petsc-3.12.1 2019-10-22
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# MatStructure

Indicates if two matrices have the same nonzero structure

### Synopsis

    typedef enum {DIFFERENT_NONZERO_PATTERN,SUBSET_NONZERO_PATTERN,SAME_NONZERO_PATTERN} MatStructure;

Any additions/changes here MUST also be made in include/petsc/finclude/petscmat.h

### See Also

MatCopy(), MatAXPY()

### Level

beginner

### Location

src/mat/../../include/petscmat.h

### Examples

src/mat/examples/tutorials/ex9.c.html
src/ksp/ksp/examples/tutorials/ex9.c.html
src/ksp/ksp/examples/tutorials/ex29.c.html
src/ksp/ksp/examples/tutorials/ex34.c.html
src/ts/examples/tutorials/ex3.c.html
src/ts/examples/tutorials/ex50.c.html
src/tao/unconstrained/examples/tutorials/spectraladjointassimilation.c.html
src/tao/pde_constrained/examples/tutorials/elliptic.c.html
src/tao/pde_constrained/examples/tutorials/parabolic.c.html
src/tao/pde_constrained/examples/tutorials/hyperbolic.c.html
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages