slepc-3.21.1 2024-04-26
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VecCheckOrthonormality

Checks (or prints) the level of (bi-)orthonormality of a set of vectors.

Synopsis

#include "slepcvec.h" 
PetscErrorCode VecCheckOrthonormality(Vec V[],PetscInt nv,Vec W[],PetscInt nw,Mat B,PetscViewer viewer,PetscReal *lev)
Collective

Input Parameters

V  - a set of vectors
nv  - number of V vectors
W  - an alternative set of vectors (optional)
nw  - number of W vectors
B  - matrix defining the inner product (optional)
viewer  - optional visualization context

Output Parameter

lev  - level of orthogonality (optional)

Notes

This function is equivalent to VecCheckOrthonormality(), but in addition it checks that the diagonal of W'*V (or W'*B*V) is equal to all ones.

See Also

VecCheckOrthogonality()

Level

developer

Location

src/sys/vec/vecutil.c

Examples

src/eps/tutorials/ex47.c
src/svd/tutorials/ex45.c
src/svd/tutorials/ex52.c
src/svd/tutorials/ex53.c


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Index of all manual pages