petsc-3.3-p7 2013-05-11

MatDuplicateOption

Indicates if a duplicated sparse matrix should have its numerical values copied over or just its nonzero structure.

typedef enum {MAT_DO_NOT_COPY_VALUES,MAT_COPY_VALUES,MAT_SHARE_NONZERO_PATTERN} MatDuplicateOption;

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

  MAT_SHARE_NONZERO_PATTERN - the i and j arrays in the new matrix will be shared with the original matrix

                              this also triggers the MAT_DO_NOT_COPY_VALUES option. This is used when you

                              have several matrices with the same nonzero pattern.