slepc-3.22.1 2024-10-28
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