slepc-3.21.1 2024-04-26
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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

Index of all BV routines
Table of Contents for all manual pages
Index of all manual pages