BVOrthogonalizeVec#

Orthogonalize a given vector with respect to all active columns.

Synopsis#

#include "slepcbv.h"   
PetscErrorCode BVOrthogonalizeVec(BV bv,Vec v,PetscScalar *H,PetscReal *norm,PetscBool *lindep)

Collective

Input Parameters#

  • bv - the basis vectors context

  • v - the vector

Output Parameters#

  • H - (optional) coefficients computed during orthogonalization

  • norm - (optional) norm of the vector after being orthogonalized

  • lindep - (optional) flag indicating that refinement did not improve the quality of orthogonalization

Notes#

This function is equivalent to BVOrthogonalizeColumn() but orthogonalizes a vector as an argument rather than taking one of the BV columns. The vector is orthogonalized against all active columns (k) and the constraints. If H is given, it must have enough space to store k-l coefficients, where l is the number of leading columns.

In the case of an indefinite inner product, the lindep parameter is not computed (set to false).

See Also#

BVOrthogonalizeColumn(), BVSetOrthogonalization(), BVSetActiveColumns(), BVGetNumConstraints()

Level#

advanced

Location#

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

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