xref: /petsc/include/petscts.h (revision 0fe2f5c28b7479be7cdeb76b0baadd17654373ce)
1 /*
2    User interface for the timestepping package. This package
3    is for use in solving time-dependent PDEs.
4 */
5 #pragma once
6 
7 #include <petscsnes.h>
8 #include <petscconvest.h>
9 
10 /*I <petscts.h> I*/
11 
12 /* SUBMANSEC = TS */
13 
14 /*S
15    TS - Abstract PETSc object that manages integrating an ODE.
16 
17    Level: beginner
18 
19 .seealso: [](integrator_table), [](ch_ts), `TSCreate()`, `TSSetType()`, `TSType`, `SNES`, `KSP`, `PC`, `TSDestroy()`
20 S*/
21 typedef struct _p_TS *TS;
22 
23 /*J
24    TSType - String with the name of a PETSc `TS` method. These are all the time/ODE integrators that PETSc provides.
25 
26    Level: beginner
27 
28    Note:
29    Use `TSSetType()` or the options database key `-ts_type` to set the ODE integrator method to use with a given `TS` object
30 
31 .seealso: [](integrator_table), [](ch_ts), `TSSetType()`, `TS`, `TSRegister()`
32 J*/
33 typedef const char *TSType;
34 #define TSEULER           "euler"
35 #define TSBEULER          "beuler"
36 #define TSBASICSYMPLECTIC "basicsymplectic"
37 #define TSPSEUDO          "pseudo"
38 #define TSCN              "cn"
39 #define TSSUNDIALS        "sundials"
40 #define TSRK              "rk"
41 #define TSPYTHON          "python"
42 #define TSTHETA           "theta"
43 #define TSALPHA           "alpha"
44 #define TSALPHA2          "alpha2"
45 #define TSGLLE            "glle"
46 #define TSGLEE            "glee"
47 #define TSSSP             "ssp"
48 #define TSARKIMEX         "arkimex"
49 #define TSROSW            "rosw"
50 #define TSEIMEX           "eimex"
51 #define TSMIMEX           "mimex"
52 #define TSBDF             "bdf"
53 #define TSRADAU5          "radau5"
54 #define TSMPRK            "mprk"
55 #define TSDISCGRAD        "discgrad"
56 #define TSIRK             "irk"
57 #define TSDIRK            "dirk"
58 
59 /*E
60    TSProblemType - Determines the type of problem this `TS` object is to be used to solve
61 
62    Values:
63  + `TS_LINEAR`    - a linear ODE or DAE
64  - `TS_NONLINEAR` - a nonlinear ODE or DAE
65 
66    Level: beginner
67 
68 .seealso: [](ch_ts), `TS`, `TSCreate()`
69 E*/
70 typedef enum {
71   TS_LINEAR,
72   TS_NONLINEAR
73 } TSProblemType;
74 
75 /*E
76    TSEquationType - type of `TS` problem that is solved
77 
78    Values:
79 +  `TS_EQ_UNSPECIFIED` - (default)
80 .  `TS_EQ_EXPLICIT`    - {ODE and DAE index 1, 2, 3, HI} F(t,U,U_t) := M(t) U_t - G(U,t) = 0
81 -  `TS_EQ_IMPLICIT`    - {ODE and DAE index 1, 2, 3, HI} F(t,U,U_t) = 0
82 
83    Level: beginner
84 
85 .seealso: [](ch_ts), `TS`, `TSGetEquationType()`, `TSSetEquationType()`
86 E*/
87 typedef enum {
88   TS_EQ_UNSPECIFIED               = -1,
89   TS_EQ_EXPLICIT                  = 0,
90   TS_EQ_ODE_EXPLICIT              = 1,
91   TS_EQ_DAE_SEMI_EXPLICIT_INDEX1  = 100,
92   TS_EQ_DAE_SEMI_EXPLICIT_INDEX2  = 200,
93   TS_EQ_DAE_SEMI_EXPLICIT_INDEX3  = 300,
94   TS_EQ_DAE_SEMI_EXPLICIT_INDEXHI = 500,
95   TS_EQ_IMPLICIT                  = 1000,
96   TS_EQ_ODE_IMPLICIT              = 1001,
97   TS_EQ_DAE_IMPLICIT_INDEX1       = 1100,
98   TS_EQ_DAE_IMPLICIT_INDEX2       = 1200,
99   TS_EQ_DAE_IMPLICIT_INDEX3       = 1300,
100   TS_EQ_DAE_IMPLICIT_INDEXHI      = 1500
101 } TSEquationType;
102 PETSC_EXTERN const char *const *TSEquationTypes;
103 
104 /*E
105    TSConvergedReason - reason a `TS` method has converged (integrated to the requested time) or not
106 
107    Values:
108 +  `TS_CONVERGED_ITERATING`          - this only occurs if `TSGetConvergedReason()` is called during the `TSSolve()`
109 .  `TS_CONVERGED_TIME`               - the final time was reached
110 .  `TS_CONVERGED_ITS`                - the maximum number of iterations (time-steps) was reached prior to the final time
111 .  `TS_CONVERGED_USER`               - user requested termination
112 .  `TS_CONVERGED_EVENT`              - user requested termination on event detection
113 .  `TS_CONVERGED_PSEUDO_FATOL`       - stops when function norm decreased by a set amount, used only for `TSPSEUDO`
114 .  `TS_CONVERGED_PSEUDO_FRTOL`       - stops when function norm decreases below a set amount, used only for `TSPSEUDO`
115 .  `TS_DIVERGED_NONLINEAR_SOLVE`     - too many nonlinear solve failures have occurred
116 .  `TS_DIVERGED_STEP_REJECTED`       - too many steps were rejected
117 .  `TSFORWARD_DIVERGED_LINEAR_SOLVE` - tangent linear solve failed
118 -  `TSADJOINT_DIVERGED_LINEAR_SOLVE` - transposed linear solve failed
119 
120    Level: beginner
121 
122 .seealso: [](ch_ts), `TS`, `TSGetConvergedReason()`
123 E*/
124 typedef enum {
125   TS_CONVERGED_ITERATING          = 0,
126   TS_CONVERGED_TIME               = 1,
127   TS_CONVERGED_ITS                = 2,
128   TS_CONVERGED_USER               = 3,
129   TS_CONVERGED_EVENT              = 4,
130   TS_CONVERGED_PSEUDO_FATOL       = 5,
131   TS_CONVERGED_PSEUDO_FRTOL       = 6,
132   TS_DIVERGED_NONLINEAR_SOLVE     = -1,
133   TS_DIVERGED_STEP_REJECTED       = -2,
134   TSFORWARD_DIVERGED_LINEAR_SOLVE = -3,
135   TSADJOINT_DIVERGED_LINEAR_SOLVE = -4
136 } TSConvergedReason;
137 PETSC_EXTERN const char *const *TSConvergedReasons;
138 
139 /*MC
140    TS_CONVERGED_ITERATING - this only occurs if `TSGetConvergedReason()` is called during the `TSSolve()`
141 
142    Level: beginner
143 
144 .seealso: [](ch_ts), `TS`, `TSSolve()`, `TSGetConvergedReason()`, `TSGetAdapt()`
145 M*/
146 
147 /*MC
148    TS_CONVERGED_TIME - the final time was reached
149 
150    Level: beginner
151 
152 .seealso: [](ch_ts), `TS`, `TSSolve()`, `TSGetConvergedReason()`, `TSGetAdapt()`, `TSSetMaxTime()`, `TSGetMaxTime()`, `TSGetSolveTime()`
153 M*/
154 
155 /*MC
156    TS_CONVERGED_ITS - the maximum number of iterations (time-steps) was reached prior to the final time
157 
158    Level: beginner
159 
160 .seealso: [](ch_ts), `TS`, `TSSolve()`, `TSGetConvergedReason()`, `TSGetAdapt()`, `TSSetMaxSteps()`, `TSGetMaxSteps()`
161 M*/
162 
163 /*MC
164    TS_CONVERGED_USER - user requested termination
165 
166    Level: beginner
167 
168 .seealso: [](ch_ts), `TS`, `TSSolve()`, `TSGetConvergedReason()`, `TSSetConvergedReason()`
169 M*/
170 
171 /*MC
172    TS_CONVERGED_EVENT - user requested termination on event detection
173 
174    Level: beginner
175 
176 .seealso: [](ch_ts), `TS`, `TSSolve()`, `TSGetConvergedReason()`, `TSSetConvergedReason()`
177 M*/
178 
179 /*MC
180    TS_CONVERGED_PSEUDO_FRTOL - stops when function norm decreased by a set amount, used only for `TSPSEUDO`
181 
182    Options Database Key:
183 .   -ts_pseudo_frtol <rtol> - use specified rtol
184 
185    Level: beginner
186 
187 .seealso: [](ch_ts), `TS`, `TSSolve()`, `TSGetConvergedReason()`, `TSSetConvergedReason()`, `TS_CONVERGED_PSEUDO_FATOL`
188 M*/
189 
190 /*MC
191    TS_CONVERGED_PSEUDO_FATOL - stops when function norm decreases below a set amount, used only for `TSPSEUDO`
192 
193    Options Database Key:
194 .   -ts_pseudo_fatol <atol> - use specified atol
195 
196    Level: beginner
197 
198 .seealso: [](ch_ts), `TS`, `TSSolve()`, `TSGetConvergedReason()`, `TSSetConvergedReason()`, `TS_CONVERGED_PSEUDO_FRTOL`
199 M*/
200 
201 /*MC
202    TS_DIVERGED_NONLINEAR_SOLVE - too many nonlinear solves failed
203 
204    Level: beginner
205 
206    Note:
207    See `TSSetMaxSNESFailures()` for how to allow more nonlinear solver failures.
208 
209 .seealso: [](ch_ts), `TS`, `TSSolve()`, `TSGetConvergedReason()`, `TSGetAdapt()`, `TSGetSNES()`, `SNESGetConvergedReason()`, `TSSetMaxSNESFailures()`
210 M*/
211 
212 /*MC
213    TS_DIVERGED_STEP_REJECTED - too many steps were rejected
214 
215    Level: beginner
216 
217    Notes:
218    See `TSSetMaxStepRejections()` for how to allow more step rejections.
219 
220 .seealso: [](ch_ts), `TS`, `TSSolve()`, `TSGetConvergedReason()`, `TSGetAdapt()`, `TSSetMaxStepRejections()`
221 M*/
222 
223 /*E
224    TSExactFinalTimeOption - option for handling of final time step
225 
226    Values:
227 +  `TS_EXACTFINALTIME_STEPOVER`    - Don't do anything if requested final time is exceeded
228 .  `TS_EXACTFINALTIME_INTERPOLATE` - Interpolate back to final time
229 -  `TS_EXACTFINALTIME_MATCHSTEP`   - Adapt final time step to match the final time requested
230 
231    Level: beginner
232 
233 .seealso: [](ch_ts), `TS`, `TSGetConvergedReason()`, `TSSetExactFinalTime()`, `TSGetExactFinalTime()`
234 E*/
235 typedef enum {
236   TS_EXACTFINALTIME_UNSPECIFIED = 0,
237   TS_EXACTFINALTIME_STEPOVER    = 1,
238   TS_EXACTFINALTIME_INTERPOLATE = 2,
239   TS_EXACTFINALTIME_MATCHSTEP   = 3
240 } TSExactFinalTimeOption;
241 PETSC_EXTERN const char *const TSExactFinalTimeOptions[];
242 
243 /* Logging support */
244 PETSC_EXTERN PetscClassId TS_CLASSID;
245 PETSC_EXTERN PetscClassId DMTS_CLASSID;
246 PETSC_EXTERN PetscClassId TSADAPT_CLASSID;
247 
248 PETSC_EXTERN PetscErrorCode TSInitializePackage(void);
249 PETSC_EXTERN PetscErrorCode TSFinalizePackage(void);
250 
251 PETSC_EXTERN PetscErrorCode TSCreate(MPI_Comm, TS *);
252 PETSC_EXTERN PetscErrorCode TSClone(TS, TS *);
253 PETSC_EXTERN PetscErrorCode TSDestroy(TS *);
254 
255 PETSC_EXTERN PetscErrorCode TSSetProblemType(TS, TSProblemType);
256 PETSC_EXTERN PetscErrorCode TSGetProblemType(TS, TSProblemType *);
257 PETSC_EXTERN PetscErrorCode TSMonitor(TS, PetscInt, PetscReal, Vec);
258 PETSC_EXTERN PetscErrorCode TSMonitorSet(TS, PetscErrorCode (*)(TS, PetscInt, PetscReal, Vec, void *), void *, PetscCtxDestroyFn *);
259 PETSC_EXTERN PetscErrorCode TSMonitorSetFromOptions(TS, const char[], const char[], const char[], PetscErrorCode (*)(TS, PetscInt, PetscReal, Vec, PetscViewerAndFormat *), PetscErrorCode (*)(TS, PetscViewerAndFormat *));
260 PETSC_EXTERN PetscErrorCode TSMonitorCancel(TS);
261 
262 PETSC_EXTERN PetscErrorCode TSSetOptionsPrefix(TS, const char[]);
263 PETSC_EXTERN PetscErrorCode TSAppendOptionsPrefix(TS, const char[]);
264 PETSC_EXTERN PetscErrorCode TSGetOptionsPrefix(TS, const char *[]);
265 PETSC_EXTERN PetscErrorCode TSSetFromOptions(TS);
266 PETSC_EXTERN PetscErrorCode TSSetUp(TS);
267 PETSC_EXTERN PetscErrorCode TSReset(TS);
268 
269 PETSC_EXTERN PetscErrorCode TSSetSolution(TS, Vec);
270 PETSC_EXTERN PetscErrorCode TSGetSolution(TS, Vec *);
271 
272 PETSC_EXTERN PetscErrorCode TS2SetSolution(TS, Vec, Vec);
273 PETSC_EXTERN PetscErrorCode TS2GetSolution(TS, Vec *, Vec *);
274 
275 PETSC_EXTERN PetscErrorCode TSGetSolutionComponents(TS, PetscInt *, Vec *);
276 PETSC_EXTERN PetscErrorCode TSGetAuxSolution(TS, Vec *);
277 PETSC_EXTERN PetscErrorCode TSGetTimeError(TS, PetscInt, Vec *);
278 PETSC_EXTERN PetscErrorCode TSSetTimeError(TS, Vec);
279 
280 PETSC_EXTERN PetscErrorCode TSSetRHSJacobianP(TS, Mat, PetscErrorCode (*)(TS, PetscReal, Vec, Mat, void *), void *);
281 PETSC_EXTERN PetscErrorCode TSGetRHSJacobianP(TS, Mat *, PetscErrorCode (**)(TS, PetscReal, Vec, Mat, void *), void **);
282 PETSC_EXTERN PetscErrorCode TSComputeRHSJacobianP(TS, PetscReal, Vec, Mat);
283 PETSC_EXTERN PetscErrorCode TSSetIJacobianP(TS, Mat, PetscErrorCode (*)(TS, PetscReal, Vec, Vec, PetscReal, Mat, void *), void *);
284 PETSC_EXTERN PetscErrorCode TSGetIJacobianP(TS, Mat *, PetscErrorCode (**)(TS, PetscReal, Vec, Vec, PetscReal, Mat, void *), void **);
285 PETSC_EXTERN PetscErrorCode TSComputeIJacobianP(TS, PetscReal, Vec, Vec, PetscReal, Mat, PetscBool);
286 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 5, 0, "TSGetQuadratureTS() then TSComputeRHSJacobianP()", ) PetscErrorCode TSComputeDRDPFunction(TS, PetscReal, Vec, Vec *);
287 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 5, 0, "TSGetQuadratureTS() then TSComputeRHSJacobian()", ) PetscErrorCode TSComputeDRDUFunction(TS, PetscReal, Vec, Vec *);
288 PETSC_EXTERN PetscErrorCode TSSetIHessianProduct(TS, Vec *, PetscErrorCode (*)(TS, PetscReal, Vec, Vec *, Vec, Vec *, void *), Vec *, PetscErrorCode (*)(TS, PetscReal, Vec, Vec *, Vec, Vec *, void *), Vec *, PetscErrorCode (*)(TS, PetscReal, Vec, Vec *, Vec, Vec *, void *), Vec *, PetscErrorCode (*)(TS, PetscReal, Vec, Vec *, Vec, Vec *, void *), void *);
289 PETSC_EXTERN PetscErrorCode TSComputeIHessianProductFunctionUU(TS, PetscReal, Vec, Vec[], Vec, Vec[]);
290 PETSC_EXTERN PetscErrorCode TSComputeIHessianProductFunctionUP(TS, PetscReal, Vec, Vec[], Vec, Vec[]);
291 PETSC_EXTERN PetscErrorCode TSComputeIHessianProductFunctionPU(TS, PetscReal, Vec, Vec[], Vec, Vec[]);
292 PETSC_EXTERN PetscErrorCode TSComputeIHessianProductFunctionPP(TS, PetscReal, Vec, Vec[], Vec, Vec[]);
293 PETSC_EXTERN PetscErrorCode TSSetRHSHessianProduct(TS, Vec[], PetscErrorCode (*)(TS, PetscReal, Vec, Vec *, Vec, Vec *, void *), Vec[], PetscErrorCode (*)(TS, PetscReal, Vec, Vec *, Vec, Vec *, void *), Vec[], PetscErrorCode (*)(TS, PetscReal, Vec, Vec *, Vec, Vec *, void *), Vec[], PetscErrorCode (*)(TS, PetscReal, Vec, Vec *, Vec, Vec *, void *), void *);
294 PETSC_EXTERN PetscErrorCode TSComputeRHSHessianProductFunctionUU(TS, PetscReal, Vec, Vec[], Vec, Vec[]);
295 PETSC_EXTERN PetscErrorCode TSComputeRHSHessianProductFunctionUP(TS, PetscReal, Vec, Vec[], Vec, Vec[]);
296 PETSC_EXTERN PetscErrorCode TSComputeRHSHessianProductFunctionPU(TS, PetscReal, Vec, Vec[], Vec, Vec[]);
297 PETSC_EXTERN PetscErrorCode TSComputeRHSHessianProductFunctionPP(TS, PetscReal, Vec, Vec[], Vec, Vec[]);
298 PETSC_EXTERN PetscErrorCode TSSetCostHessianProducts(TS, PetscInt, Vec[], Vec[], Vec);
299 PETSC_EXTERN PetscErrorCode TSGetCostHessianProducts(TS, PetscInt *, Vec *[], Vec *[], Vec *);
300 PETSC_EXTERN PetscErrorCode TSComputeSNESJacobian(TS, Vec, Mat, Mat);
301 
302 /*S
303    TSTrajectory - Abstract PETSc object that stores the trajectory (solution of ODE/DAE at each time step)
304 
305    Level: advanced
306 
307 .seealso: [](ch_ts), `TS`, `TSSetSaveTrajectory()`, `TSTrajectoryCreate()`, `TSTrajectorySetType()`, `TSTrajectoryDestroy()`, `TSTrajectoryReset()`
308 S*/
309 typedef struct _p_TSTrajectory *TSTrajectory;
310 
311 /*J
312    TSTrajectoryType - String with the name of a PETSc `TS` trajectory storage method
313 
314    Level: intermediate
315 
316 .seealso: [](ch_ts), `TS`, `TSSetSaveTrajectory()`, `TSTrajectoryCreate()`, `TSTrajectoryDestroy()`
317 J*/
318 typedef const char *TSTrajectoryType;
319 #define TSTRAJECTORYBASIC         "basic"
320 #define TSTRAJECTORYSINGLEFILE    "singlefile"
321 #define TSTRAJECTORYMEMORY        "memory"
322 #define TSTRAJECTORYVISUALIZATION "visualization"
323 
324 PETSC_EXTERN PetscFunctionList TSTrajectoryList;
325 PETSC_EXTERN PetscClassId      TSTRAJECTORY_CLASSID;
326 PETSC_EXTERN PetscBool         TSTrajectoryRegisterAllCalled;
327 
328 PETSC_EXTERN PetscErrorCode TSSetSaveTrajectory(TS);
329 PETSC_EXTERN PetscErrorCode TSResetTrajectory(TS);
330 PETSC_EXTERN PetscErrorCode TSRemoveTrajectory(TS);
331 
332 PETSC_EXTERN PetscErrorCode TSTrajectoryCreate(MPI_Comm, TSTrajectory *);
333 PETSC_EXTERN PetscErrorCode TSTrajectoryReset(TSTrajectory);
334 PETSC_EXTERN PetscErrorCode TSTrajectoryDestroy(TSTrajectory *);
335 PETSC_EXTERN PetscErrorCode TSTrajectoryView(TSTrajectory, PetscViewer);
336 PETSC_EXTERN PetscErrorCode TSTrajectorySetType(TSTrajectory, TS, TSTrajectoryType);
337 PETSC_EXTERN PetscErrorCode TSTrajectoryGetType(TSTrajectory, TS, TSTrajectoryType *);
338 PETSC_EXTERN PetscErrorCode TSTrajectorySet(TSTrajectory, TS, PetscInt, PetscReal, Vec);
339 PETSC_EXTERN PetscErrorCode TSTrajectoryGet(TSTrajectory, TS, PetscInt, PetscReal *);
340 PETSC_EXTERN PetscErrorCode TSTrajectoryGetVecs(TSTrajectory, TS, PetscInt, PetscReal *, Vec, Vec);
341 PETSC_EXTERN PetscErrorCode TSTrajectoryGetUpdatedHistoryVecs(TSTrajectory, TS, PetscReal, Vec *, Vec *);
342 PETSC_EXTERN PetscErrorCode TSTrajectoryGetNumSteps(TSTrajectory, PetscInt *);
343 PETSC_EXTERN PetscErrorCode TSTrajectoryRestoreUpdatedHistoryVecs(TSTrajectory, Vec *, Vec *);
344 PETSC_EXTERN PetscErrorCode TSTrajectorySetFromOptions(TSTrajectory, TS);
345 PETSC_EXTERN PetscErrorCode TSTrajectoryRegister(const char[], PetscErrorCode (*)(TSTrajectory, TS));
346 PETSC_EXTERN PetscErrorCode TSTrajectoryRegisterAll(void);
347 PETSC_EXTERN PetscErrorCode TSTrajectorySetUp(TSTrajectory, TS);
348 PETSC_EXTERN PetscErrorCode TSTrajectorySetUseHistory(TSTrajectory, PetscBool);
349 PETSC_EXTERN PetscErrorCode TSTrajectorySetMonitor(TSTrajectory, PetscBool);
350 PETSC_EXTERN PetscErrorCode TSTrajectorySetVariableNames(TSTrajectory, const char *const *);
351 PETSC_EXTERN PetscErrorCode TSTrajectorySetTransform(TSTrajectory, PetscErrorCode (*)(void *, Vec, Vec *), PetscCtxDestroyFn *, void *);
352 PETSC_EXTERN PetscErrorCode TSTrajectorySetSolutionOnly(TSTrajectory, PetscBool);
353 PETSC_EXTERN PetscErrorCode TSTrajectoryGetSolutionOnly(TSTrajectory, PetscBool *);
354 PETSC_EXTERN PetscErrorCode TSTrajectorySetKeepFiles(TSTrajectory, PetscBool);
355 PETSC_EXTERN PetscErrorCode TSTrajectorySetDirname(TSTrajectory, const char[]);
356 PETSC_EXTERN PetscErrorCode TSTrajectorySetFiletemplate(TSTrajectory, const char[]);
357 PETSC_EXTERN PetscErrorCode TSGetTrajectory(TS, TSTrajectory *);
358 
359 typedef enum {
360   TJ_REVOLVE,
361   TJ_CAMS,
362   TJ_PETSC
363 } TSTrajectoryMemoryType;
364 PETSC_EXTERN const char *const TSTrajectoryMemoryTypes[];
365 
366 PETSC_EXTERN PetscErrorCode TSTrajectoryMemorySetType(TSTrajectory, TSTrajectoryMemoryType);
367 PETSC_EXTERN PetscErrorCode TSTrajectorySetMaxCpsRAM(TSTrajectory, PetscInt);
368 PETSC_EXTERN PetscErrorCode TSTrajectorySetMaxCpsDisk(TSTrajectory, PetscInt);
369 PETSC_EXTERN PetscErrorCode TSTrajectorySetMaxUnitsRAM(TSTrajectory, PetscInt);
370 PETSC_EXTERN PetscErrorCode TSTrajectorySetMaxUnitsDisk(TSTrajectory, PetscInt);
371 
372 PETSC_EXTERN PetscErrorCode TSSetCostGradients(TS, PetscInt, Vec[], Vec[]);
373 PETSC_EXTERN PetscErrorCode TSGetCostGradients(TS, PetscInt *, Vec *[], Vec *[]);
374 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 12, 0, "TSCreateQuadratureTS() and TSForwardSetSensitivities()", ) PetscErrorCode TSSetCostIntegrand(TS, PetscInt, Vec, PetscErrorCode (*)(TS, PetscReal, Vec, Vec, void *), PetscErrorCode (*)(TS, PetscReal, Vec, Vec *, void *), PetscErrorCode (*)(TS, PetscReal, Vec, Vec *, void *), PetscBool, void *);
375 PETSC_EXTERN PetscErrorCode TSGetCostIntegral(TS, Vec *);
376 PETSC_EXTERN PetscErrorCode TSComputeCostIntegrand(TS, PetscReal, Vec, Vec);
377 PETSC_EXTERN PetscErrorCode TSCreateQuadratureTS(TS, PetscBool, TS *);
378 PETSC_EXTERN PetscErrorCode TSGetQuadratureTS(TS, PetscBool *, TS *);
379 
380 PETSC_EXTERN PetscErrorCode TSAdjointSetFromOptions(TS, PetscOptionItems);
381 PETSC_EXTERN PetscErrorCode TSAdjointMonitor(TS, PetscInt, PetscReal, Vec, PetscInt, Vec[], Vec[]);
382 PETSC_EXTERN PetscErrorCode TSAdjointMonitorSet(TS, PetscErrorCode (*)(TS, PetscInt, PetscReal, Vec, PetscInt, Vec *, Vec *, void *), void *, PetscCtxDestroyFn *);
383 PETSC_EXTERN PetscErrorCode TSAdjointMonitorCancel(TS);
384 PETSC_EXTERN PetscErrorCode TSAdjointMonitorSetFromOptions(TS, const char[], const char[], const char[], PetscErrorCode (*)(TS, PetscInt, PetscReal, Vec, PetscInt, Vec *, Vec *, PetscViewerAndFormat *), PetscErrorCode (*)(TS, PetscViewerAndFormat *));
385 
386 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 5, 0, "TSSetRHSJacobianP()", ) PetscErrorCode TSAdjointSetRHSJacobian(TS, Mat, PetscErrorCode (*)(TS, PetscReal, Vec, Mat, void *), void *);
387 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 5, 0, "TSComputeRHSJacobianP()", ) PetscErrorCode TSAdjointComputeRHSJacobian(TS, PetscReal, Vec, Mat);
388 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 5, 0, "TSGetQuadratureTS()", ) PetscErrorCode TSAdjointComputeDRDPFunction(TS, PetscReal, Vec, Vec *);
389 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 5, 0, "TSGetQuadratureTS()", ) PetscErrorCode TSAdjointComputeDRDYFunction(TS, PetscReal, Vec, Vec *);
390 PETSC_EXTERN PetscErrorCode TSAdjointSolve(TS);
391 PETSC_EXTERN PetscErrorCode TSAdjointSetSteps(TS, PetscInt);
392 
393 PETSC_EXTERN PetscErrorCode TSAdjointStep(TS);
394 PETSC_EXTERN PetscErrorCode TSAdjointSetUp(TS);
395 PETSC_EXTERN PetscErrorCode TSAdjointReset(TS);
396 PETSC_EXTERN PetscErrorCode TSAdjointCostIntegral(TS);
397 PETSC_EXTERN PetscErrorCode TSAdjointSetForward(TS, Mat);
398 PETSC_EXTERN PetscErrorCode TSAdjointResetForward(TS);
399 
400 PETSC_EXTERN PetscErrorCode TSForwardSetSensitivities(TS, PetscInt, Mat);
401 PETSC_EXTERN PetscErrorCode TSForwardGetSensitivities(TS, PetscInt *, Mat *);
402 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 12, 0, "TSCreateQuadratureTS()", ) PetscErrorCode TSForwardSetIntegralGradients(TS, PetscInt, Vec[]);
403 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 12, 0, "TSForwardGetSensitivities()", ) PetscErrorCode TSForwardGetIntegralGradients(TS, PetscInt *, Vec *[]);
404 PETSC_EXTERN PetscErrorCode TSForwardSetUp(TS);
405 PETSC_EXTERN PetscErrorCode TSForwardReset(TS);
406 PETSC_EXTERN PetscErrorCode TSForwardCostIntegral(TS);
407 PETSC_EXTERN PetscErrorCode TSForwardStep(TS);
408 PETSC_EXTERN PetscErrorCode TSForwardSetInitialSensitivities(TS, Mat);
409 PETSC_EXTERN PetscErrorCode TSForwardGetStages(TS, PetscInt *, Mat *[]);
410 
411 PETSC_EXTERN PetscErrorCode TSSetMaxSteps(TS, PetscInt);
412 PETSC_EXTERN PetscErrorCode TSGetMaxSteps(TS, PetscInt *);
413 PETSC_EXTERN PetscErrorCode TSSetRunSteps(TS, PetscInt);
414 PETSC_EXTERN PetscErrorCode TSGetRunSteps(TS, PetscInt *);
415 PETSC_EXTERN PetscErrorCode TSSetMaxTime(TS, PetscReal);
416 PETSC_EXTERN PetscErrorCode TSGetMaxTime(TS, PetscReal *);
417 PETSC_EXTERN PetscErrorCode TSSetExactFinalTime(TS, TSExactFinalTimeOption);
418 PETSC_EXTERN PetscErrorCode TSGetExactFinalTime(TS, TSExactFinalTimeOption *);
419 PETSC_EXTERN PetscErrorCode TSSetEvaluationTimes(TS, PetscInt, PetscReal[]);
420 PETSC_EXTERN PetscErrorCode TSGetEvaluationTimes(TS, PetscInt *, const PetscReal *[]);
421 PETSC_EXTERN PetscErrorCode TSGetEvaluationSolutions(TS, PetscInt *, const PetscReal *[], Vec *[]);
422 PETSC_EXTERN PetscErrorCode TSSetTimeSpan(TS, PetscInt, PetscReal[]);
423 
424 /*@C
425   TSGetTimeSpan - gets the time span set with `TSSetTimeSpan()`
426 
427   Not Collective
428 
429   Input Parameter:
430 . ts - the time-stepper
431 
432   Output Parameters:
433 + n          - number of the time points (>=2)
434 - span_times - array of the time points. The first element and the last element are the initial time and the final time respectively.
435 
436   Level: deprecated
437 
438   Note:
439   Deprecated, use `TSGetEvaluationTimes()`.
440 
441   The values obtained are valid until the `TS` object is destroyed.
442 
443   Both `n` and `span_times` can be `NULL`.
444 
445 .seealso: [](ch_ts), `TS`, `TSGetEvaluationTimes()`, `TSSetTimeSpan()`, `TSSetEvaluationTimes()`, `TSGetEvaluationSolutions()`
446  @*/
447 PETSC_DEPRECATED_FUNCTION(3, 23, 0, "TSGetEvaluationTimes()", ) static inline PetscErrorCode TSGetTimeSpan(TS ts, PetscInt *n, const PetscReal *span_times[])
448 {
449   return TSGetEvaluationTimes(ts, n, span_times);
450 }
451 
452 /*@C
453   TSGetTimeSpanSolutions - Get the number of solutions and the solutions at the time points specified by the time span.
454 
455   Input Parameter:
456 . ts - the `TS` context obtained from `TSCreate()`
457 
458   Output Parameters:
459 + nsol - the number of solutions
460 - Sols - the solution vectors
461 
462   Level: deprecated
463 
464   Notes:
465   Deprecated, use `TSGetEvaluationSolutions()`.
466 
467   Both `nsol` and `Sols` can be `NULL`.
468 
469   Some time points in the time span may be skipped by `TS` so that `nsol` is less than the number of points specified by `TSSetTimeSpan()`.
470   For example, manipulating the step size, especially with a reduced precision, may cause `TS` to step over certain points in the span.
471   This issue is alleviated in `TSGetEvaluationSolutions()` by returning the solution times that `Sols` were recorded at.
472 
473 .seealso: [](ch_ts), `TS`, `TSGetEvaluationSolutions()`, `TSSetTimeSpan()`, `TSGetEvaluationTimes()`, `TSSetEvaluationTimes()`
474  @*/
475 PETSC_DEPRECATED_FUNCTION(3, 23, 0, "TSGetEvaluationSolutions()", ) static inline PetscErrorCode TSGetTimeSpanSolutions(TS ts, PetscInt *nsol, Vec **Sols)
476 {
477   return TSGetEvaluationSolutions(ts, nsol, NULL, Sols);
478 }
479 
480 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 8, 0, "TSSetTime()", ) PetscErrorCode TSSetInitialTimeStep(TS, PetscReal, PetscReal);
481 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 8, 0, "TSSetMax()", ) PetscErrorCode TSSetDuration(TS, PetscInt, PetscReal);
482 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 8, 0, "TSGetMax()", ) PetscErrorCode TSGetDuration(TS, PetscInt *, PetscReal *);
483 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 8, 0, "TSGetStepNumber()", ) PetscErrorCode TSGetTimeStepNumber(TS, PetscInt *);
484 PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 8, 0, "TSGetStepNumber()", ) PetscErrorCode TSGetTotalSteps(TS, PetscInt *);
485 
486 PETSC_EXTERN PetscErrorCode TSMonitorDefault(TS, PetscInt, PetscReal, Vec, PetscViewerAndFormat *);
487 PETSC_EXTERN PetscErrorCode TSMonitorWallClockTime(TS, PetscInt, PetscReal, Vec, PetscViewerAndFormat *);
488 PETSC_EXTERN PetscErrorCode TSMonitorWallClockTimeSetUp(TS, PetscViewerAndFormat *);
489 PETSC_EXTERN PetscErrorCode TSMonitorExtreme(TS, PetscInt, PetscReal, Vec, PetscViewerAndFormat *);
490 
491 typedef struct _n_TSMonitorDrawCtx *TSMonitorDrawCtx;
492 PETSC_EXTERN PetscErrorCode         TSMonitorDrawCtxCreate(MPI_Comm, const char[], const char[], int, int, int, int, PetscInt, TSMonitorDrawCtx *);
493 PETSC_EXTERN PetscErrorCode         TSMonitorDrawCtxDestroy(TSMonitorDrawCtx *);
494 PETSC_EXTERN PetscErrorCode         TSMonitorDrawSolution(TS, PetscInt, PetscReal, Vec, void *);
495 PETSC_EXTERN PetscErrorCode         TSMonitorDrawSolutionPhase(TS, PetscInt, PetscReal, Vec, void *);
496 PETSC_EXTERN PetscErrorCode         TSMonitorDrawError(TS, PetscInt, PetscReal, Vec, void *);
497 PETSC_EXTERN PetscErrorCode         TSMonitorDrawSolutionFunction(TS, PetscInt, PetscReal, Vec, void *);
498 
499 PETSC_EXTERN PetscErrorCode TSAdjointMonitorDefault(TS, PetscInt, PetscReal, Vec, PetscInt, Vec[], Vec[], PetscViewerAndFormat *);
500 PETSC_EXTERN PetscErrorCode TSAdjointMonitorDrawSensi(TS, PetscInt, PetscReal, Vec, PetscInt, Vec[], Vec[], void *);
501 
502 typedef struct _n_TSMonitorSolutionCtx *TSMonitorSolutionCtx;
503 PETSC_EXTERN PetscErrorCode             TSMonitorSolution(TS, PetscInt, PetscReal, Vec, PetscViewerAndFormat *);
504 PETSC_EXTERN PetscErrorCode             TSMonitorSolutionSetup(TS, PetscViewerAndFormat *);
505 
506 typedef struct _n_TSMonitorVTKCtx *TSMonitorVTKCtx;
507 PETSC_EXTERN PetscErrorCode        TSMonitorSolutionVTK(TS, PetscInt, PetscReal, Vec, TSMonitorVTKCtx);
508 PETSC_EXTERN PetscErrorCode        TSMonitorSolutionVTKDestroy(TSMonitorVTKCtx *);
509 PETSC_EXTERN PetscErrorCode        TSMonitorSolutionVTKCtxCreate(const char *, TSMonitorVTKCtx *);
510 
511 PETSC_EXTERN PetscErrorCode TSStep(TS);
512 PETSC_EXTERN PetscErrorCode TSEvaluateWLTE(TS, NormType, PetscInt *, PetscReal *);
513 PETSC_EXTERN PetscErrorCode TSEvaluateStep(TS, PetscInt, Vec, PetscBool *);
514 PETSC_EXTERN PetscErrorCode TSSolve(TS, Vec);
515 PETSC_EXTERN PetscErrorCode TSGetEquationType(TS, TSEquationType *);
516 PETSC_EXTERN PetscErrorCode TSSetEquationType(TS, TSEquationType);
517 PETSC_EXTERN PetscErrorCode TSGetConvergedReason(TS, TSConvergedReason *);
518 PETSC_EXTERN PetscErrorCode TSSetConvergedReason(TS, TSConvergedReason);
519 PETSC_EXTERN PetscErrorCode TSGetSolveTime(TS, PetscReal *);
520 PETSC_EXTERN PetscErrorCode TSGetSNESIterations(TS, PetscInt *);
521 PETSC_EXTERN PetscErrorCode TSGetKSPIterations(TS, PetscInt *);
522 PETSC_EXTERN PetscErrorCode TSGetStepRejections(TS, PetscInt *);
523 PETSC_EXTERN PetscErrorCode TSSetMaxStepRejections(TS, PetscInt);
524 PETSC_EXTERN PetscErrorCode TSGetSNESFailures(TS, PetscInt *);
525 PETSC_EXTERN PetscErrorCode TSSetMaxSNESFailures(TS, PetscInt);
526 PETSC_EXTERN PetscErrorCode TSSetErrorIfStepFails(TS, PetscBool);
527 PETSC_EXTERN PetscErrorCode TSRestartStep(TS);
528 PETSC_EXTERN PetscErrorCode TSRollBack(TS);
529 PETSC_EXTERN PetscErrorCode TSGetStepRollBack(TS, PetscBool *);
530 
531 PETSC_EXTERN PetscErrorCode TSGetStages(TS, PetscInt *, Vec *[]);
532 
533 PETSC_EXTERN PetscErrorCode TSGetTime(TS, PetscReal *);
534 PETSC_EXTERN PetscErrorCode TSSetTime(TS, PetscReal);
535 PETSC_EXTERN PetscErrorCode TSGetPrevTime(TS, PetscReal *);
536 PETSC_EXTERN PetscErrorCode TSGetTimeStep(TS, PetscReal *);
537 PETSC_EXTERN PetscErrorCode TSSetTimeStep(TS, PetscReal);
538 PETSC_EXTERN PetscErrorCode TSGetStepNumber(TS, PetscInt *);
539 PETSC_EXTERN PetscErrorCode TSSetStepNumber(TS, PetscInt);
540 
541 /*S
542   TSRHSFunctionFn - A prototype of a `TS` right-hand-side evaluation function that would be passed to `TSSetRHSFunction()`
543 
544   Calling Sequence:
545 + ts  - timestep context
546 . t   - current time
547 . u   - input vector
548 . F   - function vector
549 - ctx - [optional] user-defined function context
550 
551   Level: beginner
552 
553   Note:
554   The deprecated `TSRHSFunction` still works as a replacement for `TSRHSFunctionFn` *.
555 
556 .seealso: [](ch_ts), `TS`, `TSSetRHSFunction()`, `DMTSSetRHSFunction()`, `TSIFunctionFn`,
557 `TSIJacobianFn`, `TSRHSJacobianFn`
558 S*/
559 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode TSRHSFunctionFn(TS ts, PetscReal t, Vec u, Vec F, void *ctx);
560 
561 PETSC_EXTERN_TYPEDEF typedef TSRHSFunctionFn *TSRHSFunction;
562 
563 /*S
564   TSRHSJacobianFn - A prototype of a `TS` right-hand-side Jacobian evaluation function that would be passed to `TSSetRHSJacobian()`
565 
566   Calling Sequence:
567 + ts   - the `TS` context obtained from `TSCreate()`
568 . t    - current time
569 . u    - input vector
570 . Amat - (approximate) Jacobian matrix
571 . Pmat - matrix from which preconditioner is to be constructed (usually the same as `Amat`)
572 - ctx  - [optional] user-defined context for matrix evaluation routine
573 
574   Level: beginner
575 
576   Note:
577   The deprecated `TSRHSJacobian` still works as a replacement for `TSRHSJacobianFn` *.
578 
579 .seealso: [](ch_ts), `TS`, `TSSetRHSJacobian()`, `DMTSSetRHSJacobian()`, `TSRHSFunctionFn`,
580 `TSIFunctionFn`, `TSIJacobianFn`
581 S*/
582 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode TSRHSJacobianFn(TS ts, PetscReal t, Vec u, Mat Amat, Mat Pmat, void *ctx);
583 
584 PETSC_EXTERN_TYPEDEF typedef TSRHSJacobianFn *TSRHSJacobian;
585 
586 /*S
587   TSRHSJacobianPFn - A prototype of a function that computes the Jacobian of G w.r.t. the parameters P where
588   U_t = G(U,P,t), as well as the location to store the matrix that would be passed to `TSSetRHSJacobianP()`
589 
590   Calling Sequence:
591 + ts  - the `TS` context
592 . t   - current timestep
593 . U   - input vector (current ODE solution)
594 . A   - output matrix
595 - ctx - [optional] user-defined function context
596 
597   Level: beginner
598 
599   Note:
600   The deprecated `TSRHSJacobianP` still works as a replacement for `TSRHSJacobianPFn` *.
601 
602 .seealso: [](ch_ts), `TS`, `TSSetRHSJacobianP()`, `TSGetRHSJacobianP()`
603 S*/
604 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode TSRHSJacobianPFn(TS ts, PetscReal t, Vec U, Mat A, void *ctx);
605 
606 PETSC_EXTERN_TYPEDEF typedef TSRHSJacobianPFn *TSRHSJacobianP;
607 
608 PETSC_EXTERN PetscErrorCode TSSetRHSFunction(TS, Vec, TSRHSFunctionFn *, void *);
609 PETSC_EXTERN PetscErrorCode TSGetRHSFunction(TS, Vec *, TSRHSFunctionFn **, void **);
610 PETSC_EXTERN PetscErrorCode TSSetRHSJacobian(TS, Mat, Mat, TSRHSJacobianFn *, void *);
611 PETSC_EXTERN PetscErrorCode TSGetRHSJacobian(TS, Mat *, Mat *, TSRHSJacobianFn **, void **);
612 PETSC_EXTERN PetscErrorCode TSRHSJacobianSetReuse(TS, PetscBool);
613 
614 /*S
615   TSSolutionFn - A prototype of a `TS` solution evaluation function that would be passed to `TSSetSolutionFunction()`
616 
617   Calling Sequence:
618 + ts  - timestep context
619 . t   - current time
620 . u   - output vector
621 - ctx - [optional] user-defined function context
622 
623   Level: advanced
624 
625   Note:
626   The deprecated `TSSolutionFunction` still works as a replacement for `TSSolutionFn` *.
627 
628 .seealso: [](ch_ts), `TS`, `TSSetSolutionFunction()`, `DMTSSetSolutionFunction()`
629 S*/
630 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode TSSolutionFn(TS ts, PetscReal t, Vec u, void *ctx);
631 
632 PETSC_EXTERN_TYPEDEF typedef TSSolutionFn *TSSolutionFunction;
633 
634 PETSC_EXTERN PetscErrorCode TSSetSolutionFunction(TS, TSSolutionFn *, void *);
635 
636 /*S
637   TSForcingFn - A prototype of a `TS` forcing function evaluation function that would be passed to `TSSetForcingFunction()`
638 
639   Calling Sequence:
640 + ts  - timestep context
641 . t   - current time
642 . f   - output vector
643 - ctx - [optional] user-defined function context
644 
645   Level: advanced
646 
647   Note:
648   The deprecated `TSForcingFunction` still works as a replacement for `TSForcingFn` *.
649 
650 .seealso: [](ch_ts), `TS`, `TSSetForcingFunction()`, `DMTSSetForcingFunction()`
651 S*/
652 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode TSForcingFn(TS ts, PetscReal t, Vec f, void *ctx);
653 
654 PETSC_EXTERN_TYPEDEF typedef TSForcingFn *TSForcingFunction;
655 
656 PETSC_EXTERN PetscErrorCode TSSetForcingFunction(TS, TSForcingFn *, void *);
657 
658 /*S
659   TSIFunctionFn - A prototype of a `TS` implicit function evaluation function that would be passed to `TSSetIFunction()
660 
661   Calling Sequence:
662 + ts  - the `TS` context obtained from `TSCreate()`
663 . t   - time at step/stage being solved
664 . U   - state vector
665 . U_t - time derivative of state vector
666 . F   - function vector
667 - ctx - [optional] user-defined context for function
668 
669   Level: beginner
670 
671   Note:
672   The deprecated `TSIFunction` still works as a replacement for `TSIFunctionFn` *.
673 
674 .seealso: [](ch_ts), `TS`, `TSSetIFunction()`, `DMTSSetIFunction()`, `TSIJacobianFn`, `TSRHSFunctionFn`, `TSRHSJacobianFn`
675 S*/
676 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode TSIFunctionFn(TS ts, PetscReal t, Vec U, Vec U_t, Vec F, void *ctx);
677 
678 PETSC_EXTERN_TYPEDEF typedef TSIFunctionFn *TSIFunction;
679 
680 /*S
681   TSIJacobianFn - A prototype of a `TS` Jacobian evaluation function that would be passed to `TSSetIJacobian()`
682 
683   Calling Sequence:
684 + ts   - the `TS` context obtained from `TSCreate()`
685 . t    - time at step/stage being solved
686 . U    - state vector
687 . U_t  - time derivative of state vector
688 . a    - shift
689 . Amat - (approximate) Jacobian of F(t,U,W+a*U), equivalent to dF/dU + a*dF/dU_t
690 . Pmat - matrix used for constructing preconditioner, usually the same as `Amat`
691 - ctx  - [optional] user-defined context for Jacobian evaluation routine
692 
693   Level: beginner
694 
695   Note:
696   The deprecated `TSIJacobian` still works as a replacement for `TSIJacobianFn` *.
697 
698 .seealso: [](ch_ts), `TSSetIJacobian()`, `DMTSSetIJacobian()`, `TSIFunctionFn`, `TSRHSFunctionFn`, `TSRHSJacobianFn`
699 S*/
700 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode TSIJacobianFn(TS ts, PetscReal t, Vec U, Vec U_t, PetscReal a, Mat Amat, Mat Pmat, void *ctx);
701 
702 PETSC_EXTERN_TYPEDEF typedef TSIJacobianFn *TSIJacobian;
703 
704 PETSC_EXTERN PetscErrorCode TSSetIFunction(TS, Vec, TSIFunctionFn *, void *);
705 PETSC_EXTERN PetscErrorCode TSGetIFunction(TS, Vec *, TSIFunctionFn **, void **);
706 PETSC_EXTERN PetscErrorCode TSSetIJacobian(TS, Mat, Mat, TSIJacobianFn *, void *);
707 PETSC_EXTERN PetscErrorCode TSGetIJacobian(TS, Mat *, Mat *, TSIJacobianFn **, void **);
708 
709 /*S
710   TSI2FunctionFn - A prototype of a `TS` implicit function evaluation function for 2nd order systems that would be passed to `TSSetI2Function()`
711 
712   Calling Sequence:
713 + ts   - the `TS` context obtained from `TSCreate()`
714 . t    - time at step/stage being solved
715 . U    - state vector
716 . U_t  - time derivative of state vector
717 . U_tt - second time derivative of state vector
718 . F    - function vector
719 - ctx  - [optional] user-defined context for matrix evaluation routine (may be `NULL`)
720 
721   Level: advanced
722 
723   Note:
724   The deprecated `TSI2Function` still works as a replacement for `TSI2FunctionFn` *.
725 
726 .seealso: [](ch_ts), `TS`, `TSSetI2Function()`, `DMTSSetI2Function()`, `TSIFunctionFn`
727 S*/
728 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode TSI2FunctionFn(TS ts, PetscReal t, Vec U, Vec U_t, Vec U_tt, Vec F, void *ctx);
729 
730 PETSC_EXTERN_TYPEDEF typedef TSI2FunctionFn *TSI2Function;
731 
732 /*S
733   TSI2JacobianFn - A prototype of a `TS` implicit Jacobian evaluation function for 2nd order systems that would be passed to `TSSetI2Jacobian()`
734 
735   Calling Sequence:
736 + ts   - the `TS` context obtained from `TSCreate()`
737 . t    - time at step/stage being solved
738 . U    - state vector
739 . U_t  - time derivative of state vector
740 . U_tt - second time derivative of state vector
741 . v    - shift for U_t
742 . a    - shift for U_tt
743 . J    - Jacobian of G(U) = F(t,U,W+v*U,W'+a*U), equivalent to dF/dU + v*dF/dU_t  + a*dF/dU_tt
744 . jac  - matrix from which to construct the preconditioner, may be same as `J`
745 - ctx  - [optional] user-defined context for matrix evaluation routine
746 
747   Level: advanced
748 
749   Note:
750   The deprecated `TSI2Jacobian` still works as a replacement for `TSI2JacobianFn` *.
751 
752 .seealso: [](ch_ts), `TS`, `TSSetI2Jacobian()`, `DMTSSetI2Jacobian()`, `TSIFunctionFn`, `TSIJacobianFn`, `TSRHSFunctionFn`, `TSRHSJacobianFn`
753 S*/
754 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode TSI2JacobianFn(TS ts, PetscReal t, Vec U, Vec U_t, Vec U_tt, PetscReal v, PetscReal a, Mat J, Mat Jac, void *ctx);
755 
756 PETSC_EXTERN_TYPEDEF typedef TSI2JacobianFn *TSI2Jacobian;
757 
758 PETSC_EXTERN PetscErrorCode TSSetI2Function(TS, Vec, TSI2FunctionFn *, void *);
759 PETSC_EXTERN PetscErrorCode TSGetI2Function(TS, Vec *, TSI2FunctionFn **, void **);
760 PETSC_EXTERN PetscErrorCode TSSetI2Jacobian(TS, Mat, Mat, TSI2JacobianFn *, void *);
761 PETSC_EXTERN PetscErrorCode TSGetI2Jacobian(TS, Mat *, Mat *, TSI2JacobianFn **, void **);
762 
763 PETSC_EXTERN PetscErrorCode TSRHSSplitSetIS(TS, const char[], IS);
764 PETSC_EXTERN PetscErrorCode TSRHSSplitGetIS(TS, const char[], IS *);
765 PETSC_EXTERN PetscErrorCode TSRHSSplitSetRHSFunction(TS, const char[], Vec, TSRHSFunctionFn *, void *);
766 PETSC_EXTERN PetscErrorCode TSRHSSplitSetIFunction(TS, const char[], Vec, TSIFunctionFn *, void *);
767 PETSC_EXTERN PetscErrorCode TSRHSSplitSetIJacobian(TS, const char[], Mat, Mat, TSIJacobianFn *, void *);
768 PETSC_EXTERN PetscErrorCode TSRHSSplitGetSubTS(TS, const char[], TS *);
769 PETSC_EXTERN PetscErrorCode TSRHSSplitGetSubTSs(TS, PetscInt *, TS *[]);
770 PETSC_EXTERN PetscErrorCode TSSetUseSplitRHSFunction(TS, PetscBool);
771 PETSC_EXTERN PetscErrorCode TSGetUseSplitRHSFunction(TS, PetscBool *);
772 PETSC_EXTERN PetscErrorCode TSRHSSplitGetSNES(TS, SNES *);
773 PETSC_EXTERN PetscErrorCode TSRHSSplitSetSNES(TS, SNES);
774 
775 PETSC_EXTERN TSRHSFunctionFn TSComputeRHSFunctionLinear;
776 PETSC_EXTERN TSRHSJacobianFn TSComputeRHSJacobianConstant;
777 PETSC_EXTERN PetscErrorCode  TSComputeIFunctionLinear(TS, PetscReal, Vec, Vec, Vec, void *);
778 PETSC_EXTERN PetscErrorCode  TSComputeIJacobianConstant(TS, PetscReal, Vec, Vec, PetscReal, Mat, Mat, void *);
779 PETSC_EXTERN PetscErrorCode  TSComputeSolutionFunction(TS, PetscReal, Vec);
780 PETSC_EXTERN PetscErrorCode  TSComputeForcingFunction(TS, PetscReal, Vec);
781 PETSC_EXTERN PetscErrorCode  TSComputeIJacobianDefaultColor(TS, PetscReal, Vec, Vec, PetscReal, Mat, Mat, void *);
782 PETSC_EXTERN PetscErrorCode  TSPruneIJacobianColor(TS, Mat, Mat);
783 
784 PETSC_EXTERN PetscErrorCode TSSetPreStep(TS, PetscErrorCode (*)(TS));
785 PETSC_EXTERN PetscErrorCode TSSetPreStage(TS, PetscErrorCode (*)(TS, PetscReal));
786 PETSC_EXTERN PetscErrorCode TSSetPostStage(TS, PetscErrorCode (*)(TS, PetscReal, PetscInt, Vec *));
787 PETSC_EXTERN PetscErrorCode TSSetPostEvaluate(TS, PetscErrorCode (*)(TS));
788 PETSC_EXTERN PetscErrorCode TSSetPostStep(TS, PetscErrorCode (*)(TS));
789 PETSC_EXTERN PetscErrorCode TSSetResize(TS, PetscBool, PetscErrorCode (*)(TS, PetscInt, PetscReal, Vec, PetscBool *, void *), PetscErrorCode (*)(TS, PetscInt, Vec[], Vec[], void *), void *);
790 PETSC_EXTERN PetscErrorCode TSPreStep(TS);
791 PETSC_EXTERN PetscErrorCode TSPreStage(TS, PetscReal);
792 PETSC_EXTERN PetscErrorCode TSPostStage(TS, PetscReal, PetscInt, Vec[]);
793 PETSC_EXTERN PetscErrorCode TSPostEvaluate(TS);
794 PETSC_EXTERN PetscErrorCode TSPostStep(TS);
795 PETSC_EXTERN PetscErrorCode TSResize(TS);
796 PETSC_EXTERN PetscErrorCode TSResizeRetrieveVec(TS, const char *, Vec *);
797 PETSC_EXTERN PetscErrorCode TSResizeRegisterVec(TS, const char *, Vec);
798 PETSC_EXTERN PetscErrorCode TSGetStepResize(TS, PetscBool *);
799 
800 PETSC_EXTERN PetscErrorCode TSInterpolate(TS, PetscReal, Vec);
801 PETSC_EXTERN PetscErrorCode TSSetTolerances(TS, PetscReal, Vec, PetscReal, Vec);
802 PETSC_EXTERN PetscErrorCode TSGetTolerances(TS, PetscReal *, Vec *, PetscReal *, Vec *);
803 PETSC_EXTERN PetscErrorCode TSErrorWeightedNorm(TS, Vec, Vec, NormType, PetscReal *, PetscReal *, PetscReal *);
804 PETSC_EXTERN PetscErrorCode TSErrorWeightedENorm(TS, Vec, Vec, Vec, NormType, PetscReal *, PetscReal *, PetscReal *);
805 PETSC_EXTERN PetscErrorCode TSSetCFLTimeLocal(TS, PetscReal);
806 PETSC_EXTERN PetscErrorCode TSGetCFLTime(TS, PetscReal *);
807 PETSC_EXTERN PetscErrorCode TSSetFunctionDomainError(TS, PetscErrorCode (*)(TS, PetscReal, Vec, PetscBool *));
808 PETSC_EXTERN PetscErrorCode TSFunctionDomainError(TS, PetscReal, Vec, PetscBool *);
809 
810 PETSC_EXTERN PetscErrorCode TSPseudoSetTimeStep(TS, PetscErrorCode (*)(TS, PetscReal *, void *), void *);
811 PETSC_EXTERN PetscErrorCode TSPseudoTimeStepDefault(TS, PetscReal *, void *);
812 PETSC_EXTERN PetscErrorCode TSPseudoComputeTimeStep(TS, PetscReal *);
813 PETSC_EXTERN PetscErrorCode TSPseudoSetMaxTimeStep(TS, PetscReal);
814 PETSC_EXTERN PetscErrorCode TSPseudoSetVerifyTimeStep(TS, PetscErrorCode (*)(TS, Vec, void *, PetscReal *, PetscBool *), void *);
815 PETSC_EXTERN PetscErrorCode TSPseudoVerifyTimeStepDefault(TS, Vec, void *, PetscReal *, PetscBool *);
816 PETSC_EXTERN PetscErrorCode TSPseudoVerifyTimeStep(TS, Vec, PetscReal *, PetscBool *);
817 PETSC_EXTERN PetscErrorCode TSPseudoSetTimeStepIncrement(TS, PetscReal);
818 PETSC_EXTERN PetscErrorCode TSPseudoIncrementDtFromInitialDt(TS);
819 PETSC_EXTERN PetscErrorCode TSPseudoComputeFunction(TS, Vec, Vec *, PetscReal *);
820 
821 PETSC_EXTERN PetscErrorCode TSPythonSetType(TS, const char[]);
822 PETSC_EXTERN PetscErrorCode TSPythonGetType(TS, const char *[]);
823 
824 PETSC_EXTERN PetscErrorCode TSComputeRHSFunction(TS, PetscReal, Vec, Vec);
825 PETSC_EXTERN PetscErrorCode TSComputeRHSJacobian(TS, PetscReal, Vec, Mat, Mat);
826 PETSC_EXTERN PetscErrorCode TSComputeIFunction(TS, PetscReal, Vec, Vec, Vec, PetscBool);
827 PETSC_EXTERN PetscErrorCode TSComputeIJacobian(TS, PetscReal, Vec, Vec, PetscReal, Mat, Mat, PetscBool);
828 PETSC_EXTERN PetscErrorCode TSComputeI2Function(TS, PetscReal, Vec, Vec, Vec, Vec);
829 PETSC_EXTERN PetscErrorCode TSComputeI2Jacobian(TS, PetscReal, Vec, Vec, Vec, PetscReal, PetscReal, Mat, Mat);
830 PETSC_EXTERN PetscErrorCode TSComputeLinearStability(TS, PetscReal, PetscReal, PetscReal *, PetscReal *);
831 
832 PETSC_EXTERN PetscErrorCode TSVISetVariableBounds(TS, Vec, Vec);
833 
834 PETSC_EXTERN PetscErrorCode DMTSSetBoundaryLocal(DM, PetscErrorCode (*)(DM, PetscReal, Vec, Vec, void *), void *);
835 PETSC_EXTERN PetscErrorCode DMTSSetRHSFunction(DM, TSRHSFunctionFn *, void *);
836 PETSC_EXTERN PetscErrorCode DMTSGetRHSFunction(DM, TSRHSFunctionFn **, void **);
837 PETSC_EXTERN PetscErrorCode DMTSSetRHSFunctionContextDestroy(DM, PetscCtxDestroyFn *);
838 PETSC_EXTERN PetscErrorCode DMTSSetRHSJacobian(DM, TSRHSJacobianFn *, void *);
839 PETSC_EXTERN PetscErrorCode DMTSGetRHSJacobian(DM, TSRHSJacobianFn **, void **);
840 PETSC_EXTERN PetscErrorCode DMTSSetRHSJacobianContextDestroy(DM, PetscCtxDestroyFn *);
841 PETSC_EXTERN PetscErrorCode DMTSSetIFunction(DM, TSIFunctionFn *, void *);
842 PETSC_EXTERN PetscErrorCode DMTSGetIFunction(DM, TSIFunctionFn **, void **);
843 PETSC_EXTERN PetscErrorCode DMTSSetIFunctionContextDestroy(DM, PetscCtxDestroyFn *);
844 PETSC_EXTERN PetscErrorCode DMTSSetIJacobian(DM, TSIJacobianFn *, void *);
845 PETSC_EXTERN PetscErrorCode DMTSGetIJacobian(DM, TSIJacobianFn **, void **);
846 PETSC_EXTERN PetscErrorCode DMTSSetIJacobianContextDestroy(DM, PetscCtxDestroyFn *);
847 PETSC_EXTERN PetscErrorCode DMTSSetI2Function(DM, TSI2FunctionFn *, void *);
848 PETSC_EXTERN PetscErrorCode DMTSGetI2Function(DM, TSI2FunctionFn **, void **);
849 PETSC_EXTERN PetscErrorCode DMTSSetI2FunctionContextDestroy(DM, PetscCtxDestroyFn *);
850 PETSC_EXTERN PetscErrorCode DMTSSetI2Jacobian(DM, TSI2JacobianFn *, void *);
851 PETSC_EXTERN PetscErrorCode DMTSGetI2Jacobian(DM, TSI2JacobianFn **, void **);
852 PETSC_EXTERN PetscErrorCode DMTSSetI2JacobianContextDestroy(DM, PetscCtxDestroyFn *);
853 
854 /*S
855   TSTransientVariableFn - A prototype of a function to transform from state to transient variables that would be passed to `TSSetTransientVariable()`
856 
857   Calling Sequence:
858 + ts  - timestep context
859 . p   - input vector (primitive form)
860 . c   - output vector, transient variables (conservative form)
861 - ctx - [optional] user-defined function context
862 
863   Level: advanced
864 
865   Note:
866   The deprecated `TSTransientVariable` still works as a replacement for `TSTransientVariableFn` *.
867 
868 .seealso: [](ch_ts), `TS`, `TSSetTransientVariable()`, `DMTSSetTransientVariable()`
869 S*/
870 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode TSTransientVariableFn(TS ts, Vec p, Vec c, void *ctx);
871 
872 PETSC_EXTERN_TYPEDEF typedef TSTransientVariableFn *TSTransientVariable;
873 
874 PETSC_EXTERN PetscErrorCode TSSetTransientVariable(TS, TSTransientVariableFn *, void *);
875 PETSC_EXTERN PetscErrorCode DMTSSetTransientVariable(DM, TSTransientVariableFn *, void *);
876 PETSC_EXTERN PetscErrorCode DMTSGetTransientVariable(DM, TSTransientVariableFn **, void *);
877 PETSC_EXTERN PetscErrorCode TSComputeTransientVariable(TS, Vec, Vec);
878 PETSC_EXTERN PetscErrorCode TSHasTransientVariable(TS, PetscBool *);
879 
880 PETSC_EXTERN PetscErrorCode DMTSSetSolutionFunction(DM, TSSolutionFn *, void *);
881 PETSC_EXTERN PetscErrorCode DMTSGetSolutionFunction(DM, TSSolutionFn **, void **);
882 PETSC_EXTERN PetscErrorCode DMTSSetForcingFunction(DM, TSForcingFn *, void *);
883 PETSC_EXTERN PetscErrorCode DMTSGetForcingFunction(DM, TSForcingFn **, void **);
884 PETSC_EXTERN PetscErrorCode DMTSCheckResidual(TS, DM, PetscReal, Vec, Vec, PetscReal, PetscReal *);
885 PETSC_EXTERN PetscErrorCode DMTSCheckJacobian(TS, DM, PetscReal, Vec, Vec, PetscReal, PetscBool *, PetscReal *);
886 PETSC_EXTERN PetscErrorCode DMTSCheckFromOptions(TS, Vec);
887 
888 PETSC_EXTERN PetscErrorCode DMTSGetIFunctionLocal(DM, PetscErrorCode (**)(DM, PetscReal, Vec, Vec, Vec, void *), void **);
889 PETSC_EXTERN PetscErrorCode DMTSSetIFunctionLocal(DM, PetscErrorCode (*)(DM, PetscReal, Vec, Vec, Vec, void *), void *);
890 PETSC_EXTERN PetscErrorCode DMTSGetIJacobianLocal(DM, PetscErrorCode (**)(DM, PetscReal, Vec, Vec, PetscReal, Mat, Mat, void *), void **);
891 PETSC_EXTERN PetscErrorCode DMTSSetIJacobianLocal(DM, PetscErrorCode (*)(DM, PetscReal, Vec, Vec, PetscReal, Mat, Mat, void *), void *);
892 PETSC_EXTERN PetscErrorCode DMTSGetRHSFunctionLocal(DM, PetscErrorCode (**)(DM, PetscReal, Vec, Vec, void *), void **);
893 PETSC_EXTERN PetscErrorCode DMTSSetRHSFunctionLocal(DM, PetscErrorCode (*)(DM, PetscReal, Vec, Vec, void *), void *);
894 PETSC_EXTERN PetscErrorCode DMTSCreateRHSMassMatrix(DM);
895 PETSC_EXTERN PetscErrorCode DMTSCreateRHSMassMatrixLumped(DM);
896 PETSC_EXTERN PetscErrorCode DMTSDestroyRHSMassMatrix(DM);
897 
898 PETSC_EXTERN PetscErrorCode DMTSSetIFunctionSerialize(DM, PetscErrorCode (*)(void *, PetscViewer), PetscErrorCode (*)(void **, PetscViewer));
899 PETSC_EXTERN PetscErrorCode DMTSSetIJacobianSerialize(DM, PetscErrorCode (*)(void *, PetscViewer), PetscErrorCode (*)(void **, PetscViewer));
900 
901 /*S
902   DMDATSRHSFunctionLocalFn - A prototype of a local `TS` right-hand side residual evaluation function for use with `DMDA` that would be passed to `DMDATSSetRHSFunctionLocal()`
903 
904   Calling Sequence:
905 + info - defines the subdomain to evaluate the residual on
906 . t    - time at which to evaluate residual
907 . x    - array of local state information
908 . f    - output array of local residual information
909 - ctx  - optional user context
910 
911   Level: beginner
912 
913   Note:
914   The deprecated `DMDATSRHSFunctionLocal` still works as a replacement for `DMDATSRHSFunctionLocalFn` *.
915 
916 .seealso: `DMDA`, `DMDATSSetRHSFunctionLocal()`, `TSRHSFunctionFn`, `DMDATSRHSJacobianLocalFn`, `DMDATSIJacobianLocalFn`, `DMDATSIFunctionLocalFn`
917 S*/
918 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode DMDATSRHSFunctionLocalFn(DMDALocalInfo *info, PetscReal t, void *x, void *f, void *ctx);
919 
920 PETSC_EXTERN_TYPEDEF typedef DMDATSRHSFunctionLocalFn *DMDATSRHSFunctionLocal;
921 
922 /*S
923   DMDATSRHSJacobianLocalFn - A prototype of a local residual evaluation function for use with `DMDA` that would be passed to `DMDATSSetRHSJacobianLocal()`
924 
925   Calling Sequence:
926 + info - defines the subdomain to evaluate the residual on
927 . t    - time at which to evaluate residual
928 . x    - array of local state information
929 . J    - Jacobian matrix
930 . B    - matrix from which to construct the preconditioner; often same as `J`
931 - ctx  - optional context
932 
933   Level: beginner
934 
935   Note:
936   The deprecated `DMDATSRHSJacobianLocal` still works as a replacement for `DMDATSRHSJacobianLocalFn` *.
937 
938 .seealso: `DMDA`, `DMDATSSetRHSJacobianLocal()`, `TSRHSJacobianFn`, `DMDATSRHSFunctionLocalFn`, `DMDATSIJacobianLocalFn`, `DMDATSIFunctionLocalFn`
939 S*/
940 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode DMDATSRHSJacobianLocalFn(DMDALocalInfo *info, PetscReal t, void *x, Mat J, Mat B, void *ctx);
941 
942 PETSC_EXTERN_TYPEDEF typedef DMDATSRHSJacobianLocalFn *DMDATSRHSJacobianLocal;
943 
944 /*S
945   DMDATSIFunctionLocalFn - A prototype of a local residual evaluation function for use with `DMDA` that would be passed to `DMDATSSetIFunctionLocal()`
946 
947   Calling Sequence:
948 + info  - defines the subdomain to evaluate the residual on
949 . t     - time at which to evaluate residual
950 . x     - array of local state information
951 . xdot  - array of local time derivative information
952 . imode - output array of local function evaluation information
953 - ctx   - optional context
954 
955   Level: beginner
956 
957   Note:
958   The deprecated `DMDATSIFunctionLocal` still works as a replacement for `DMDATSIFunctionLocalFn` *.
959 
960 .seealso: `DMDA`, `DMDATSSetIFunctionLocal()`, `DMDATSIJacobianLocalFn`, `TSIFunctionFn`
961 S*/
962 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode DMDATSIFunctionLocalFn(DMDALocalInfo *info, PetscReal t, void *x, void *xdot, void *imode, void *ctx);
963 
964 PETSC_EXTERN_TYPEDEF typedef DMDATSIFunctionLocalFn *DMDATSIFunctionLocal;
965 
966 /*S
967   DMDATSIJacobianLocalFn - A prototype of a local residual evaluation function for use with `DMDA` that would be passed to `DMDATSSetIJacobianLocal()`
968 
969   Calling Sequence:
970 + info  - defines the subdomain to evaluate the residual on
971 . t     - time at which to evaluate the jacobian
972 . x     - array of local state information
973 . xdot  - time derivative at this state
974 . shift - see `TSSetIJacobian()` for the meaning of this parameter
975 . J     - Jacobian matrix
976 . B     - matrix from which to construct the preconditioner; often same as `J`
977 - ctx   - optional context
978 
979   Level: beginner
980 
981   Note:
982   The deprecated `DMDATSIJacobianLocal` still works as a replacement for `DMDATSIJacobianLocalFn` *.
983 
984 .seealso: `DMDA` `DMDATSSetIJacobianLocal()`, `TSIJacobianFn`, `DMDATSIFunctionLocalFn`, `DMDATSRHSFunctionLocalFn`,  `DMDATSRHSJacobianlocal()`
985 S*/
986 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode DMDATSIJacobianLocalFn(DMDALocalInfo *info, PetscReal t, void *x, void *xdot, PetscReal shift, Mat J, Mat B, void *ctx);
987 
988 PETSC_EXTERN_TYPEDEF typedef DMDATSIJacobianLocalFn *DMDATSIJacobianLocal;
989 
990 PETSC_EXTERN PetscErrorCode DMDATSSetRHSFunctionLocal(DM, InsertMode, DMDATSRHSFunctionLocalFn *, void *);
991 PETSC_EXTERN PetscErrorCode DMDATSSetRHSJacobianLocal(DM, DMDATSRHSJacobianLocalFn *, void *);
992 PETSC_EXTERN PetscErrorCode DMDATSSetIFunctionLocal(DM, InsertMode, DMDATSIFunctionLocalFn *, void *);
993 PETSC_EXTERN PetscErrorCode DMDATSSetIJacobianLocal(DM, DMDATSIJacobianLocalFn *, void *);
994 
995 typedef struct _n_TSMonitorLGCtx *TSMonitorLGCtx;
996 typedef struct {
997   Vec            ray;
998   VecScatter     scatter;
999   PetscViewer    viewer;
1000   TSMonitorLGCtx lgctx;
1001 } TSMonitorDMDARayCtx;
1002 PETSC_EXTERN PetscErrorCode TSMonitorDMDARayDestroy(void **);
1003 PETSC_EXTERN PetscErrorCode TSMonitorDMDARay(TS, PetscInt, PetscReal, Vec, void *);
1004 PETSC_EXTERN PetscErrorCode TSMonitorLGDMDARay(TS, PetscInt, PetscReal, Vec, void *);
1005 
1006 /* Dynamic creation and loading functions */
1007 PETSC_EXTERN PetscFunctionList TSList;
1008 PETSC_EXTERN PetscErrorCode    TSGetType(TS, TSType *);
1009 PETSC_EXTERN PetscErrorCode    TSSetType(TS, TSType);
1010 PETSC_EXTERN PetscErrorCode    TSRegister(const char[], PetscErrorCode (*)(TS));
1011 
1012 PETSC_EXTERN PetscErrorCode TSGetSNES(TS, SNES *);
1013 PETSC_EXTERN PetscErrorCode TSSetSNES(TS, SNES);
1014 PETSC_EXTERN PetscErrorCode TSGetKSP(TS, KSP *);
1015 
1016 PETSC_EXTERN PetscErrorCode TSView(TS, PetscViewer);
1017 PETSC_EXTERN PetscErrorCode TSLoad(TS, PetscViewer);
1018 PETSC_EXTERN PetscErrorCode TSViewFromOptions(TS, PetscObject, const char[]);
1019 PETSC_EXTERN PetscErrorCode TSTrajectoryViewFromOptions(TSTrajectory, PetscObject, const char[]);
1020 
1021 #define TS_FILE_CLASSID 1211225
1022 
1023 PETSC_EXTERN PetscErrorCode TSSetApplicationContext(TS, void *);
1024 PETSC_EXTERN PetscErrorCode TSGetApplicationContext(TS, void *);
1025 
1026 PETSC_EXTERN PetscErrorCode TSMonitorLGCtxCreate(MPI_Comm, const char[], const char[], int, int, int, int, PetscInt, TSMonitorLGCtx *);
1027 PETSC_EXTERN PetscErrorCode TSMonitorLGCtxDestroy(TSMonitorLGCtx *);
1028 PETSC_EXTERN PetscErrorCode TSMonitorLGTimeStep(TS, PetscInt, PetscReal, Vec, void *);
1029 PETSC_EXTERN PetscErrorCode TSMonitorLGSolution(TS, PetscInt, PetscReal, Vec, void *);
1030 PETSC_EXTERN PetscErrorCode TSMonitorLGSetVariableNames(TS, const char *const *);
1031 PETSC_EXTERN PetscErrorCode TSMonitorLGGetVariableNames(TS, const char *const **);
1032 PETSC_EXTERN PetscErrorCode TSMonitorLGCtxSetVariableNames(TSMonitorLGCtx, const char *const *);
1033 PETSC_EXTERN PetscErrorCode TSMonitorLGSetDisplayVariables(TS, const char *const *);
1034 PETSC_EXTERN PetscErrorCode TSMonitorLGCtxSetDisplayVariables(TSMonitorLGCtx, const char *const *);
1035 PETSC_EXTERN PetscErrorCode TSMonitorLGSetTransform(TS, PetscErrorCode (*)(void *, Vec, Vec *), PetscCtxDestroyFn *, void *);
1036 PETSC_EXTERN PetscErrorCode TSMonitorLGCtxSetTransform(TSMonitorLGCtx, PetscErrorCode (*)(void *, Vec, Vec *), PetscCtxDestroyFn *, void *);
1037 PETSC_EXTERN PetscErrorCode TSMonitorLGError(TS, PetscInt, PetscReal, Vec, void *);
1038 PETSC_EXTERN PetscErrorCode TSMonitorLGSNESIterations(TS, PetscInt, PetscReal, Vec, void *);
1039 PETSC_EXTERN PetscErrorCode TSMonitorLGKSPIterations(TS, PetscInt, PetscReal, Vec, void *);
1040 PETSC_EXTERN PetscErrorCode TSMonitorError(TS, PetscInt, PetscReal, Vec, PetscViewerAndFormat *);
1041 PETSC_EXTERN PetscErrorCode TSDMSwarmMonitorMoments(TS, PetscInt, PetscReal, Vec, PetscViewerAndFormat *);
1042 
1043 struct _n_TSMonitorLGCtxNetwork {
1044   PetscInt     nlg;
1045   PetscDrawLG *lg;
1046   PetscBool    semilogy;
1047   PetscInt     howoften; /* when > 0 uses step % howoften, when negative only final solution plotted */
1048 };
1049 typedef struct _n_TSMonitorLGCtxNetwork *TSMonitorLGCtxNetwork;
1050 PETSC_EXTERN PetscErrorCode              TSMonitorLGCtxNetworkDestroy(TSMonitorLGCtxNetwork *);
1051 PETSC_EXTERN PetscErrorCode              TSMonitorLGCtxNetworkCreate(TS, const char[], const char[], int, int, int, int, PetscInt, TSMonitorLGCtxNetwork *);
1052 PETSC_EXTERN PetscErrorCode              TSMonitorLGCtxNetworkSolution(TS, PetscInt, PetscReal, Vec, void *);
1053 
1054 typedef struct _n_TSMonitorEnvelopeCtx *TSMonitorEnvelopeCtx;
1055 PETSC_EXTERN PetscErrorCode             TSMonitorEnvelopeCtxCreate(TS, TSMonitorEnvelopeCtx *);
1056 PETSC_EXTERN PetscErrorCode             TSMonitorEnvelope(TS, PetscInt, PetscReal, Vec, void *);
1057 PETSC_EXTERN PetscErrorCode             TSMonitorEnvelopeGetBounds(TS, Vec *, Vec *);
1058 PETSC_EXTERN PetscErrorCode             TSMonitorEnvelopeCtxDestroy(TSMonitorEnvelopeCtx *);
1059 
1060 typedef struct _n_TSMonitorSPEigCtx *TSMonitorSPEigCtx;
1061 PETSC_EXTERN PetscErrorCode          TSMonitorSPEigCtxCreate(MPI_Comm, const char[], const char[], int, int, int, int, PetscInt, TSMonitorSPEigCtx *);
1062 PETSC_EXTERN PetscErrorCode          TSMonitorSPEigCtxDestroy(TSMonitorSPEigCtx *);
1063 PETSC_EXTERN PetscErrorCode          TSMonitorSPEig(TS, PetscInt, PetscReal, Vec, void *);
1064 
1065 typedef struct _n_TSMonitorSPCtx *TSMonitorSPCtx;
1066 PETSC_EXTERN PetscErrorCode       TSMonitorSPCtxCreate(MPI_Comm, const char[], const char[], int, int, int, int, PetscInt, PetscInt, PetscBool, PetscBool, TSMonitorSPCtx *);
1067 PETSC_EXTERN PetscErrorCode       TSMonitorSPCtxDestroy(TSMonitorSPCtx *);
1068 PETSC_EXTERN PetscErrorCode       TSMonitorSPSwarmSolution(TS, PetscInt, PetscReal, Vec, void *);
1069 
1070 typedef struct _n_TSMonitorHGCtx *TSMonitorHGCtx;
1071 PETSC_EXTERN PetscErrorCode       TSMonitorHGCtxCreate(MPI_Comm, const char[], const char[], int, int, int, int, PetscInt, PetscInt, PetscInt, PetscBool, TSMonitorHGCtx *);
1072 PETSC_EXTERN PetscErrorCode       TSMonitorHGSwarmSolution(TS, PetscInt, PetscReal, Vec, void *);
1073 PETSC_EXTERN PetscErrorCode       TSMonitorHGCtxDestroy(TSMonitorHGCtx *);
1074 PETSC_EXTERN PetscErrorCode       TSMonitorHGSwarmSolution(TS, PetscInt, PetscReal, Vec, void *);
1075 
1076 PETSC_EXTERN PetscErrorCode TSSetEventHandler(TS, PetscInt, PetscInt[], PetscBool[], PetscErrorCode (*)(TS, PetscReal, Vec, PetscReal[], void *), PetscErrorCode (*)(TS, PetscInt, PetscInt[], PetscReal, Vec, PetscBool, void *), void *);
1077 PETSC_EXTERN PetscErrorCode TSSetPostEventStep(TS, PetscReal);
1078 PETSC_EXTERN PetscErrorCode TSSetPostEventSecondStep(TS, PetscReal);
1079 PETSC_DEPRECATED_FUNCTION(3, 21, 0, "TSSetPostEventSecondStep()", ) static inline PetscErrorCode TSSetPostEventIntervalStep(TS ts, PetscReal dt)
1080 {
1081   return TSSetPostEventSecondStep(ts, dt);
1082 }
1083 PETSC_EXTERN PetscErrorCode TSSetEventTolerances(TS, PetscReal, PetscReal[]);
1084 PETSC_EXTERN PetscErrorCode TSGetNumEvents(TS, PetscInt *);
1085 
1086 /*J
1087    TSSSPType - string with the name of a `TSSSP` scheme.
1088 
1089    Level: beginner
1090 
1091 .seealso: [](ch_ts), `TSSSPSetType()`, `TS`, `TSSSP`
1092 J*/
1093 typedef const char *TSSSPType;
1094 #define TSSSPRKS2  "rks2"
1095 #define TSSSPRKS3  "rks3"
1096 #define TSSSPRK104 "rk104"
1097 
1098 PETSC_EXTERN PetscErrorCode    TSSSPSetType(TS, TSSSPType);
1099 PETSC_EXTERN PetscErrorCode    TSSSPGetType(TS, TSSSPType *);
1100 PETSC_EXTERN PetscErrorCode    TSSSPSetNumStages(TS, PetscInt);
1101 PETSC_EXTERN PetscErrorCode    TSSSPGetNumStages(TS, PetscInt *);
1102 PETSC_EXTERN PetscErrorCode    TSSSPInitializePackage(void);
1103 PETSC_EXTERN PetscErrorCode    TSSSPFinalizePackage(void);
1104 PETSC_EXTERN PetscFunctionList TSSSPList;
1105 
1106 /*S
1107    TSAdapt - Abstract object that manages time-step adaptivity
1108 
1109    Level: beginner
1110 
1111 .seealso: [](ch_ts), `TS`, `TSGetAdapt()`, `TSAdaptCreate()`, `TSAdaptType`
1112 S*/
1113 typedef struct _p_TSAdapt *TSAdapt;
1114 
1115 /*J
1116    TSAdaptType - String with the name of `TSAdapt` scheme.
1117 
1118    Level: beginner
1119 
1120 .seealso: [](ch_ts), `TSGetAdapt()`, `TSAdaptSetType()`, `TS`, `TSAdapt`
1121 J*/
1122 typedef const char *TSAdaptType;
1123 #define TSADAPTNONE    "none"
1124 #define TSADAPTBASIC   "basic"
1125 #define TSADAPTDSP     "dsp"
1126 #define TSADAPTCFL     "cfl"
1127 #define TSADAPTGLEE    "glee"
1128 #define TSADAPTHISTORY "history"
1129 
1130 PETSC_EXTERN PetscErrorCode TSGetAdapt(TS, TSAdapt *);
1131 PETSC_EXTERN PetscErrorCode TSAdaptRegister(const char[], PetscErrorCode (*)(TSAdapt));
1132 PETSC_EXTERN PetscErrorCode TSAdaptInitializePackage(void);
1133 PETSC_EXTERN PetscErrorCode TSAdaptFinalizePackage(void);
1134 PETSC_EXTERN PetscErrorCode TSAdaptCreate(MPI_Comm, TSAdapt *);
1135 PETSC_EXTERN PetscErrorCode TSAdaptSetType(TSAdapt, TSAdaptType);
1136 PETSC_EXTERN PetscErrorCode TSAdaptGetType(TSAdapt, TSAdaptType *);
1137 PETSC_EXTERN PetscErrorCode TSAdaptSetOptionsPrefix(TSAdapt, const char[]);
1138 PETSC_EXTERN PetscErrorCode TSAdaptCandidatesClear(TSAdapt);
1139 PETSC_EXTERN PetscErrorCode TSAdaptCandidateAdd(TSAdapt, const char[], PetscInt, PetscInt, PetscReal, PetscReal, PetscBool);
1140 PETSC_EXTERN PetscErrorCode TSAdaptCandidatesGet(TSAdapt, PetscInt *, const PetscInt **, const PetscInt **, const PetscReal **, const PetscReal **);
1141 PETSC_EXTERN PetscErrorCode TSAdaptChoose(TSAdapt, TS, PetscReal, PetscInt *, PetscReal *, PetscBool *);
1142 PETSC_EXTERN PetscErrorCode TSAdaptCheckStage(TSAdapt, TS, PetscReal, Vec, PetscBool *);
1143 PETSC_EXTERN PetscErrorCode TSAdaptView(TSAdapt, PetscViewer);
1144 PETSC_EXTERN PetscErrorCode TSAdaptLoad(TSAdapt, PetscViewer);
1145 PETSC_EXTERN PetscErrorCode TSAdaptSetFromOptions(TSAdapt, PetscOptionItems);
1146 PETSC_EXTERN PetscErrorCode TSAdaptReset(TSAdapt);
1147 PETSC_EXTERN PetscErrorCode TSAdaptDestroy(TSAdapt *);
1148 PETSC_EXTERN PetscErrorCode TSAdaptSetMonitor(TSAdapt, PetscBool);
1149 PETSC_EXTERN PetscErrorCode TSAdaptSetAlwaysAccept(TSAdapt, PetscBool);
1150 PETSC_EXTERN PetscErrorCode TSAdaptSetSafety(TSAdapt, PetscReal, PetscReal);
1151 PETSC_EXTERN PetscErrorCode TSAdaptGetSafety(TSAdapt, PetscReal *, PetscReal *);
1152 PETSC_EXTERN PetscErrorCode TSAdaptSetMaxIgnore(TSAdapt, PetscReal);
1153 PETSC_EXTERN PetscErrorCode TSAdaptGetMaxIgnore(TSAdapt, PetscReal *);
1154 PETSC_EXTERN PetscErrorCode TSAdaptSetClip(TSAdapt, PetscReal, PetscReal);
1155 PETSC_EXTERN PetscErrorCode TSAdaptGetClip(TSAdapt, PetscReal *, PetscReal *);
1156 PETSC_EXTERN PetscErrorCode TSAdaptSetScaleSolveFailed(TSAdapt, PetscReal);
1157 PETSC_EXTERN PetscErrorCode TSAdaptGetScaleSolveFailed(TSAdapt, PetscReal *);
1158 PETSC_EXTERN PetscErrorCode TSAdaptSetStepLimits(TSAdapt, PetscReal, PetscReal);
1159 PETSC_EXTERN PetscErrorCode TSAdaptGetStepLimits(TSAdapt, PetscReal *, PetscReal *);
1160 PETSC_EXTERN PetscErrorCode TSAdaptSetCheckStage(TSAdapt, PetscErrorCode (*)(TSAdapt, TS, PetscReal, Vec, PetscBool *));
1161 PETSC_EXTERN PetscErrorCode TSAdaptHistorySetHistory(TSAdapt, PetscInt, PetscReal[], PetscBool);
1162 PETSC_EXTERN PetscErrorCode TSAdaptHistorySetTrajectory(TSAdapt, TSTrajectory, PetscBool);
1163 PETSC_EXTERN PetscErrorCode TSAdaptHistoryGetStep(TSAdapt, PetscInt, PetscReal *, PetscReal *);
1164 PETSC_EXTERN PetscErrorCode TSAdaptSetTimeStepIncreaseDelay(TSAdapt, PetscInt);
1165 PETSC_EXTERN PetscErrorCode TSAdaptDSPSetFilter(TSAdapt, const char *);
1166 PETSC_EXTERN PetscErrorCode TSAdaptDSPSetPID(TSAdapt, PetscReal, PetscReal, PetscReal);
1167 
1168 /*S
1169    TSGLLEAdapt - Abstract object that manages time-step adaptivity for `TSGLLE`
1170 
1171    Level: beginner
1172 
1173    Developer Note:
1174    This functionality should be replaced by the `TSAdapt`.
1175 
1176 .seealso: [](ch_ts), `TS`, `TSGLLE`, `TSGLLEAdaptCreate()`, `TSGLLEAdaptType`
1177 S*/
1178 typedef struct _p_TSGLLEAdapt *TSGLLEAdapt;
1179 
1180 /*J
1181    TSGLLEAdaptType - String with the name of `TSGLLEAdapt` scheme
1182 
1183    Level: beginner
1184 
1185    Developer Note:
1186    This functionality should be replaced by the `TSAdaptType`.
1187 
1188 .seealso: [](ch_ts), `TSGLLEAdaptSetType()`, `TS`
1189 J*/
1190 typedef const char *TSGLLEAdaptType;
1191 #define TSGLLEADAPT_NONE "none"
1192 #define TSGLLEADAPT_SIZE "size"
1193 #define TSGLLEADAPT_BOTH "both"
1194 
1195 PETSC_EXTERN PetscErrorCode TSGLLEAdaptRegister(const char[], PetscErrorCode (*)(TSGLLEAdapt));
1196 PETSC_EXTERN PetscErrorCode TSGLLEAdaptInitializePackage(void);
1197 PETSC_EXTERN PetscErrorCode TSGLLEAdaptFinalizePackage(void);
1198 PETSC_EXTERN PetscErrorCode TSGLLEAdaptCreate(MPI_Comm, TSGLLEAdapt *);
1199 PETSC_EXTERN PetscErrorCode TSGLLEAdaptSetType(TSGLLEAdapt, TSGLLEAdaptType);
1200 PETSC_EXTERN PetscErrorCode TSGLLEAdaptSetOptionsPrefix(TSGLLEAdapt, const char[]);
1201 PETSC_EXTERN PetscErrorCode TSGLLEAdaptChoose(TSGLLEAdapt, PetscInt, const PetscInt[], const PetscReal[], const PetscReal[], PetscInt, PetscReal, PetscReal, PetscInt *, PetscReal *, PetscBool *);
1202 PETSC_EXTERN PetscErrorCode TSGLLEAdaptView(TSGLLEAdapt, PetscViewer);
1203 PETSC_EXTERN PetscErrorCode TSGLLEAdaptSetFromOptions(TSGLLEAdapt, PetscOptionItems);
1204 PETSC_EXTERN PetscErrorCode TSGLLEAdaptDestroy(TSGLLEAdapt *);
1205 
1206 /*J
1207    TSGLLEAcceptType - String with the name of `TSGLLEAccept` scheme
1208 
1209    Level: beginner
1210 
1211 .seealso: [](ch_ts), `TSGLLESetAcceptType()`, `TS`, `TSGLLEAccept`
1212 J*/
1213 typedef const char *TSGLLEAcceptType;
1214 #define TSGLLEACCEPT_ALWAYS "always"
1215 
1216 /*S
1217   TSGLLEAcceptFn - A prototype of a `TS` accept function that would be passed to `TSGLLEAcceptRegister()`
1218 
1219   Calling Sequence:
1220 + ts  - timestep context
1221 . nt - time to end of solution time
1222 . h - the proposed step-size
1223 . enorm - unknown
1224 - accept - output, if the proposal is accepted
1225 
1226   Level: beginner
1227 
1228   Note:
1229   The deprecated `TSGLLEAcceptFunction` still works as a replacement for `TSGLLEAcceptFn` *
1230 
1231 .seealso: [](ch_ts), `TS`, `TSSetRHSFunction()`, `DMTSSetRHSFunction()`, `TSIFunctionFn`,
1232 `TSIJacobianFn`, `TSRHSJacobianFn`, `TSGLLEAcceptRegister()`
1233 S*/
1234 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode(TSGLLEAcceptFn)(TS ts, PetscReal nt, PetscReal h, const PetscReal enorm[], PetscBool *accept);
1235 
1236 PETSC_EXTERN_TYPEDEF typedef TSGLLEAcceptFn *TSGLLEAcceptFunction;
1237 
1238 PETSC_EXTERN PetscErrorCode TSGLLEAcceptRegister(const char[], TSGLLEAcceptFn *);
1239 
1240 /*J
1241   TSGLLEType - string with the name of a General Linear `TSGLLE` type
1242 
1243   Level: beginner
1244 
1245 .seealso: [](ch_ts), `TS`, `TSGLLE`, `TSGLLESetType()`, `TSGLLERegister()`, `TSGLLEAccept`
1246 J*/
1247 typedef const char *TSGLLEType;
1248 #define TSGLLE_IRKS "irks"
1249 
1250 PETSC_EXTERN PetscErrorCode TSGLLERegister(const char[], PetscErrorCode (*)(TS));
1251 PETSC_EXTERN PetscErrorCode TSGLLEInitializePackage(void);
1252 PETSC_EXTERN PetscErrorCode TSGLLEFinalizePackage(void);
1253 PETSC_EXTERN PetscErrorCode TSGLLESetType(TS, TSGLLEType);
1254 PETSC_EXTERN PetscErrorCode TSGLLEGetAdapt(TS, TSGLLEAdapt *);
1255 PETSC_EXTERN PetscErrorCode TSGLLESetAcceptType(TS, TSGLLEAcceptType);
1256 
1257 /*J
1258    TSEIMEXType - String with the name of an Extrapolated IMEX `TSEIMEX` type
1259 
1260    Level: beginner
1261 
1262 .seealso: [](ch_ts), `TSEIMEXSetType()`, `TS`, `TSEIMEX`, `TSEIMEXRegister()`
1263 J*/
1264 #define TSEIMEXType char *
1265 
1266 PETSC_EXTERN PetscErrorCode TSEIMEXSetMaxRows(TS, PetscInt);
1267 PETSC_EXTERN PetscErrorCode TSEIMEXSetRowCol(TS, PetscInt, PetscInt);
1268 PETSC_EXTERN PetscErrorCode TSEIMEXSetOrdAdapt(TS, PetscBool);
1269 
1270 /*J
1271    TSRKType - String with the name of a Runge-Kutta `TSRK` type
1272 
1273    Level: beginner
1274 
1275 .seealso: [](ch_ts), `TS`, `TSRKSetType()`, `TS`, `TSRK`, `TSRKRegister()`
1276 J*/
1277 typedef const char *TSRKType;
1278 #define TSRK1FE "1fe"
1279 #define TSRK2A  "2a"
1280 #define TSRK2B  "2b"
1281 #define TSRK3   "3"
1282 #define TSRK3BS "3bs"
1283 #define TSRK4   "4"
1284 #define TSRK5F  "5f"
1285 #define TSRK5DP "5dp"
1286 #define TSRK5BS "5bs"
1287 #define TSRK6VR "6vr"
1288 #define TSRK7VR "7vr"
1289 #define TSRK8VR "8vr"
1290 
1291 PETSC_EXTERN PetscErrorCode TSRKGetOrder(TS, PetscInt *);
1292 PETSC_EXTERN PetscErrorCode TSRKGetType(TS, TSRKType *);
1293 PETSC_EXTERN PetscErrorCode TSRKSetType(TS, TSRKType);
1294 PETSC_EXTERN PetscErrorCode TSRKGetTableau(TS, PetscInt *, const PetscReal **, const PetscReal **, const PetscReal **, const PetscReal **, PetscInt *, const PetscReal **, PetscBool *);
1295 PETSC_EXTERN PetscErrorCode TSRKSetMultirate(TS, PetscBool);
1296 PETSC_EXTERN PetscErrorCode TSRKGetMultirate(TS, PetscBool *);
1297 PETSC_EXTERN PetscErrorCode TSRKRegister(TSRKType, PetscInt, PetscInt, const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], PetscInt, const PetscReal[]);
1298 PETSC_EXTERN PetscErrorCode TSRKInitializePackage(void);
1299 PETSC_EXTERN PetscErrorCode TSRKFinalizePackage(void);
1300 PETSC_EXTERN PetscErrorCode TSRKRegisterDestroy(void);
1301 
1302 /*J
1303    TSMPRKType - String with the name of a partitioned Runge-Kutta `TSMPRK` type
1304 
1305    Level: beginner
1306 
1307 .seealso: [](ch_ts), `TSMPRKSetType()`, `TS`, `TSMPRK`, `TSMPRKRegister()`
1308 J*/
1309 typedef const char *TSMPRKType;
1310 #define TSMPRK2A22 "2a22"
1311 #define TSMPRK2A23 "2a23"
1312 #define TSMPRK2A32 "2a32"
1313 #define TSMPRK2A33 "2a33"
1314 #define TSMPRKP2   "p2"
1315 #define TSMPRKP3   "p3"
1316 
1317 PETSC_EXTERN PetscErrorCode TSMPRKGetType(TS, TSMPRKType *);
1318 PETSC_EXTERN PetscErrorCode TSMPRKSetType(TS, TSMPRKType);
1319 PETSC_EXTERN PetscErrorCode TSMPRKRegister(TSMPRKType, PetscInt, PetscInt, PetscInt, PetscInt, const PetscReal[], const PetscReal[], const PetscReal[], const PetscInt[], const PetscReal[], const PetscReal[], const PetscReal[], const PetscInt[], const PetscReal[], const PetscReal[], const PetscReal[]);
1320 PETSC_EXTERN PetscErrorCode TSMPRKInitializePackage(void);
1321 PETSC_EXTERN PetscErrorCode TSMPRKFinalizePackage(void);
1322 PETSC_EXTERN PetscErrorCode TSMPRKRegisterDestroy(void);
1323 
1324 /*J
1325    TSIRKType - String with the name of an implicit Runge-Kutta `TSIRK` type
1326 
1327    Level: beginner
1328 
1329 .seealso: [](ch_ts), `TSIRKSetType()`, `TS`, `TSIRK`, `TSIRKRegister()`
1330 J*/
1331 typedef const char *TSIRKType;
1332 #define TSIRKGAUSS "gauss"
1333 
1334 PETSC_EXTERN PetscErrorCode TSIRKGetType(TS, TSIRKType *);
1335 PETSC_EXTERN PetscErrorCode TSIRKSetType(TS, TSIRKType);
1336 PETSC_EXTERN PetscErrorCode TSIRKGetNumStages(TS, PetscInt *);
1337 PETSC_EXTERN PetscErrorCode TSIRKSetNumStages(TS, PetscInt);
1338 PETSC_EXTERN PetscErrorCode TSIRKRegister(const char[], PetscErrorCode (*function)(TS));
1339 PETSC_EXTERN PetscErrorCode TSIRKTableauCreate(TS, PetscInt, const PetscReal *, const PetscReal *, const PetscReal *, const PetscReal *, const PetscScalar *, const PetscScalar *, const PetscScalar *);
1340 PETSC_EXTERN PetscErrorCode TSIRKInitializePackage(void);
1341 PETSC_EXTERN PetscErrorCode TSIRKFinalizePackage(void);
1342 PETSC_EXTERN PetscErrorCode TSIRKRegisterDestroy(void);
1343 
1344 /*J
1345    TSGLEEType - String with the name of a General Linear with Error Estimation `TSGLEE` type
1346 
1347    Level: beginner
1348 
1349 .seealso: [](ch_ts), `TSGLEESetType()`, `TS`, `TSGLEE`, `TSGLEERegister()`
1350 J*/
1351 typedef const char *TSGLEEType;
1352 #define TSGLEEi1      "BE1"
1353 #define TSGLEE23      "23"
1354 #define TSGLEE24      "24"
1355 #define TSGLEE25I     "25i"
1356 #define TSGLEE35      "35"
1357 #define TSGLEEEXRK2A  "exrk2a"
1358 #define TSGLEERK32G1  "rk32g1"
1359 #define TSGLEERK285EX "rk285ex"
1360 
1361 /*J
1362    TSGLEEMode - String with the mode of error estimation for a General Linear with Error Estimation `TSGLEE` type
1363 
1364    Level: beginner
1365 
1366 .seealso: [](ch_ts), `TSGLEESetMode()`, `TS`, `TSGLEE`, `TSGLEERegister()`
1367 J*/
1368 PETSC_EXTERN PetscErrorCode TSGLEEGetType(TS, TSGLEEType *);
1369 PETSC_EXTERN PetscErrorCode TSGLEESetType(TS, TSGLEEType);
1370 PETSC_EXTERN PetscErrorCode TSGLEERegister(TSGLEEType, PetscInt, PetscInt, PetscInt, PetscReal, const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], PetscInt, const PetscReal[]);
1371 PETSC_EXTERN PetscErrorCode TSGLEERegisterAll(void);
1372 PETSC_EXTERN PetscErrorCode TSGLEEFinalizePackage(void);
1373 PETSC_EXTERN PetscErrorCode TSGLEEInitializePackage(void);
1374 PETSC_EXTERN PetscErrorCode TSGLEERegisterDestroy(void);
1375 
1376 /*J
1377    TSARKIMEXType - String with the name of an Additive Runge-Kutta IMEX `TSARKIMEX` type
1378 
1379    Level: beginner
1380 
1381 .seealso: [](ch_ts), `TSARKIMEXSetType()`, `TS`, `TSARKIMEX`, `TSARKIMEXRegister()`
1382 J*/
1383 typedef const char *TSARKIMEXType;
1384 #define TSARKIMEX1BEE   "1bee"
1385 #define TSARKIMEXA2     "a2"
1386 #define TSARKIMEXL2     "l2"
1387 #define TSARKIMEXARS122 "ars122"
1388 #define TSARKIMEX2C     "2c"
1389 #define TSARKIMEX2D     "2d"
1390 #define TSARKIMEX2E     "2e"
1391 #define TSARKIMEXPRSSP2 "prssp2"
1392 #define TSARKIMEX3      "3"
1393 #define TSARKIMEXBPR3   "bpr3"
1394 #define TSARKIMEXARS443 "ars443"
1395 #define TSARKIMEX4      "4"
1396 #define TSARKIMEX5      "5"
1397 
1398 PETSC_EXTERN PetscErrorCode TSARKIMEXGetType(TS, TSARKIMEXType *);
1399 PETSC_EXTERN PetscErrorCode TSARKIMEXSetType(TS, TSARKIMEXType);
1400 PETSC_EXTERN PetscErrorCode TSARKIMEXSetFullyImplicit(TS, PetscBool);
1401 PETSC_EXTERN PetscErrorCode TSARKIMEXGetFullyImplicit(TS, PetscBool *);
1402 PETSC_EXTERN PetscErrorCode TSARKIMEXSetFastSlowSplit(TS, PetscBool);
1403 PETSC_EXTERN PetscErrorCode TSARKIMEXGetFastSlowSplit(TS, PetscBool *);
1404 PETSC_EXTERN PetscErrorCode TSARKIMEXRegister(TSARKIMEXType, PetscInt, PetscInt, const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], PetscInt, const PetscReal[], const PetscReal[]);
1405 PETSC_EXTERN PetscErrorCode TSARKIMEXInitializePackage(void);
1406 PETSC_EXTERN PetscErrorCode TSARKIMEXFinalizePackage(void);
1407 PETSC_EXTERN PetscErrorCode TSARKIMEXRegisterDestroy(void);
1408 
1409 /*J
1410    TSDIRKType - String with the name of a Diagonally Implicit Runge-Kutta `TSDIRK` type
1411 
1412    Level: beginner
1413 
1414 .seealso: [](ch_ts), `TSDIRKSetType()`, `TS`, `TSDIRK`, `TSDIRKRegister()`
1415 J*/
1416 typedef const char *TSDIRKType;
1417 #define TSDIRKS212      "s212"
1418 #define TSDIRKES122SAL  "es122sal"
1419 #define TSDIRKES213SAL  "es213sal"
1420 #define TSDIRKES324SAL  "es324sal"
1421 #define TSDIRKES325SAL  "es325sal"
1422 #define TSDIRK657A      "657a"
1423 #define TSDIRKES648SA   "es648sa"
1424 #define TSDIRK658A      "658a"
1425 #define TSDIRKS659A     "s659a"
1426 #define TSDIRK7510SAL   "7510sal"
1427 #define TSDIRKES7510SA  "es7510sa"
1428 #define TSDIRK759A      "759a"
1429 #define TSDIRKS7511SAL  "s7511sal"
1430 #define TSDIRK8614A     "8614a"
1431 #define TSDIRK8616SAL   "8616sal"
1432 #define TSDIRKES8516SAL "es8516sal"
1433 
1434 PETSC_EXTERN PetscErrorCode TSDIRKGetType(TS, TSDIRKType *);
1435 PETSC_EXTERN PetscErrorCode TSDIRKSetType(TS, TSDIRKType);
1436 PETSC_EXTERN PetscErrorCode TSDIRKRegister(TSDIRKType, PetscInt, PetscInt, const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], PetscInt, const PetscReal[]);
1437 
1438 /*J
1439    TSRosWType - String with the name of a Rosenbrock-W `TSROSW` type
1440 
1441    Level: beginner
1442 
1443 .seealso: [](ch_ts), `TSRosWSetType()`, `TS`, `TSROSW`, `TSRosWRegister()`
1444 J*/
1445 typedef const char *TSRosWType;
1446 #define TSROSW2M          "2m"
1447 #define TSROSW2P          "2p"
1448 #define TSROSWRA3PW       "ra3pw"
1449 #define TSROSWRA34PW2     "ra34pw2"
1450 #define TSROSWR34PRW      "r34prw"
1451 #define TSROSWR3PRL2      "r3prl2"
1452 #define TSROSWRODAS3      "rodas3"
1453 #define TSROSWRODASPR     "rodaspr"
1454 #define TSROSWRODASPR2    "rodaspr2"
1455 #define TSROSWSANDU3      "sandu3"
1456 #define TSROSWASSP3P3S1C  "assp3p3s1c"
1457 #define TSROSWLASSP3P4S2C "lassp3p4s2c"
1458 #define TSROSWLLSSP3P4S2C "llssp3p4s2c"
1459 #define TSROSWARK3        "ark3"
1460 #define TSROSWTHETA1      "theta1"
1461 #define TSROSWTHETA2      "theta2"
1462 #define TSROSWGRK4T       "grk4t"
1463 #define TSROSWSHAMP4      "shamp4"
1464 #define TSROSWVELDD4      "veldd4"
1465 #define TSROSW4L          "4l"
1466 
1467 PETSC_EXTERN PetscErrorCode TSRosWGetType(TS, TSRosWType *);
1468 PETSC_EXTERN PetscErrorCode TSRosWSetType(TS, TSRosWType);
1469 PETSC_EXTERN PetscErrorCode TSRosWSetRecomputeJacobian(TS, PetscBool);
1470 PETSC_EXTERN PetscErrorCode TSRosWRegister(TSRosWType, PetscInt, PetscInt, const PetscReal[], const PetscReal[], const PetscReal[], const PetscReal[], PetscInt, const PetscReal[]);
1471 PETSC_EXTERN PetscErrorCode TSRosWRegisterRos4(TSRosWType, PetscReal, PetscReal, PetscReal, PetscReal, PetscReal);
1472 PETSC_EXTERN PetscErrorCode TSRosWInitializePackage(void);
1473 PETSC_EXTERN PetscErrorCode TSRosWFinalizePackage(void);
1474 PETSC_EXTERN PetscErrorCode TSRosWRegisterDestroy(void);
1475 
1476 PETSC_EXTERN PetscErrorCode TSBDFSetOrder(TS, PetscInt);
1477 PETSC_EXTERN PetscErrorCode TSBDFGetOrder(TS, PetscInt *);
1478 
1479 /*J
1480   TSBasicSymplecticType - String with the name of a basic symplectic integration `TSBASICSYMPLECTIC` type
1481 
1482   Level: beginner
1483 
1484 .seealso: [](ch_ts), `TSBasicSymplecticSetType()`, `TS`, `TSBASICSYMPLECTIC`, `TSBasicSymplecticRegister()`
1485 J*/
1486 typedef const char *TSBasicSymplecticType;
1487 #define TSBASICSYMPLECTICSIEULER   "1"
1488 #define TSBASICSYMPLECTICVELVERLET "2"
1489 #define TSBASICSYMPLECTIC3         "3"
1490 #define TSBASICSYMPLECTIC4         "4"
1491 
1492 PETSC_EXTERN PetscErrorCode TSBasicSymplecticSetType(TS, TSBasicSymplecticType);
1493 PETSC_EXTERN PetscErrorCode TSBasicSymplecticGetType(TS, TSBasicSymplecticType *);
1494 PETSC_EXTERN PetscErrorCode TSBasicSymplecticRegister(TSBasicSymplecticType, PetscInt, PetscInt, PetscReal[], PetscReal[]);
1495 PETSC_EXTERN PetscErrorCode TSBasicSymplecticRegisterAll(void);
1496 PETSC_EXTERN PetscErrorCode TSBasicSymplecticInitializePackage(void);
1497 PETSC_EXTERN PetscErrorCode TSBasicSymplecticFinalizePackage(void);
1498 PETSC_EXTERN PetscErrorCode TSBasicSymplecticRegisterDestroy(void);
1499 
1500 /*J
1501   TSDISCGRAD - The Discrete Gradient integrator is a timestepper for Hamiltonian systems designed to conserve the first integral (energy),
1502   but also has the property for some systems of monotonicity in a functional.
1503 
1504   Level: beginner
1505 
1506 .seealso: [](ch_ts), `TS`, TSDiscGradSetFormulation()`, `TSDiscGradGetFormulation()`, `TSDiscGradSetType()`, `TSDiscGradGetType()`
1507 J*/
1508 typedef enum {
1509   TS_DG_GONZALEZ,
1510   TS_DG_AVERAGE,
1511   TS_DG_NONE
1512 } TSDGType;
1513 PETSC_EXTERN PetscErrorCode TSDiscGradSetFormulation(TS, PetscErrorCode (*)(TS, PetscReal, Vec, Mat, void *), PetscErrorCode (*)(TS, PetscReal, Vec, PetscScalar *, void *), PetscErrorCode (*)(TS, PetscReal, Vec, Vec, void *), void *);
1514 PETSC_EXTERN PetscErrorCode TSDiscGradGetFormulation(TS, PetscErrorCode (**)(TS, PetscReal, Vec, Mat, void *), PetscErrorCode (**)(TS, PetscReal, Vec, PetscScalar *, void *), PetscErrorCode (**)(TS, PetscReal, Vec, Vec, void *), void *);
1515 PETSC_EXTERN PetscErrorCode TSDiscGradSetType(TS, TSDGType);
1516 PETSC_EXTERN PetscErrorCode TSDiscGradGetType(TS, TSDGType *);
1517 
1518 /*
1519        PETSc interface to Sundials
1520 */
1521 #ifdef PETSC_HAVE_SUNDIALS2
1522 typedef enum {
1523   SUNDIALS_ADAMS = 1,
1524   SUNDIALS_BDF   = 2
1525 } TSSundialsLmmType;
1526 PETSC_EXTERN const char *const TSSundialsLmmTypes[];
1527 typedef enum {
1528   SUNDIALS_MODIFIED_GS  = 1,
1529   SUNDIALS_CLASSICAL_GS = 2
1530 } TSSundialsGramSchmidtType;
1531 PETSC_EXTERN const char *const TSSundialsGramSchmidtTypes[];
1532 
1533 PETSC_EXTERN PetscErrorCode TSSundialsSetType(TS, TSSundialsLmmType);
1534 PETSC_EXTERN PetscErrorCode TSSundialsGetPC(TS, PC *);
1535 PETSC_EXTERN PetscErrorCode TSSundialsSetTolerance(TS, PetscReal, PetscReal);
1536 PETSC_EXTERN PetscErrorCode TSSundialsSetMinTimeStep(TS, PetscReal);
1537 PETSC_EXTERN PetscErrorCode TSSundialsSetMaxTimeStep(TS, PetscReal);
1538 PETSC_EXTERN PetscErrorCode TSSundialsGetIterations(TS, PetscInt *, PetscInt *);
1539 PETSC_EXTERN PetscErrorCode TSSundialsSetGramSchmidtType(TS, TSSundialsGramSchmidtType);
1540 PETSC_EXTERN PetscErrorCode TSSundialsSetGMRESRestart(TS, PetscInt);
1541 PETSC_EXTERN PetscErrorCode TSSundialsSetLinearTolerance(TS, PetscReal);
1542 PETSC_EXTERN PetscErrorCode TSSundialsMonitorInternalSteps(TS, PetscBool);
1543 PETSC_EXTERN PetscErrorCode TSSundialsSetMaxl(TS, PetscInt);
1544 PETSC_EXTERN PetscErrorCode TSSundialsSetMaxord(TS, PetscInt);
1545 PETSC_EXTERN PetscErrorCode TSSundialsSetUseDense(TS, PetscBool);
1546 #endif
1547 
1548 PETSC_EXTERN PetscErrorCode TSThetaSetTheta(TS, PetscReal);
1549 PETSC_EXTERN PetscErrorCode TSThetaGetTheta(TS, PetscReal *);
1550 PETSC_EXTERN PetscErrorCode TSThetaGetEndpoint(TS, PetscBool *);
1551 PETSC_EXTERN PetscErrorCode TSThetaSetEndpoint(TS, PetscBool);
1552 
1553 PETSC_EXTERN PetscErrorCode TSAlphaSetRadius(TS, PetscReal);
1554 PETSC_EXTERN PetscErrorCode TSAlphaSetParams(TS, PetscReal, PetscReal, PetscReal);
1555 PETSC_EXTERN PetscErrorCode TSAlphaGetParams(TS, PetscReal *, PetscReal *, PetscReal *);
1556 
1557 PETSC_EXTERN PetscErrorCode TSAlpha2SetRadius(TS, PetscReal);
1558 PETSC_EXTERN PetscErrorCode TSAlpha2SetParams(TS, PetscReal, PetscReal, PetscReal, PetscReal);
1559 PETSC_EXTERN PetscErrorCode TSAlpha2GetParams(TS, PetscReal *, PetscReal *, PetscReal *, PetscReal *);
1560 
1561 /*S
1562   TSAlpha2PredictorFn - A callback to set the predictor (i.e., the initial guess for the nonlinear solver) in
1563   a second-order generalized-alpha time integrator.
1564 
1565   Calling Sequence:
1566 + ts   - the `TS` context obtained from `TSCreate()`
1567 . X0   - the previous time step's state vector
1568 . V0   - the previous time step's first derivative of the state vector
1569 . A0   - the previous time step's second derivative of the state vector
1570 . X1   - the vector into which the initial guess for the current time step will be written
1571 - ctx  - [optional] user-defined context for the predictor evaluation routine (may be `NULL`)
1572 
1573   Level: intermediate
1574 
1575   Note:
1576   The deprecated `TSAlpha2Predictor` still works as a replacement for `TSAlpha2PredictorFn` *.
1577 
1578 .seealso: [](ch_ts), `TS`, `TSAlpha2SetPredictor()`
1579 S*/
1580 PETSC_EXTERN_TYPEDEF typedef PetscErrorCode TSAlpha2PredictorFn(TS ts, Vec X0, Vec V0, Vec A0, Vec X1, void *ctx);
1581 
1582 PETSC_EXTERN_TYPEDEF typedef TSAlpha2PredictorFn *TSAlpha2Predictor;
1583 
1584 PETSC_EXTERN PetscErrorCode TSAlpha2SetPredictor(TS, TSAlpha2PredictorFn *, void *);
1585 
1586 PETSC_EXTERN PetscErrorCode TSSetDM(TS, DM);
1587 PETSC_EXTERN PetscErrorCode TSGetDM(TS, DM *);
1588 
1589 PETSC_EXTERN PetscErrorCode SNESTSFormFunction(SNES, Vec, Vec, void *);
1590 PETSC_EXTERN PetscErrorCode SNESTSFormJacobian(SNES, Vec, Mat, Mat, void *);
1591 
1592 PETSC_EXTERN PetscErrorCode TSRHSJacobianTest(TS, PetscBool *);
1593 PETSC_EXTERN PetscErrorCode TSRHSJacobianTestTranspose(TS, PetscBool *);
1594 
1595 PETSC_EXTERN PetscErrorCode TSGetComputeInitialCondition(TS, PetscErrorCode (**)(TS, Vec));
1596 PETSC_EXTERN PetscErrorCode TSSetComputeInitialCondition(TS, PetscErrorCode (*)(TS, Vec));
1597 PETSC_EXTERN PetscErrorCode TSComputeInitialCondition(TS, Vec);
1598 PETSC_EXTERN PetscErrorCode TSGetComputeExactError(TS, PetscErrorCode (**)(TS, Vec, Vec));
1599 PETSC_EXTERN PetscErrorCode TSSetComputeExactError(TS, PetscErrorCode (*)(TS, Vec, Vec));
1600 PETSC_EXTERN PetscErrorCode TSComputeExactError(TS, Vec, Vec);
1601 PETSC_EXTERN PetscErrorCode PetscConvEstUseTS(PetscConvEst, PetscBool);
1602 
1603 PETSC_EXTERN PetscErrorCode TSSetMatStructure(TS, MatStructure);
1604