slepc-3.18.2 2023-01-26
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# BVNormColumnBegin

Starts a split phase norm computation.

### Synopsis

    #include "slepcbv.h"
    PetscErrorCode BVNormColumnBegin(BV bv,PetscInt j,NormType type,PetscReal *val)

### Input Parameters

| bv | - basis vectors
| j | - column number to be used
| type | - the norm type
| val | - the norm

### Note

Each call to BVNormColumnBegin() should be paired with a call to BVNormColumnEnd().

### See Also

BVNormColumnEnd(), BVNormColumn()

### Level

advanced

### Location

src/sys/classes/bv/interface/bvglobal.c
Index of all BV routines
Table of Contents for all manual pages
Index of all manual pages