# IPNormBegin

Starts a split phase norm computation.

### Synopsis

    #include "slepcip.h"
    PetscErrorCode IPNormBegin(IP ip,Vec x,PetscReal *norm)

Collective on IP and Vec

### Input Parameters

| ip | - the inner product context
| x | - input vector
| norm | - where the result will go

### Notes

Each call to IPNormBegin() should be paired with a call to IPNormEnd().

### See Also

IPNormEnd(), IPNorm(), IPInnerProduct(), IPMInnerProduct(),
IPInnerProductBegin(), IPInnerProductEnd()

Location: src/ip/ipdot.c
Index of all IP routines
Table of Contents for all manual pages
Index of all manual pages