Gets a vector representing part of another vector
PetscErrorCode VecGetSubVector(Vec X,IS is,Vec *Y)
Collective on IS (and Vec if nonlocal entries are needed)
|X ||- vector from which to extract a subvector
|is ||- index set representing portion of X to extract
Y -subvector corresponding to is
The subvector Y should be returned with VecRestoreSubVector().
This function may return a subvector without making a copy, therefore it is not safe to use the original vector while
modifying the subvector. Other non-overlapping subvectors can still be obtained from X using this function.
ImplementationsVecGetSubVector_Nest in src/vec/vec/impls/nest/vecnest.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages