| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| 3 | SLEPc - Scalable Library for Eigenvalue Problem Computations | ||
| 4 | Copyright (c) 2002-, Universitat Politecnica de Valencia, Spain | ||
| 5 | |||
| 6 | This file is part of SLEPc. | ||
| 7 | SLEPc is distributed under a 2-clause BSD license (see LICENSE). | ||
| 8 | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| 9 | */ | ||
| 10 | /* | ||
| 11 | Routines to set ST methods and options | ||
| 12 | */ | ||
| 13 | |||
| 14 | #include <slepc/private/stimpl.h> /*I "slepcst.h" I*/ | ||
| 15 | |||
| 16 | PetscBool STRegisterAllCalled = PETSC_FALSE; | ||
| 17 | PetscFunctionList STList = NULL; | ||
| 18 | |||
| 19 | /*@ | ||
| 20 | STSetType - Builds ST for a particular spectral transformation. | ||
| 21 | |||
| 22 | Logically Collective | ||
| 23 | |||
| 24 | Input Parameters: | ||
| 25 | + st - the spectral transformation context. | ||
| 26 | - type - a known type | ||
| 27 | |||
| 28 | Options Database Key: | ||
| 29 | . -st_type <type> - Sets ST type | ||
| 30 | |||
| 31 | Use -help for a list of available transformations | ||
| 32 | |||
| 33 | Notes: | ||
| 34 | See "slepc/include/slepcst.h" for available transformations | ||
| 35 | |||
| 36 | Normally, it is best to use the EPSSetFromOptions() command and | ||
| 37 | then set the ST type from the options database rather than by using | ||
| 38 | this routine. Using the options database provides the user with | ||
| 39 | maximum flexibility in evaluating the many different transformations. | ||
| 40 | |||
| 41 | Level: beginner | ||
| 42 | |||
| 43 | .seealso: EPSSetType() | ||
| 44 | |||
| 45 | @*/ | ||
| 46 | 12244 | PetscErrorCode STSetType(ST st,STType type) | |
| 47 | { | ||
| 48 | 12244 | PetscErrorCode (*r)(ST); | |
| 49 | 12244 | PetscBool match; | |
| 50 | |||
| 51 |
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12244 | PetscFunctionBegin; |
| 52 |
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12244 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 53 |
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12244 | PetscAssertPointer(type,2); |
| 54 | |||
| 55 |
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12244 | PetscCall(PetscObjectTypeCompare((PetscObject)st,type,&match)); |
| 56 |
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12244 | if (match) PetscFunctionReturn(PETSC_SUCCESS); |
| 57 |
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11347 | STCheckNotSeized(st,1); |
| 58 | |||
| 59 |
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11347 | PetscCall(PetscFunctionListFind(STList,type,&r)); |
| 60 |
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11347 | PetscCheck(r,PetscObjectComm((PetscObject)st),PETSC_ERR_ARG_UNKNOWN_TYPE,"Unable to find requested ST type %s",type); |
| 61 | |||
| 62 |
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11347 | PetscTryTypeMethod(st,destroy); |
| 63 |
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11347 | PetscCall(PetscMemzero(st->ops,sizeof(struct _STOps))); |
| 64 | |||
| 65 | 11347 | st->state = ST_STATE_INITIAL; | |
| 66 | 11347 | st->opready = PETSC_FALSE; | |
| 67 |
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11347 | PetscCall(PetscObjectChangeTypeName((PetscObject)st,type)); |
| 68 |
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11347 | PetscCall((*r)(st)); |
| 69 |
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2206 | PetscFunctionReturn(PETSC_SUCCESS); |
| 70 | } | ||
| 71 | |||
| 72 | /*@ | ||
| 73 | STGetType - Gets the ST type name (as a string) from the ST context. | ||
| 74 | |||
| 75 | Not Collective | ||
| 76 | |||
| 77 | Input Parameter: | ||
| 78 | . st - the spectral transformation context | ||
| 79 | |||
| 80 | Output Parameter: | ||
| 81 | . type - name of the spectral transformation | ||
| 82 | |||
| 83 | Level: intermediate | ||
| 84 | |||
| 85 | .seealso: STSetType() | ||
| 86 | |||
| 87 | @*/ | ||
| 88 | 900 | PetscErrorCode STGetType(ST st,STType *type) | |
| 89 | { | ||
| 90 |
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900 | PetscFunctionBegin; |
| 91 |
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900 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 92 |
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900 | PetscAssertPointer(type,2); |
| 93 | 900 | *type = ((PetscObject)st)->type_name; | |
| 94 |
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900 | PetscFunctionReturn(PETSC_SUCCESS); |
| 95 | } | ||
| 96 | |||
| 97 | /*@ | ||
| 98 | STSetFromOptions - Sets ST options from the options database. | ||
| 99 | This routine must be called before STSetUp() if the user is to be | ||
| 100 | allowed to set the type of transformation. | ||
| 101 | |||
| 102 | Collective | ||
| 103 | |||
| 104 | Input Parameter: | ||
| 105 | . st - the spectral transformation context | ||
| 106 | |||
| 107 | Level: beginner | ||
| 108 | |||
| 109 | .seealso: STSetOptionsPrefix() | ||
| 110 | @*/ | ||
| 111 | 8763 | PetscErrorCode STSetFromOptions(ST st) | |
| 112 | { | ||
| 113 | 8763 | PetscScalar s; | |
| 114 | 8763 | char type[256]; | |
| 115 | 8763 | PetscBool flg,bval; | |
| 116 | 8763 | STMatMode mode; | |
| 117 | 8763 | MatStructure mstr; | |
| 118 | |||
| 119 |
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8763 | PetscFunctionBegin; |
| 120 |
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8763 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 121 |
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8763 | PetscCall(STRegisterAll()); |
| 122 |
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26289 | PetscObjectOptionsBegin((PetscObject)st); |
| 123 |
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17297 | PetscCall(PetscOptionsFList("-st_type","Spectral transformation","STSetType",STList,(char*)(((PetscObject)st)->type_name?((PetscObject)st)->type_name:STSHIFT),type,sizeof(type),&flg)); |
| 124 |
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8763 | if (flg) PetscCall(STSetType(st,type)); |
| 125 |
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6939 | else if (!((PetscObject)st)->type_name) PetscCall(STSetType(st,STSHIFT)); |
| 126 | |||
| 127 |
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8763 | PetscCall(PetscOptionsScalar("-st_shift","Value of the shift","STSetShift",st->sigma,&s,&flg)); |
| 128 |
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8763 | if (flg) PetscCall(STSetShift(st,s)); |
| 129 | |||
| 130 |
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8763 | PetscCall(PetscOptionsEnum("-st_matmode","Matrix mode for transformed matrices","STSetMatMode",STMatModes,(PetscEnum)st->matmode,(PetscEnum*)&mode,&flg)); |
| 131 |
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8763 | if (flg) PetscCall(STSetMatMode(st,mode)); |
| 132 | |||
| 133 |
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8763 | PetscCall(PetscOptionsEnum("-st_matstructure","Relation of the sparsity pattern of the matrices","STSetMatStructure",MatStructures,(PetscEnum)st->str,(PetscEnum*)&mstr,&flg)); |
| 134 |
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8763 | if (flg) PetscCall(STSetMatStructure(st,mstr)); |
| 135 | |||
| 136 |
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8763 | PetscCall(PetscOptionsBool("-st_transform","Whether transformed matrices are computed or not","STSetTransform",st->transform,&bval,&flg)); |
| 137 |
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8763 | if (flg) PetscCall(STSetTransform(st,bval)); |
| 138 | |||
| 139 |
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8763 | PetscTryTypeMethod(st,setfromoptions,PetscOptionsObject); |
| 140 |
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8763 | PetscCall(PetscObjectProcessOptionsHandlers((PetscObject)st,PetscOptionsObject)); |
| 141 |
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8763 | PetscOptionsEnd(); |
| 142 | |||
| 143 |
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8763 | if (st->usesksp) { |
| 144 |
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8437 | PetscCall(STSetDefaultKSP(st)); |
| 145 |
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8437 | PetscCall(KSPSetFromOptions(st->ksp)); |
| 146 | } | ||
| 147 |
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1703 | PetscFunctionReturn(PETSC_SUCCESS); |
| 148 | } | ||
| 149 | |||
| 150 | /*@ | ||
| 151 | STSetMatStructure - Sets an internal MatStructure attribute to | ||
| 152 | indicate which is the relation of the sparsity pattern of all ST matrices. | ||
| 153 | |||
| 154 | Logically Collective | ||
| 155 | |||
| 156 | Input Parameters: | ||
| 157 | + st - the spectral transformation context | ||
| 158 | - str - either SAME_NONZERO_PATTERN, DIFFERENT_NONZERO_PATTERN, | ||
| 159 | SUBSET_NONZERO_PATTERN, or UNKNOWN_NONZERO_PATTERN | ||
| 160 | |||
| 161 | Options Database Key: | ||
| 162 | . -st_matstructure <str> - Indicates the structure flag, where <str> is one | ||
| 163 | of 'same' (matrices have the same nonzero pattern), 'different' | ||
| 164 | (different nonzero pattern), 'subset' (pattern is a subset of the | ||
| 165 | first one), or 'unknown'. | ||
| 166 | |||
| 167 | Notes: | ||
| 168 | If the sparsity pattern of the second matrix is equal or a subset of the | ||
| 169 | pattern of the first matrix then it is recommended to set this attribute | ||
| 170 | for efficiency reasons (in particular, for internal MatAXPY() operations). | ||
| 171 | If not set, the default is UNKNOWN_NONZERO_PATTERN, in which case the patterns | ||
| 172 | will be compared to determine if they are equal. | ||
| 173 | |||
| 174 | This function has no effect in the case of standard eigenproblems. | ||
| 175 | |||
| 176 | In case of polynomial eigenproblems, the flag applies to all matrices | ||
| 177 | relative to the first one. | ||
| 178 | |||
| 179 | Level: advanced | ||
| 180 | |||
| 181 | .seealso: STSetMatrices(), MatAXPY() | ||
| 182 | @*/ | ||
| 183 | 24 | PetscErrorCode STSetMatStructure(ST st,MatStructure str) | |
| 184 | { | ||
| 185 |
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24 | PetscFunctionBegin; |
| 186 |
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24 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 187 |
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24 | PetscValidLogicalCollectiveEnum(st,str,2); |
| 188 |
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24 | switch (str) { |
| 189 | 24 | case SAME_NONZERO_PATTERN: | |
| 190 | case DIFFERENT_NONZERO_PATTERN: | ||
| 191 | case SUBSET_NONZERO_PATTERN: | ||
| 192 | case UNKNOWN_NONZERO_PATTERN: | ||
| 193 | 24 | st->str = str; | |
| 194 | 24 | break; | |
| 195 | ✗ | default: | |
| 196 | ✗ | SETERRQ(PetscObjectComm((PetscObject)st),PETSC_ERR_ARG_OUTOFRANGE,"Invalid matrix structure flag"); | |
| 197 | } | ||
| 198 |
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24 | PetscFunctionReturn(PETSC_SUCCESS); |
| 199 | } | ||
| 200 | |||
| 201 | /*@ | ||
| 202 | STGetMatStructure - Gets the internal MatStructure attribute to | ||
| 203 | indicate which is the relation of the sparsity pattern of the matrices. | ||
| 204 | |||
| 205 | Not Collective | ||
| 206 | |||
| 207 | Input Parameters: | ||
| 208 | . st - the spectral transformation context | ||
| 209 | |||
| 210 | Output Parameters: | ||
| 211 | . str - either SAME_NONZERO_PATTERN, DIFFERENT_NONZERO_PATTERN, | ||
| 212 | SUBSET_NONZERO_PATTERN, or UNKNOWN_NONZERO_PATTERN | ||
| 213 | |||
| 214 | Level: advanced | ||
| 215 | |||
| 216 | .seealso: STSetMatStructure(), STSetMatrices(), MatAXPY() | ||
| 217 | @*/ | ||
| 218 | 7573 | PetscErrorCode STGetMatStructure(ST st,MatStructure *str) | |
| 219 | { | ||
| 220 |
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7573 | PetscFunctionBegin; |
| 221 |
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7573 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 222 |
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7573 | PetscAssertPointer(str,2); |
| 223 | 7573 | *str = st->str; | |
| 224 |
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7573 | PetscFunctionReturn(PETSC_SUCCESS); |
| 225 | } | ||
| 226 | |||
| 227 | /*@ | ||
| 228 | STSetMatMode - Sets a flag to indicate how the transformed matrices are | ||
| 229 | being stored in the spectral transformations. | ||
| 230 | |||
| 231 | Logically Collective | ||
| 232 | |||
| 233 | Input Parameters: | ||
| 234 | + st - the spectral transformation context | ||
| 235 | - mode - the mode flag, one of ST_MATMODE_COPY, | ||
| 236 | ST_MATMODE_INPLACE, or ST_MATMODE_SHELL | ||
| 237 | |||
| 238 | Options Database Key: | ||
| 239 | . -st_matmode <mode> - Indicates the mode flag, where <mode> is one of | ||
| 240 | 'copy', 'inplace', 'shell' (see explanation below). | ||
| 241 | |||
| 242 | Notes: | ||
| 243 | By default (ST_MATMODE_COPY), a copy of matrix A is made and then | ||
| 244 | this copy is modified explicitly, e.g. A <- (A - s B). | ||
| 245 | |||
| 246 | With ST_MATMODE_INPLACE, the original matrix A is modified at STSetUp() | ||
| 247 | and changes are reverted at the end of the computations. With respect to | ||
| 248 | the previous one, this mode avoids a copy of matrix A. However, a | ||
| 249 | drawback is that the recovered matrix might be slightly different | ||
| 250 | from the original one (due to roundoff). | ||
| 251 | |||
| 252 | With ST_MATMODE_SHELL, the solver works with an implicit shell | ||
| 253 | matrix that represents the shifted matrix. This mode is the most efficient | ||
| 254 | in creating the shifted matrix but it places serious limitations to the | ||
| 255 | linear solves performed in each iteration of the eigensolver (typically, | ||
| 256 | only iterative solvers with Jacobi preconditioning can be used). | ||
| 257 | |||
| 258 | In the two first modes the efficiency of the computation | ||
| 259 | can be controlled with STSetMatStructure(). | ||
| 260 | |||
| 261 | Level: intermediate | ||
| 262 | |||
| 263 | .seealso: STSetMatrices(), STSetMatStructure(), STGetMatMode(), STMatMode | ||
| 264 | @*/ | ||
| 265 | 736 | PetscErrorCode STSetMatMode(ST st,STMatMode mode) | |
| 266 | { | ||
| 267 |
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736 | PetscFunctionBegin; |
| 268 |
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736 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 269 |
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736 | PetscValidLogicalCollectiveEnum(st,mode,2); |
| 270 |
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736 | if (st->matmode != mode) { |
| 271 |
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666 | STCheckNotSeized(st,1); |
| 272 | 666 | st->matmode = mode; | |
| 273 | 666 | st->state = ST_STATE_INITIAL; | |
| 274 | 666 | st->opready = PETSC_FALSE; | |
| 275 | } | ||
| 276 |
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736 | PetscFunctionReturn(PETSC_SUCCESS); |
| 277 | } | ||
| 278 | |||
| 279 | /*@ | ||
| 280 | STGetMatMode - Gets a flag that indicates how the transformed matrices | ||
| 281 | are stored in spectral transformations. | ||
| 282 | |||
| 283 | Not Collective | ||
| 284 | |||
| 285 | Input Parameter: | ||
| 286 | . st - the spectral transformation context | ||
| 287 | |||
| 288 | Output Parameter: | ||
| 289 | . mode - the mode flag | ||
| 290 | |||
| 291 | Level: intermediate | ||
| 292 | |||
| 293 | .seealso: STSetMatMode(), STMatMode | ||
| 294 | @*/ | ||
| 295 | 9625 | PetscErrorCode STGetMatMode(ST st,STMatMode *mode) | |
| 296 | { | ||
| 297 |
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9625 | PetscFunctionBegin; |
| 298 |
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9625 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 299 |
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9625 | PetscAssertPointer(mode,2); |
| 300 | 9625 | *mode = st->matmode; | |
| 301 |
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9625 | PetscFunctionReturn(PETSC_SUCCESS); |
| 302 | } | ||
| 303 | |||
| 304 | /*@ | ||
| 305 | STSetTransform - Sets a flag to indicate whether the transformed matrices are | ||
| 306 | computed or not. | ||
| 307 | |||
| 308 | Logically Collective | ||
| 309 | |||
| 310 | Input Parameters: | ||
| 311 | + st - the spectral transformation context | ||
| 312 | - flg - the boolean flag | ||
| 313 | |||
| 314 | Options Database Key: | ||
| 315 | . -st_transform <bool> - Activate/deactivate the computation of matrices. | ||
| 316 | |||
| 317 | Notes: | ||
| 318 | This flag is intended for the case of polynomial eigenproblems solved | ||
| 319 | via linearization. If this flag is off (default) the spectral transformation | ||
| 320 | is applied to the linearization (handled by the eigensolver), otherwise | ||
| 321 | it is applied to the original problem. | ||
| 322 | |||
| 323 | Level: developer | ||
| 324 | |||
| 325 | .seealso: STMatSolve(), STMatMult(), STSetMatStructure(), STGetTransform() | ||
| 326 | @*/ | ||
| 327 | 11027 | PetscErrorCode STSetTransform(ST st,PetscBool flg) | |
| 328 | { | ||
| 329 |
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11027 | PetscFunctionBegin; |
| 330 |
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11027 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 331 |
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11027 | PetscValidLogicalCollectiveBool(st,flg,2); |
| 332 |
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11027 | if (st->transform != flg) { |
| 333 | 7641 | st->transform = flg; | |
| 334 | 7641 | st->state = ST_STATE_INITIAL; | |
| 335 | 7641 | st->opready = PETSC_FALSE; | |
| 336 | } | ||
| 337 |
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11027 | PetscFunctionReturn(PETSC_SUCCESS); |
| 338 | } | ||
| 339 | |||
| 340 | /*@ | ||
| 341 | STGetTransform - Gets a flag that indicates whether the transformed | ||
| 342 | matrices are computed or not. | ||
| 343 | |||
| 344 | Not Collective | ||
| 345 | |||
| 346 | Input Parameter: | ||
| 347 | . st - the spectral transformation context | ||
| 348 | |||
| 349 | Output Parameter: | ||
| 350 | . flg - the flag | ||
| 351 | |||
| 352 | Level: developer | ||
| 353 | |||
| 354 | .seealso: STSetTransform() | ||
| 355 | @*/ | ||
| 356 | 123297 | PetscErrorCode STGetTransform(ST st,PetscBool *flg) | |
| 357 | { | ||
| 358 |
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123297 | PetscFunctionBegin; |
| 359 |
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123297 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 360 |
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123297 | PetscAssertPointer(flg,2); |
| 361 | 123297 | *flg = st->transform; | |
| 362 |
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123297 | PetscFunctionReturn(PETSC_SUCCESS); |
| 363 | } | ||
| 364 | |||
| 365 | /*@ | ||
| 366 | STSetStructured - Sets a flag to indicate that the application of the | ||
| 367 | operator must be done taking into account its structure. | ||
| 368 | |||
| 369 | Logically Collective | ||
| 370 | |||
| 371 | Input Parameters: | ||
| 372 | + st - the spectral transformation context | ||
| 373 | - flg - the boolean flag | ||
| 374 | |||
| 375 | Note: | ||
| 376 | This flag is intended for the case of structured eigenproblems. It is set | ||
| 377 | internally by the solver, the user should not modify its value. | ||
| 378 | |||
| 379 | Level: developer | ||
| 380 | |||
| 381 | .seealso: STApply(), STGetStructured() | ||
| 382 | @*/ | ||
| 383 | 10111 | PetscErrorCode STSetStructured(ST st,PetscBool flg) | |
| 384 | { | ||
| 385 |
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10111 | PetscFunctionBegin; |
| 386 |
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10111 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 387 |
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10111 | PetscValidLogicalCollectiveBool(st,flg,2); |
| 388 |
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10111 | if (st->structured != flg) { |
| 389 | 334 | st->structured = flg; | |
| 390 | 334 | st->state = ST_STATE_INITIAL; | |
| 391 | 334 | st->opready = PETSC_FALSE; | |
| 392 | } | ||
| 393 |
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10111 | PetscFunctionReturn(PETSC_SUCCESS); |
| 394 | } | ||
| 395 | |||
| 396 | /*@ | ||
| 397 | STGetStructured - Gets a flag that indicates if the application of the | ||
| 398 | operator is done using its structure. | ||
| 399 | |||
| 400 | Not Collective | ||
| 401 | |||
| 402 | Input Parameter: | ||
| 403 | . st - the spectral transformation context | ||
| 404 | |||
| 405 | Output Parameter: | ||
| 406 | . flg - the flag | ||
| 407 | |||
| 408 | Level: developer | ||
| 409 | |||
| 410 | .seealso: STSetStructured() | ||
| 411 | @*/ | ||
| 412 | ✗ | PetscErrorCode STGetStructured(ST st,PetscBool *flg) | |
| 413 | { | ||
| 414 | ✗ | PetscFunctionBegin; | |
| 415 | ✗ | PetscValidHeaderSpecific(st,ST_CLASSID,1); | |
| 416 | ✗ | PetscAssertPointer(flg,2); | |
| 417 | ✗ | *flg = st->structured; | |
| 418 | ✗ | PetscFunctionReturn(PETSC_SUCCESS); | |
| 419 | } | ||
| 420 |