petsc-3.11.4 2019-09-28
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VecNormBegin
Starts a split phase norm computation.
Synopsis
#include "petscvec.h"
PetscErrorCode
VecNormBegin
(
Vec
x,
NormType
ntype,
PetscReal
*result)
Input Parameters
x
- the first vector
ntype
- norm type, one of
NORM_1
,
NORM_2
,
NORM_MAX
,
NORM_1_AND_2
result
- where the result will go (can be NULL)
Notes
Each call to
VecNormBegin
() should be paired with a call to
VecNormEnd
().
See Also
VecNormEnd
(),
VecNorm
(),
VecDot
(),
VecMDot
(),
VecDotBegin
(),
VecDotEnd
(),
PetscCommSplitReductionBegin
()
Level
advanced
Location
src/vec/vec/utils/comb.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages