petsc-3.10.5 2019-03-28
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# TSErrorWeightedENorm

compute a weighted error norm based on supplied absolute and relative tolerances

### Synopsis

    #include "petscts.h"
    PetscErrorCode TSErrorWeightedENorm(TS ts,Vec E,Vec U,Vec Y,NormType wnormtype,PetscReal *norm,PetscReal *norma,PetscReal *normr)

Collective on TS

### Input Arguments

| ts | - time stepping context
| E | - error vector
| U | - state vector, usually ts->vec_sol
| Y | - state vector, previous time step
| wnormtype | - norm type, either NORM_2 or NORM_INFINITY

### Output Arguments

norm -weighted norm, a value of 1.0 achieves a balance between absolute and relative tolerances
norma -weighted norm, a value of 1.0 means that the error meets the absolute tolerance set by the user
normr -weighted norm, a value of 1.0 means that the error meets the relative tolerance set by the user

### Options Database Keys

-ts_adapt_wnormtype <wnormtype> -2, INFINITY

### See Also

TSErrorWeightedENormInfinity(), TSErrorWeightedENorm2(), TSErrorWeightedNormInfinity(), TSErrorWeightedNorm2()

### Level

developer

### Location

src/ts/interface/ts.c
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages