:orphan:
# TSComputeLinearStability
computes the linear stability function at a point 
## Synopsis
```
#include "petscts.h"  
PetscErrorCode TSComputeLinearStability(TS ts, PetscReal xr, PetscReal xi, PetscReal *yr, PetscReal *yi)
```
Collective


## Input Parameters

- ***ts -*** the `TS` context
- ***xr -*** real part of input argument
- ***xi -*** imaginary part of input argument



## Output Parameters

- ***yr -*** real part of function value
- ***yi -*** imaginary part of function value





## See Also
 [](ch_ts), `TS`, `TSSetRHSFunction()`, `TSComputeIFunction()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/interface/ts.c.html#TSComputeLinearStability">src/ts/interface/ts.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/impls/explicit/euler/euler.c.html#TSComputeLinearStability_Euler">TSComputeLinearStability_Euler in src/ts/impls/explicit/euler/euler.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/impls/implicit/theta/theta.c.html#TSComputeLinearStability_Theta">TSComputeLinearStability_Theta in src/ts/impls/implicit/theta/theta.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/impls/mimex/mimex.c.html#TSComputeLinearStability_Mimex">TSComputeLinearStability_Mimex in src/ts/impls/mimex/mimex.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/impls/symplectic/basicsymplectic/basicsymplectic.c.html#TSComputeLinearStability_BasicSymplectic">TSComputeLinearStability_BasicSymplectic in src/ts/impls/symplectic/basicsymplectic/basicsymplectic.c</A><BR>


---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ts/interface/ts.c)


[Index of all TS routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)