BVGetSizes#

Returns the local and global sizes, and the number of columns.

Synopsis#

#include "slepcbv.h" 
PetscErrorCode BVGetSizes(BV bv,PetscInt *n,PetscInt *N,PetscInt *m)

Not Collective

Input Parameter#

  • bv - the basis vectors

Output Parameters#

  • n - the local size

  • N - the global size

  • m - the number of columns

Note#

Normal usage requires that bv has already been given its sizes, otherwise the call fails. However, this function can also be used to determine if a BV object has been initialized completely (sizes and type). For this, call with n=NULL and N=NULL, then a return value of m=0 indicates that the BV object is not ready for use yet.

See Also#

BV: Basis Vectors, BVSetSizes(), BVSetSizesFromVec()

Level#

beginner

Location#

src/sys/classes/bv/interface/bvbasic.c

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