MatHtoolKernelFn

Function type for the user-supplied kernel callback used by MATHTOOL (MatCreateHtoolFromKernel(), MatHtoolSetKernel()) to evaluate the dense matrix entries on demand

Synopsis

PETSC_EXTERN_TYPEDEF typedef PetscErrorCode    MatHtoolKernelFn(PetscInt, PetscInt, PetscInt, const PetscInt *, const PetscInt *, PetscScalar *, void *);

Synopsis

#include <petscmat.h>
PetscErrorCode MatHtoolKernelFn(PetscInt sdim, PetscInt M, PetscInt N, const PetscInt *J, const PetscInt *K, PetscScalar *ptr, void *ctx)

Calling Sequence

• sdim - the spatial dimension of the source/target geometries

• M - the number of target points

• N - the number of source points

• J - array of M target point indices into the user’s target coordinate array

• K - array of N source point indices into the user’s source coordinate array

• ptr - column-major output buffer of length M*N to fill with kernel values

• ctx - the optional user context passed at registration

See Also

Mat, MATHTOOL, MatCreateHtoolFromKernel(), MatHtoolSetKernel()

Level

intermediate

Location

include/petscmat.h

Examples

src/ksp/ksp/tutorials/ex82.c

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Index of all Mat routines
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Index of all manual pages