.c.html#PCDestroy_MPI">PCDestroy_MPI in src/ksp/pc/impls/mpi/pcmpi.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/parms/parms.c.html#PCDestroy_PARMS">PCDestroy_PARMS in src/ksp/pc/impls/parms/parms.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/patch/pcpatch.c.html#PCDestroy_PATCH">PCDestroy_PATCH in src/ksp/pc/impls/patch/pcpatch.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/pbjacobi/pbjacobi.c.html#PCDestroy_PBJacobi">PCDestroy_PBJacobi in src/ksp/pc/impls/pbjacobi/pbjacobi.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/redistribute/redistribute.c.html#PCDestroy_Redistribute">PCDestroy_Redistribute in src/ksp/pc/impls/redistribute/redistribute.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/redundant/redundant.c.html#PCDestroy_Redundant">PCDestroy_Redundant in src/ksp/pc/impls/redundant/redundant.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/rowscalingviennacl/rowscalingviennacl.cxx.html#PCDestroy_ROWSCALINGVIENNACL">PCDestroy_ROWSCALINGVIENNACL in src/ksp/pc/impls/rowscalingviennacl/rowscalingviennacl.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/saviennacl/saviennacl.cxx.html#PCDestroy_SAVIENNACL">PCDestroy_SAVIENNACL in src/ksp/pc/impls/saviennacl/saviennacl.cxx</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/shell/shellpc.c.html#PCDestroy_Shell">PCDestroy_Shell in src/ksp/pc/impls/shell/shellpc.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/sor/sor.c.html#PCDestroy_SOR">PCDestroy_SOR in src/ksp/pc/impls/sor/sor.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/spai/ispai.c.html#PCDestroy_SPAI">PCDestroy_SPAI in src/ksp/pc/impls/spai/ispai.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/svd/svd.c.html#PCDestroy_SVD">PCDestroy_SVD in src/ksp/pc/impls/svd/svd.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/telescope/telescope.c.html#PCDestroy_Telescope">PCDestroy_Telescope in src/ksp/pc/impls/telescope/telescope.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/tfs/tfs.c.html#PCDestroy_TFS">PCDestroy_TFS in src/ksp/pc/impls/tfs/tfs.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/vpbjacobi/vpbjacobi.c.html#PCDestroy_VPBJacobi">PCDestroy_VPBJacobi in src/ksp/pc/impls/vpbjacobi/vpbjacobi.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/wb/wb.c.html#PCDestroy_Exotic">PCDestroy_Exotic in src/ksp/pc/impls/wb/wb.c</A><BR>


---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ksp/pc/interface/precon.c)


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