1 /* 2 User interface for the nonlinear solvers package. 3 */ 4 #if !defined(__PETSCSNES_H) 5 #define __PETSCSNES_H 6 #include "petscksp.h" 7 PETSC_EXTERN_CXX_BEGIN 8 9 /*S 10 SNES - Abstract PETSc object that manages all nonlinear solves 11 12 Level: beginner 13 14 Concepts: nonlinear solvers 15 16 .seealso: SNESCreate(), SNESSetType(), SNESType, TS, KSP, KSP, PC 17 S*/ 18 typedef struct _p_SNES* SNES; 19 20 /*E 21 SNESType - String with the name of a PETSc SNES method or the creation function 22 with an optional dynamic library name, for example 23 http://www.mcs.anl.gov/petsc/lib.a:mysnescreate() 24 25 Level: beginner 26 27 .seealso: SNESSetType(), SNES 28 E*/ 29 #define SNESType char* 30 #define SNESLS "ls" 31 #define SNESTR "tr" 32 #define SNESPYTHON "python" 33 #define SNESTEST "test" 34 #define SNESPICARD "picard" 35 #define SNESKSPONLY "ksponly" 36 37 /* Logging support */ 38 extern PetscClassId PETSCSNES_DLLEXPORT SNES_CLASSID; 39 40 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESInitializePackage(const char[]); 41 42 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESCreate(MPI_Comm,SNES*); 43 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESDestroy(SNES); 44 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetType(SNES,const SNESType); 45 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorSet(SNES,PetscErrorCode(*)(SNES,PetscInt,PetscReal,void*),void *,PetscErrorCode (*)(void*)); 46 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorCancel(SNES); 47 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetConvergenceHistory(SNES,PetscReal[],PetscInt[],PetscInt,PetscTruth); 48 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetConvergenceHistory(SNES,PetscReal*[],PetscInt *[],PetscInt *); 49 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetUp(SNES); 50 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSolve(SNES,Vec,Vec); 51 52 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESAddOptionsChecker(PetscErrorCode (*)(SNES)); 53 54 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetUpdate(SNES, PetscErrorCode (*)(SNES, PetscInt)); 55 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESDefaultUpdate(SNES, PetscInt); 56 57 extern PetscFList SNESList; 58 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESRegisterDestroy(void); 59 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESRegisterAll(const char[]); 60 61 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESRegister(const char[],const char[],const char[],PetscErrorCode (*)(SNES)); 62 63 /*MC 64 SNESRegisterDynamic - Adds a method to the nonlinear solver package. 65 66 Synopsis: 67 PetscErrorCode SNESRegisterDynamic(const char *name_solver,const char *path,const char *name_create,PetscErrorCode (*routine_create)(SNES)) 68 69 Not collective 70 71 Input Parameters: 72 + name_solver - name of a new user-defined solver 73 . path - path (either absolute or relative) the library containing this solver 74 . name_create - name of routine to create method context 75 - routine_create - routine to create method context 76 77 Notes: 78 SNESRegisterDynamic() may be called multiple times to add several user-defined solvers. 79 80 If dynamic libraries are used, then the fourth input argument (routine_create) 81 is ignored. 82 83 Environmental variables such as ${PETSC_ARCH}, ${PETSC_DIR}, ${PETSC_LIB_DIR}, 84 and others of the form ${any_environmental_variable} occuring in pathname will be 85 replaced with appropriate values. 86 87 Sample usage: 88 .vb 89 SNESRegisterDynamic("my_solver",/home/username/my_lib/lib/libg/solaris/mylib.a, 90 "MySolverCreate",MySolverCreate); 91 .ve 92 93 Then, your solver can be chosen with the procedural interface via 94 $ SNESSetType(snes,"my_solver") 95 or at runtime via the option 96 $ -snes_type my_solver 97 98 Level: advanced 99 100 Note: If your function is not being put into a shared library then use SNESRegister() instead 101 102 .keywords: SNES, nonlinear, register 103 104 .seealso: SNESRegisterAll(), SNESRegisterDestroy() 105 M*/ 106 #if defined(PETSC_USE_DYNAMIC_LIBRARIES) 107 #define SNESRegisterDynamic(a,b,c,d) SNESRegister(a,b,c,0) 108 #else 109 #define SNESRegisterDynamic(a,b,c,d) SNESRegister(a,b,c,d) 110 #endif 111 112 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetKSP(SNES,KSP*); 113 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetKSP(SNES,KSP); 114 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetSolution(SNES,Vec*); 115 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetSolutionUpdate(SNES,Vec*); 116 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetFunction(SNES,Vec*,PetscErrorCode(**)(SNES,Vec,Vec,void*),void**); 117 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESView(SNES,PetscViewer); 118 119 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetOptionsPrefix(SNES,const char[]); 120 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESAppendOptionsPrefix(SNES,const char[]); 121 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetOptionsPrefix(SNES,const char*[]); 122 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetFromOptions(SNES); 123 124 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT MatCreateSNESMF(SNES,Mat*); 125 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT MatMFFDComputeJacobian(SNES,Vec,Mat*,Mat*,MatStructure*,void*); 126 127 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT MatDAADSetSNES(Mat,SNES); 128 129 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetType(SNES,const SNESType*); 130 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorDefault(SNES,PetscInt,PetscReal,void *); 131 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorRange(SNES,PetscInt,PetscReal,void *); 132 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorRatio(SNES,PetscInt,PetscReal,void *); 133 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorSetRatio(SNES,PetscViewerASCIIMonitor); 134 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorSolution(SNES,PetscInt,PetscReal,void *); 135 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorResidual(SNES,PetscInt,PetscReal,void *); 136 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorSolutionUpdate(SNES,PetscInt,PetscReal,void *); 137 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorDefaultShort(SNES,PetscInt,PetscReal,void *); 138 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetTolerances(SNES,PetscReal,PetscReal,PetscReal,PetscInt,PetscInt); 139 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetTolerances(SNES,PetscReal*,PetscReal*,PetscReal*,PetscInt*,PetscInt*); 140 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetTrustRegionTolerance(SNES,PetscReal); 141 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetFunctionNorm(SNES,PetscReal*); 142 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetIterationNumber(SNES,PetscInt*); 143 144 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetNonlinearStepFailures(SNES,PetscInt*); 145 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetMaxNonlinearStepFailures(SNES,PetscInt); 146 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetMaxNonlinearStepFailures(SNES,PetscInt*); 147 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetNumberFunctionEvals(SNES,PetscInt*); 148 149 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetLagPreconditioner(SNES,PetscInt); 150 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetLagPreconditioner(SNES,PetscInt*); 151 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetLagJacobian(SNES,PetscInt); 152 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetLagJacobian(SNES,PetscInt*); 153 154 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetLinearSolveIterations(SNES,PetscInt*); 155 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetLinearSolveFailures(SNES,PetscInt*); 156 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetMaxLinearSolveFailures(SNES,PetscInt); 157 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetMaxLinearSolveFailures(SNES,PetscInt*); 158 159 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESKSPSetUseEW(SNES,PetscTruth); 160 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESKSPGetUseEW(SNES,PetscTruth*); 161 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESKSPSetParametersEW(SNES,PetscInt,PetscReal,PetscReal,PetscReal,PetscReal,PetscReal,PetscReal); 162 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESKSPGetParametersEW(SNES,PetscInt*,PetscReal*,PetscReal*,PetscReal*,PetscReal*,PetscReal*,PetscReal*); 163 164 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorLGCreate(const char[],const char[],int,int,int,int,PetscDrawLG*); 165 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorLG(SNES,PetscInt,PetscReal,void*); 166 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorLGDestroy(PetscDrawLG); 167 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorLGRangeCreate(const char[],const char[],int,int,int,int,PetscDrawLG*); 168 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorLGRange(SNES,PetscInt,PetscReal,void*); 169 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESMonitorLGRangeDestroy(PetscDrawLG); 170 171 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetApplicationContext(SNES,void *); 172 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetApplicationContext(SNES,void **); 173 174 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESPythonSetType(SNES,const char[]); 175 176 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetFunctionDomainError(SNES); 177 /*E 178 SNESConvergedReason - reason a SNES method was said to 179 have converged or diverged 180 181 Level: beginner 182 183 The two most common reasons for divergence are 184 $ 1) an incorrectly coded or computed Jacobian or 185 $ 2) failure or lack of convergence in the linear system (in this case we recommend 186 $ testing with -pc_type lu to eliminate the linear solver as the cause of the problem). 187 188 Diverged Reasons: 189 . SNES_DIVERGED_LOCAL_MIN - this can only occur when using the line-search variant of SNES. 190 The line search wants to minimize Q(alpha) = 1/2 || F(x + alpha s) ||^2_2 this occurs 191 at Q'(alpha) = s^T F'(x+alpha s)^T F(x+alpha s) = 0. If s is the Newton direction - F'(x)^(-1)F(x) then 192 you get Q'(alpha) = -F(x)^T F'(x)^(-1)^T F'(x+alpha s)F(x+alpha s); when alpha = 0 193 Q'(0) = - ||F(x)||^2_2 which is always NEGATIVE if F'(x) is invertible. This means the Newton 194 direction is a descent direction and the line search should succeed if alpha is small enough. 195 196 If F'(x) is NOT invertible AND F'(x)^T F(x) = 0 then Q'(0) = 0 and the Newton direction 197 is NOT a descent direction so the line search will fail. All one can do at this point 198 is change the initial guess and try again. 199 200 An alternative explanation: Newton's method can be regarded as replacing the function with 201 its linear approximation and minimizing the 2-norm of that. That is F(x+s) approx F(x) + F'(x)s 202 so we minimize || F(x) + F'(x) s ||^2_2; do this using Least Squares. If F'(x) is invertible then 203 s = - F'(x)^(-1)F(x) otherwise F'(x)^T F'(x) s = -F'(x)^T F(x). If F'(x)^T F(x) is NOT zero then there 204 exists a nontrival (that is F'(x)s != 0) solution to the equation and this direction is 205 s = - [F'(x)^T F'(x)]^(-1) F'(x)^T F(x) so Q'(0) = - F(x)^T F'(x) [F'(x)^T F'(x)]^(-T) F'(x)^T F(x) 206 = - (F'(x)^T F(x)) [F'(x)^T F'(x)]^(-T) (F'(x)^T F(x)). Since we are assuming (F'(x)^T F(x)) != 0 207 and F'(x)^T F'(x) has no negative eigenvalues Q'(0) < 0 so s is a descent direction and the line 208 search should succeed for small enough alpha. 209 210 Note that this RARELY happens in practice. Far more likely the linear system is not being solved 211 (well enough?) or the Jacobian is wrong. 212 213 SNES_DIVERGED_MAX_IT means that the solver reached the maximum number of iterations without satisfying any 214 convergence criteria. SNES_CONVERGED_ITS means that SNESSkipConverged() was chosen as the convergence test; 215 thus the usual convergence criteria have not been checked and may or may not be satisfied. 216 217 Developer Notes: this must match finclude/petscsnes.h 218 219 The string versions of these are in SNESConvergedReason, if you change any value here you must 220 also adjust that array. 221 222 Each reason has its own manual page. 223 224 .seealso: SNESSolve(), SNESGetConvergedReason(), KSPConvergedReason, SNESSetConvergenceTest() 225 E*/ 226 typedef enum {/* converged */ 227 SNES_CONVERGED_FNORM_ABS = 2, /* ||F|| < atol */ 228 SNES_CONVERGED_FNORM_RELATIVE = 3, /* ||F|| < rtol*||F_initial|| */ 229 SNES_CONVERGED_PNORM_RELATIVE = 4, /* Newton computed step size small; || delta x || < stol */ 230 SNES_CONVERGED_ITS = 5, /* maximum iterations reached */ 231 SNES_CONVERGED_TR_DELTA = 7, 232 /* diverged */ 233 SNES_DIVERGED_FUNCTION_DOMAIN = -1, /* the new x location passed the function is not in the domain of F */ 234 SNES_DIVERGED_FUNCTION_COUNT = -2, 235 SNES_DIVERGED_LINEAR_SOLVE = -3, /* the linear solve failed */ 236 SNES_DIVERGED_FNORM_NAN = -4, 237 SNES_DIVERGED_MAX_IT = -5, 238 SNES_DIVERGED_LS_FAILURE = -6, /* the line search failed */ 239 SNES_DIVERGED_LOCAL_MIN = -8, /* || J^T b || is small, implies converged to local minimum of F() */ 240 SNES_CONVERGED_ITERATING = 0} SNESConvergedReason; 241 extern const char **SNESConvergedReasons; 242 243 /*MC 244 SNES_CONVERGED_FNORM_ABS - 2-norm(F) <= abstol 245 246 Level: beginner 247 248 .seealso: SNESSolve(), SNESGetConvergedReason(), SNESConvergedReason, SNESSetTolerances() 249 250 M*/ 251 252 /*MC 253 SNES_CONVERGED_FNORM_RELATIVE - 2-norm(F) <= rtol*2-norm(F(x_0)) where x_0 is the initial guess 254 255 Level: beginner 256 257 .seealso: SNESSolve(), SNESGetConvergedReason(), SNESConvergedReason, SNESSetTolerances() 258 259 M*/ 260 261 /*MC 262 SNES_CONVERGED_PNORM_RELATIVE - The 2-norm of the last step <= stol * 2-norm(x) where x is the current 263 solution and stol is the 4th argument to SNESSetTolerances() 264 265 Level: beginner 266 267 .seealso: SNESSolve(), SNESGetConvergedReason(), SNESConvergedReason, SNESSetTolerances() 268 269 M*/ 270 271 /*MC 272 SNES_DIVERGED_FUNCTION_COUNT - The user provided function has been called more times then the final 273 argument to SNESSetTolerances() 274 275 Level: beginner 276 277 .seealso: SNESSolve(), SNESGetConvergedReason(), SNESConvergedReason, SNESSetTolerances() 278 279 M*/ 280 281 /*MC 282 SNES_DIVERGED_FNORM_NAN - the 2-norm of the current function evaluation is not-a-number (NaN), this 283 is usually caused by a division of 0 by 0. 284 285 Level: beginner 286 287 .seealso: SNESSolve(), SNESGetConvergedReason(), SNESConvergedReason, SNESSetTolerances() 288 289 M*/ 290 291 /*MC 292 SNES_DIVERGED_MAX_IT - SNESSolve() has reached the maximum number of iterations requested 293 294 Level: beginner 295 296 .seealso: SNESSolve(), SNESGetConvergedReason(), SNESConvergedReason, SNESSetTolerances() 297 298 M*/ 299 300 /*MC 301 SNES_DIVERGED_LS_FAILURE - The line search has failed. This only occurs for a SNESType of SNESLS 302 303 Level: beginner 304 305 .seealso: SNESSolve(), SNESGetConvergedReason(), SNESConvergedReason, SNESSetTolerances() 306 307 M*/ 308 309 /*MC 310 SNES_DIVERGED_LOCAL_MIN - the algorithm seems to have stagnated at a local minimum that is not zero. 311 See the manual page for SNESConvergedReason for more details 312 313 Level: beginner 314 315 .seealso: SNESSolve(), SNESGetConvergedReason(), SNESConvergedReason, SNESSetTolerances() 316 317 M*/ 318 319 /*MC 320 SNES_CONERGED_ITERATING - this only occurs if SNESGetConvergedReason() is called during the SNESSolve() 321 322 Level: beginner 323 324 .seealso: SNESSolve(), SNESGetConvergedReason(), SNESConvergedReason, SNESSetTolerances() 325 326 M*/ 327 328 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetConvergenceTest(SNES,PetscErrorCode (*)(SNES,PetscInt,PetscReal,PetscReal,PetscReal,SNESConvergedReason*,void*),void*,PetscErrorCode (*)(void*)); 329 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESDefaultConverged(SNES,PetscInt,PetscReal,PetscReal,PetscReal,SNESConvergedReason*,void*); 330 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSkipConverged(SNES,PetscInt,PetscReal,PetscReal,PetscReal,SNESConvergedReason*,void*); 331 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetConvergedReason(SNES,SNESConvergedReason*); 332 333 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESDAFormFunction(SNES,Vec,Vec,void*); 334 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESDAComputeJacobianWithAdic(SNES,Vec,Mat*,Mat*,MatStructure*,void*); 335 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESDAComputeJacobianWithAdifor(SNES,Vec,Mat*,Mat*,MatStructure*,void*); 336 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESDAComputeJacobian(SNES,Vec,Mat*,Mat*,MatStructure*,void*); 337 338 /* --------- Solving systems of nonlinear equations --------------- */ 339 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetFunction(SNES,Vec,PetscErrorCode(*)(SNES,Vec,Vec,void*),void *); 340 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESComputeFunction(SNES,Vec,Vec); 341 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESSetJacobian(SNES,Mat,Mat,PetscErrorCode(*)(SNES,Vec,Mat*,Mat*,MatStructure*,void*),void *); 342 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetJacobian(SNES,Mat*,Mat*,PetscErrorCode(**)(SNES,Vec,Mat*,Mat*,MatStructure*,void*),void **); 343 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESDefaultComputeJacobian(SNES,Vec,Mat*,Mat*,MatStructure*,void*); 344 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESDefaultComputeJacobianColor(SNES,Vec,Mat*,Mat*,MatStructure*,void*); 345 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESGetRhs(SNES,Vec*); 346 347 /* --------- Routines specifically for line search methods --------------- */ 348 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESLineSearchSet(SNES,PetscErrorCode(*)(SNES,void*,Vec,Vec,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal*,PetscReal*,PetscTruth*),void*); 349 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESLineSearchNo(SNES,void*,Vec,Vec,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal*,PetscReal*,PetscTruth*); 350 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESLineSearchNoNorms(SNES,void*,Vec,Vec,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal*,PetscReal*,PetscTruth*); 351 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESLineSearchCubic(SNES,void*,Vec,Vec,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal*,PetscReal*,PetscTruth*); 352 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESLineSearchQuadratic(SNES,void*,Vec,Vec,Vec,Vec,Vec,PetscReal,PetscReal,PetscReal*,PetscReal*,PetscTruth*); 353 354 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESLineSearchSetPostCheck(SNES,PetscErrorCode(*)(SNES,Vec,Vec,Vec,void*,PetscTruth*,PetscTruth*),void*); 355 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESLineSearchSetPreCheck(SNES,PetscErrorCode(*)(SNES,Vec,Vec,void*,PetscTruth*),void*); 356 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESLineSearchSetParams(SNES,PetscReal,PetscReal,PetscReal); 357 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESLineSearchGetParams(SNES,PetscReal*,PetscReal*,PetscReal*); 358 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESLineSearchSetMonitor(SNES,PetscTruth); 359 360 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESTestLocalMin(SNES); 361 362 /* Should this routine be private? */ 363 EXTERN PetscErrorCode PETSCSNES_DLLEXPORT SNESComputeJacobian(SNES,Vec,Mat*,Mat*,MatStructure*); 364 365 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT SNESSetDM(SNES,DM); 366 EXTERN PetscErrorCode PETSCKSP_DLLEXPORT SNESGetDM(SNES,DM*); 367 368 PETSC_EXTERN_CXX_END 369 #endif 370