Adds a reduced vector to the appropriate elements of a full-space vector. vfull[is[i]] += alpha*vreduced[i]
PetscErrorCode VecISAXPY(Vec vfull, IS is, PetscScalar alpha, Vec vreduced)
|vfull ||- the full-space vector
|is ||- the index set for the reduced space
|alpha ||- the scalar coefficient
|vreduced ||- the reduced-space vector
|vfull ||- the sum of the full-space vector and reduced-space vector
The index set identifies entries in the global vector.
Negative indices are skipped; indices outside the ownership range of vfull will raise an error.
Index of all Vec routines
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Index of all manual pages