| 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 | Basic RG routines | ||
| 12 | */ | ||
| 13 | |||
| 14 | #include <slepc/private/rgimpl.h> /*I "slepcrg.h" I*/ | ||
| 15 | |||
| 16 | PetscFunctionList RGList = NULL; | ||
| 17 | PetscBool RGRegisterAllCalled = PETSC_FALSE; | ||
| 18 | PetscClassId RG_CLASSID = 0; | ||
| 19 | static PetscBool RGPackageInitialized = PETSC_FALSE; | ||
| 20 | |||
| 21 | /*@C | ||
| 22 | RGFinalizePackage - This function destroys everything in the SLEPc interface | ||
| 23 | to the `RG` package. It is called from `SlepcFinalize()`. | ||
| 24 | |||
| 25 | Level: developer | ||
| 26 | |||
| 27 | .seealso: [](sec:rg), `SlepcFinalize()`, `BVInitializePackage()` | ||
| 28 | @*/ | ||
| 29 | 9252 | PetscErrorCode RGFinalizePackage(void) | |
| 30 | { | ||
| 31 |
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9252 | PetscFunctionBegin; |
| 32 |
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9252 | PetscCall(PetscFunctionListDestroy(&RGList)); |
| 33 | 9252 | RGPackageInitialized = PETSC_FALSE; | |
| 34 | 9252 | RGRegisterAllCalled = PETSC_FALSE; | |
| 35 |
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9252 | PetscFunctionReturn(PETSC_SUCCESS); |
| 36 | } | ||
| 37 | |||
| 38 | /*@C | ||
| 39 | RGInitializePackage - This function initializes everything in the `RG` package. | ||
| 40 | It is called from `PetscDLLibraryRegister_slepc()` when using dynamic libraries, and | ||
| 41 | on the first call to `RGCreate()` when using shared or static libraries. | ||
| 42 | |||
| 43 | Note: | ||
| 44 | This function never needs to be called by SLEPc users. | ||
| 45 | |||
| 46 | Level: developer | ||
| 47 | |||
| 48 | .seealso: [](sec:rg), `RG`, `SlepcInitialize()`, `RGFinalizePackage()` | ||
| 49 | @*/ | ||
| 50 | 47916 | PetscErrorCode RGInitializePackage(void) | |
| 51 | { | ||
| 52 | 47916 | char logList[256]; | |
| 53 | 47916 | PetscBool opt,pkg; | |
| 54 | 47916 | PetscClassId classids[1]; | |
| 55 | |||
| 56 |
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47916 | PetscFunctionBegin; |
| 57 |
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47916 | if (RGPackageInitialized) PetscFunctionReturn(PETSC_SUCCESS); |
| 58 | 9252 | RGPackageInitialized = PETSC_TRUE; | |
| 59 | /* Register Classes */ | ||
| 60 |
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9252 | PetscCall(PetscClassIdRegister("Region",&RG_CLASSID)); |
| 61 | /* Register Constructors */ | ||
| 62 |
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9252 | PetscCall(RGRegisterAll()); |
| 63 | /* Process Info */ | ||
| 64 | 9252 | classids[0] = RG_CLASSID; | |
| 65 |
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9252 | PetscCall(PetscInfoProcessClass("rg",1,&classids[0])); |
| 66 | /* Process summary exclusions */ | ||
| 67 |
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9252 | PetscCall(PetscOptionsGetString(NULL,NULL,"-log_exclude",logList,sizeof(logList),&opt)); |
| 68 |
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9252 | if (opt) { |
| 69 |
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84 | PetscCall(PetscStrInList("rg",logList,',',&pkg)); |
| 70 |
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84 | if (pkg) PetscCall(PetscLogEventDeactivateClass(RG_CLASSID)); |
| 71 | } | ||
| 72 | /* Register package finalizer */ | ||
| 73 |
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9252 | PetscCall(PetscRegisterFinalize(RGFinalizePackage)); |
| 74 |
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1799 | PetscFunctionReturn(PETSC_SUCCESS); |
| 75 | } | ||
| 76 | |||
| 77 | /*@ | ||
| 78 | RGCreate - Creates an `RG` context. | ||
| 79 | |||
| 80 | Collective | ||
| 81 | |||
| 82 | Input Parameter: | ||
| 83 | . comm - MPI communicator | ||
| 84 | |||
| 85 | Output Parameter: | ||
| 86 | . newrg - location to put the `RG` context | ||
| 87 | |||
| 88 | Level: beginner | ||
| 89 | |||
| 90 | .seealso: [](sec:rg), `RG`, `RGDestroy()` | ||
| 91 | @*/ | ||
| 92 | 10861 | PetscErrorCode RGCreate(MPI_Comm comm,RG *newrg) | |
| 93 | { | ||
| 94 | 10861 | RG rg; | |
| 95 | |||
| 96 |
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10861 | PetscFunctionBegin; |
| 97 |
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10861 | PetscAssertPointer(newrg,2); |
| 98 |
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10861 | PetscCall(RGInitializePackage()); |
| 99 |
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10861 | PetscCall(SlepcHeaderCreate(rg,RG_CLASSID,"RG","Region","RG",comm,RGDestroy,RGView)); |
| 100 | 10861 | rg->complement = PETSC_FALSE; | |
| 101 | 10861 | rg->sfactor = 1.0; | |
| 102 | 10861 | rg->osfactor = 0.0; | |
| 103 | 10861 | rg->data = NULL; | |
| 104 | |||
| 105 | 10861 | *newrg = rg; | |
| 106 |
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10861 | PetscFunctionReturn(PETSC_SUCCESS); |
| 107 | } | ||
| 108 | |||
| 109 | /*@ | ||
| 110 | RGSetOptionsPrefix - Sets the prefix used for searching for all | ||
| 111 | `RG` options in the database. | ||
| 112 | |||
| 113 | Logically Collective | ||
| 114 | |||
| 115 | Input Parameters: | ||
| 116 | + rg - the region context | ||
| 117 | - prefix - the prefix string to prepend to all `RG` option requests | ||
| 118 | |||
| 119 | Notes: | ||
| 120 | A hyphen (-) must NOT be given at the beginning of the prefix name. | ||
| 121 | The first character of all runtime options is AUTOMATICALLY the | ||
| 122 | hyphen. | ||
| 123 | |||
| 124 | Level: advanced | ||
| 125 | |||
| 126 | .seealso: [](sec:rg), `RGAppendOptionsPrefix()` | ||
| 127 | @*/ | ||
| 128 | 2461 | PetscErrorCode RGSetOptionsPrefix(RG rg,const char prefix[]) | |
| 129 | { | ||
| 130 |
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2461 | PetscFunctionBegin; |
| 131 |
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2461 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 132 |
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2461 | PetscCall(PetscObjectSetOptionsPrefix((PetscObject)rg,prefix)); |
| 133 |
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476 | PetscFunctionReturn(PETSC_SUCCESS); |
| 134 | } | ||
| 135 | |||
| 136 | /*@ | ||
| 137 | RGAppendOptionsPrefix - Appends to the prefix used for searching for all | ||
| 138 | `RG` options in the database. | ||
| 139 | |||
| 140 | Logically Collective | ||
| 141 | |||
| 142 | Input Parameters: | ||
| 143 | + rg - the region context | ||
| 144 | - prefix - the prefix string to prepend to all `RG` option requests | ||
| 145 | |||
| 146 | Notes: | ||
| 147 | A hyphen (-) must NOT be given at the beginning of the prefix name. | ||
| 148 | The first character of all runtime options is AUTOMATICALLY the hyphen. | ||
| 149 | |||
| 150 | Level: advanced | ||
| 151 | |||
| 152 | .seealso: [](sec:rg), `RGSetOptionsPrefix()` | ||
| 153 | @*/ | ||
| 154 | 1982 | PetscErrorCode RGAppendOptionsPrefix(RG rg,const char prefix[]) | |
| 155 | { | ||
| 156 |
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1982 | PetscFunctionBegin; |
| 157 |
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1982 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 158 |
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1982 | PetscCall(PetscObjectAppendOptionsPrefix((PetscObject)rg,prefix)); |
| 159 |
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394 | PetscFunctionReturn(PETSC_SUCCESS); |
| 160 | } | ||
| 161 | |||
| 162 | /*@ | ||
| 163 | RGGetOptionsPrefix - Gets the prefix used for searching for all | ||
| 164 | `RG` options in the database. | ||
| 165 | |||
| 166 | Not Collective | ||
| 167 | |||
| 168 | Input Parameter: | ||
| 169 | . rg - the region context | ||
| 170 | |||
| 171 | Output Parameter: | ||
| 172 | . prefix - pointer to the prefix string used is returned | ||
| 173 | |||
| 174 | Level: advanced | ||
| 175 | |||
| 176 | .seealso: [](sec:rg), `RGSetOptionsPrefix()`, `RGAppendOptionsPrefix()` | ||
| 177 | @*/ | ||
| 178 | ✗ | PetscErrorCode RGGetOptionsPrefix(RG rg,const char *prefix[]) | |
| 179 | { | ||
| 180 | ✗ | PetscFunctionBegin; | |
| 181 | ✗ | PetscValidHeaderSpecific(rg,RG_CLASSID,1); | |
| 182 | ✗ | PetscAssertPointer(prefix,2); | |
| 183 | ✗ | PetscCall(PetscObjectGetOptionsPrefix((PetscObject)rg,prefix)); | |
| 184 | ✗ | PetscFunctionReturn(PETSC_SUCCESS); | |
| 185 | } | ||
| 186 | |||
| 187 | /*@ | ||
| 188 | RGSetType - Selects the type for the `RG` object. | ||
| 189 | |||
| 190 | Logically Collective | ||
| 191 | |||
| 192 | Input Parameters: | ||
| 193 | + rg - the region context | ||
| 194 | - type - a known type | ||
| 195 | |||
| 196 | Options Database Key: | ||
| 197 | . -rg_type type - sets `RG` type | ||
| 198 | |||
| 199 | Level: beginner | ||
| 200 | |||
| 201 | .seealso: [](sec:rg), `RGGetType()` | ||
| 202 | @*/ | ||
| 203 | 11620 | PetscErrorCode RGSetType(RG rg,RGType type) | |
| 204 | { | ||
| 205 | 11620 | PetscErrorCode (*r)(RG); | |
| 206 | 11620 | PetscBool match; | |
| 207 | |||
| 208 |
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11620 | PetscFunctionBegin; |
| 209 |
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11620 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 210 |
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11620 | PetscAssertPointer(type,2); |
| 211 | |||
| 212 |
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11620 | PetscCall(PetscObjectTypeCompare((PetscObject)rg,type,&match)); |
| 213 |
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11620 | if (match) PetscFunctionReturn(PETSC_SUCCESS); |
| 214 | |||
| 215 |
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10987 | PetscCall(PetscFunctionListFind(RGList,type,&r)); |
| 216 |
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10987 | PetscCheck(r,PetscObjectComm((PetscObject)rg),PETSC_ERR_ARG_UNKNOWN_TYPE,"Unable to find requested RG type %s",type); |
| 217 | |||
| 218 |
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10987 | PetscTryTypeMethod(rg,destroy); |
| 219 |
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10987 | PetscCall(PetscMemzero(rg->ops,sizeof(struct _RGOps))); |
| 220 | |||
| 221 |
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10987 | PetscCall(PetscObjectChangeTypeName((PetscObject)rg,type)); |
| 222 |
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10987 | PetscCall((*r)(rg)); |
| 223 |
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2123 | PetscFunctionReturn(PETSC_SUCCESS); |
| 224 | } | ||
| 225 | |||
| 226 | /*@ | ||
| 227 | RGGetType - Gets the `RG` type name (as a string) from the `RG` context. | ||
| 228 | |||
| 229 | Not Collective | ||
| 230 | |||
| 231 | Input Parameter: | ||
| 232 | . rg - the region context | ||
| 233 | |||
| 234 | Output Parameter: | ||
| 235 | . type - name of the region | ||
| 236 | |||
| 237 | Note: | ||
| 238 | `type` should not be retained for later use as it will be an invalid pointer | ||
| 239 | if the `RGType` of `rg` is changed. | ||
| 240 | |||
| 241 | Level: beginner | ||
| 242 | |||
| 243 | .seealso: [](sec:rg), `RGSetType()`, `PetscObjectTypeCompare()`, `PetscObjectTypeCompareAny()` | ||
| 244 | @*/ | ||
| 245 | 50 | PetscErrorCode RGGetType(RG rg,RGType *type) | |
| 246 | { | ||
| 247 |
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50 | PetscFunctionBegin; |
| 248 |
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50 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 249 |
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50 | PetscAssertPointer(type,2); |
| 250 | 50 | *type = ((PetscObject)rg)->type_name; | |
| 251 |
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50 | PetscFunctionReturn(PETSC_SUCCESS); |
| 252 | } | ||
| 253 | |||
| 254 | /*@ | ||
| 255 | RGSetFromOptions - Sets `RG` options from the options database. | ||
| 256 | |||
| 257 | Collective | ||
| 258 | |||
| 259 | Input Parameter: | ||
| 260 | . rg - the region context | ||
| 261 | |||
| 262 | Note: | ||
| 263 | To see all options, run your program with the `-help` option. | ||
| 264 | |||
| 265 | Level: beginner | ||
| 266 | |||
| 267 | .seealso: [](sec:rg), `RGSetOptionsPrefix()` | ||
| 268 | @*/ | ||
| 269 | 10873 | PetscErrorCode RGSetFromOptions(RG rg) | |
| 270 | { | ||
| 271 | 10873 | char type[256]; | |
| 272 | 10873 | PetscBool flg; | |
| 273 | 10873 | PetscReal sfactor; | |
| 274 | |||
| 275 |
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10873 | PetscFunctionBegin; |
| 276 |
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10873 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 277 |
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10873 | PetscCall(RGRegisterAll()); |
| 278 |
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32619 | PetscObjectOptionsBegin((PetscObject)rg); |
| 279 |
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12067 | PetscCall(PetscOptionsFList("-rg_type","Region type","RGSetType",RGList,(char*)(((PetscObject)rg)->type_name?((PetscObject)rg)->type_name:RGINTERVAL),type,sizeof(type),&flg)); |
| 280 |
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10873 | if (flg) PetscCall(RGSetType(rg,type)); |
| 281 |
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9737 | else if (!((PetscObject)rg)->type_name) PetscCall(RGSetType(rg,RGINTERVAL)); |
| 282 | |||
| 283 |
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10873 | PetscCall(PetscOptionsBool("-rg_complement","Whether region is complemented or not","RGSetComplement",rg->complement,&rg->complement,NULL)); |
| 284 | |||
| 285 |
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10873 | PetscCall(PetscOptionsReal("-rg_scale","Scaling factor","RGSetScale",1.0,&sfactor,&flg)); |
| 286 |
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10873 | if (flg) PetscCall(RGSetScale(rg,sfactor)); |
| 287 | |||
| 288 |
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10873 | PetscTryTypeMethod(rg,setfromoptions,PetscOptionsObject); |
| 289 |
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10873 | PetscCall(PetscObjectProcessOptionsHandlers((PetscObject)rg,PetscOptionsObject)); |
| 290 |
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10873 | PetscOptionsEnd(); |
| 291 |
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10873 | PetscFunctionReturn(PETSC_SUCCESS); |
| 292 | } | ||
| 293 | |||
| 294 | /*@ | ||
| 295 | RGView - Prints the `RG` data structure. | ||
| 296 | |||
| 297 | Collective | ||
| 298 | |||
| 299 | Input Parameters: | ||
| 300 | + rg - the region context | ||
| 301 | - viewer - optional visualization context | ||
| 302 | |||
| 303 | Notes: | ||
| 304 | The available visualization contexts include | ||
| 305 | + `PETSC_VIEWER_STDOUT_SELF` - standard output (default) | ||
| 306 | - `PETSC_VIEWER_STDOUT_WORLD` - synchronized standard output where only the | ||
| 307 | first process opens the file; all other processes send their data to the | ||
| 308 | first one to print | ||
| 309 | |||
| 310 | The user can open an alternative visualization context with `PetscViewerASCIIOpen()` | ||
| 311 | to output to a specified file. | ||
| 312 | |||
| 313 | Use `RGViewFromOptions()` to allow the user to select many different `PetscViewerType` | ||
| 314 | and formats from the options database. | ||
| 315 | |||
| 316 | Level: beginner | ||
| 317 | |||
| 318 | .seealso: [](sec:rg), `RGCreate()`, `RGViewFromOptions()` | ||
| 319 | @*/ | ||
| 320 | 209 | PetscErrorCode RGView(RG rg,PetscViewer viewer) | |
| 321 | { | ||
| 322 | 209 | PetscBool isdraw,isascii; | |
| 323 | |||
| 324 |
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209 | PetscFunctionBegin; |
| 325 |
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209 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 326 |
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209 | if (!viewer) PetscCall(PetscViewerASCIIGetStdout(PetscObjectComm((PetscObject)rg),&viewer)); |
| 327 |
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209 | PetscValidHeaderSpecific(viewer,PETSC_VIEWER_CLASSID,2); |
| 328 |
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209 | PetscCheckSameComm(rg,1,viewer,2); |
| 329 |
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209 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERDRAW,&isdraw)); |
| 330 |
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209 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&isascii)); |
| 331 |
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209 | if (isascii) { |
| 332 |
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169 | PetscCall(PetscObjectPrintClassNamePrefixType((PetscObject)rg,viewer)); |
| 333 |
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169 | PetscCall(PetscViewerASCIIPushTab(viewer)); |
| 334 |
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169 | PetscTryTypeMethod(rg,view,viewer); |
| 335 |
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169 | PetscCall(PetscViewerASCIIPopTab(viewer)); |
| 336 |
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169 | if (rg->complement) PetscCall(PetscViewerASCIIPrintf(viewer," selected region is the complement of the specified one\n")); |
| 337 |
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169 | if (rg->sfactor!=1.0) PetscCall(PetscViewerASCIIPrintf(viewer," scaling factor = %g\n",(double)rg->sfactor)); |
| 338 |
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40 | } else if (isdraw) PetscTryTypeMethod(rg,view,viewer); |
| 339 |
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37 | PetscFunctionReturn(PETSC_SUCCESS); |
| 340 | } | ||
| 341 | |||
| 342 | /*@ | ||
| 343 | RGViewFromOptions - View (print) an `RG` object based on values in the options database. | ||
| 344 | |||
| 345 | Collective | ||
| 346 | |||
| 347 | Input Parameters: | ||
| 348 | + rg - the region context | ||
| 349 | . obj - optional object that provides the options prefix used to query the options database | ||
| 350 | - name - command line option | ||
| 351 | |||
| 352 | Level: intermediate | ||
| 353 | |||
| 354 | .seealso: [](sec:rg), `RGView()`, `RGCreate()`, `PetscObjectViewFromOptions()` | ||
| 355 | @*/ | ||
| 356 | 13827 | PetscErrorCode RGViewFromOptions(RG rg,PetscObject obj,const char name[]) | |
| 357 | { | ||
| 358 |
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13827 | PetscFunctionBegin; |
| 359 |
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13827 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 360 |
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13827 | PetscCall(PetscObjectViewFromOptions((PetscObject)rg,obj,name)); |
| 361 |
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2666 | PetscFunctionReturn(PETSC_SUCCESS); |
| 362 | } | ||
| 363 | |||
| 364 | /*@ | ||
| 365 | RGIsTrivial - Whether it is the trivial region (whole complex plane). | ||
| 366 | |||
| 367 | Not Collective | ||
| 368 | |||
| 369 | Input Parameter: | ||
| 370 | . rg - the region context | ||
| 371 | |||
| 372 | Output Parameter: | ||
| 373 | . trivial - true if the region is equal to the whole complex plane, e.g., | ||
| 374 | an interval region with all four endpoints unbounded or an | ||
| 375 | ellipse with infinite radius. | ||
| 376 | |||
| 377 | Level: beginner | ||
| 378 | |||
| 379 | .seealso: [](sec:rg), `RGCheckInside()` | ||
| 380 | @*/ | ||
| 381 | 88655 | PetscErrorCode RGIsTrivial(RG rg,PetscBool *trivial) | |
| 382 | { | ||
| 383 |
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88655 | PetscFunctionBegin; |
| 384 |
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88655 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 385 |
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88655 | PetscValidType(rg,1); |
| 386 |
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88655 | PetscAssertPointer(trivial,2); |
| 387 | 88655 | *trivial = PETSC_FALSE; | |
| 388 |
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88655 | PetscTryTypeMethod(rg,istrivial,trivial); |
| 389 |
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17277 | PetscFunctionReturn(PETSC_SUCCESS); |
| 390 | } | ||
| 391 | |||
| 392 | /*@ | ||
| 393 | RGCheckInside - Determines if a set of given points are inside the region or not. | ||
| 394 | |||
| 395 | Not Collective | ||
| 396 | |||
| 397 | Input Parameters: | ||
| 398 | + rg - the region context | ||
| 399 | . n - number of points to check | ||
| 400 | . ar - array of real parts | ||
| 401 | - ai - array of imaginary parts | ||
| 402 | |||
| 403 | Output Parameter: | ||
| 404 | . inside - array of results (1=inside, 0=on the contour, -1=outside) | ||
| 405 | |||
| 406 | Notes: | ||
| 407 | The point `a` is expressed as a couple of `PetscScalar` variables `ar`, `ai`. | ||
| 408 | If built with complex scalars, the point is supposed to be stored in `ar`, | ||
| 409 | otherwise `ar`, `ai` contain the real and imaginary parts, respectively. | ||
| 410 | |||
| 411 | If a scaling factor was set, the points are scaled before checking. | ||
| 412 | |||
| 413 | Level: intermediate | ||
| 414 | |||
| 415 | .seealso: [](sec:rg), `RGSetScale()`, `RGSetComplement()` | ||
| 416 | @*/ | ||
| 417 | 909026 | PetscErrorCode RGCheckInside(RG rg,PetscInt n,PetscScalar ar[],PetscScalar ai[],PetscInt inside[]) | |
| 418 | { | ||
| 419 | 909026 | PetscReal px,py; | |
| 420 | 909026 | PetscInt i; | |
| 421 | |||
| 422 |
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909026 | PetscFunctionBegin; |
| 423 |
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909026 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 424 |
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909026 | PetscValidType(rg,1); |
| 425 |
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909026 | PetscAssertPointer(ar,3); |
| 426 | #if !defined(PETSC_USE_COMPLEX) | ||
| 427 |
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336126 | PetscAssertPointer(ai,4); |
| 428 | #endif | ||
| 429 |
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909026 | PetscAssertPointer(inside,5); |
| 430 | |||
| 431 |
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2733904 | for (i=0;i<n;i++) { |
| 432 | #if defined(PETSC_USE_COMPLEX) | ||
| 433 | 1154160 | px = PetscRealPart(ar[i]); | |
| 434 | 1154160 | py = PetscImaginaryPart(ar[i]); | |
| 435 | #else | ||
| 436 | 670718 | px = ar[i]; | |
| 437 | 670718 | py = ai[i]; | |
| 438 | #endif | ||
| 439 |
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1824878 | if (PetscUnlikely(rg->sfactor != 1.0)) { |
| 440 | 20 | px /= rg->sfactor; | |
| 441 | 20 | py /= rg->sfactor; | |
| 442 | } | ||
| 443 |
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1824878 | PetscUseTypeMethod(rg,checkinside,px,py,inside+i); |
| 444 |
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1824878 | if (PetscUnlikely(rg->complement)) inside[i] = -inside[i]; |
| 445 | } | ||
| 446 |
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181275 | PetscFunctionReturn(PETSC_SUCCESS); |
| 447 | } | ||
| 448 | |||
| 449 | /*@ | ||
| 450 | RGIsAxisymmetric - Determines if the region is symmetric with respect | ||
| 451 | to the real or imaginary axis. | ||
| 452 | |||
| 453 | Not Collective | ||
| 454 | |||
| 455 | Input Parameters: | ||
| 456 | + rg - the region context | ||
| 457 | - vertical - `PETSC_TRUE` if symmetry must be checked against the vertical axis | ||
| 458 | |||
| 459 | Output Parameter: | ||
| 460 | . symm - `PETSC_TRUE` if the region is axisymmetric | ||
| 461 | |||
| 462 | Note: | ||
| 463 | If the vertical argument is true, symmetry is checked with respect to | ||
| 464 | the vertical axis, otherwise with respect to the horizontal axis. | ||
| 465 | |||
| 466 | Level: intermediate | ||
| 467 | |||
| 468 | .seealso: [](sec:rg), `RGCanUseConjugates()` | ||
| 469 | @*/ | ||
| 470 | 243 | PetscErrorCode RGIsAxisymmetric(RG rg,PetscBool vertical,PetscBool *symm) | |
| 471 | { | ||
| 472 |
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243 | PetscFunctionBegin; |
| 473 |
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243 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 474 |
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243 | PetscValidType(rg,1); |
| 475 |
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243 | PetscAssertPointer(symm,3); |
| 476 | 243 | *symm = PETSC_FALSE; | |
| 477 |
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243 | PetscTryTypeMethod(rg,isaxisymmetric,vertical,symm); |
| 478 |
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51 | PetscFunctionReturn(PETSC_SUCCESS); |
| 479 | } | ||
| 480 | |||
| 481 | /*@ | ||
| 482 | RGCanUseConjugates - Used in contour integral methods to determine whether | ||
| 483 | half of integration points can be avoided (use their conjugates). | ||
| 484 | |||
| 485 | Not Collective | ||
| 486 | |||
| 487 | Input Parameters: | ||
| 488 | + rg - the region context | ||
| 489 | - realmats - `PETSC_TRUE` if the problem matrices are real | ||
| 490 | |||
| 491 | Output Parameter: | ||
| 492 | . useconj - whether it is possible to use conjugates | ||
| 493 | |||
| 494 | Notes: | ||
| 495 | If some integration points are the conjugates of other points, then the | ||
| 496 | associated computational cost can be saved. This depends on the problem | ||
| 497 | matrices being real and also the region being symmetric with respect to | ||
| 498 | the horizontal axis. The result is false if using real arithmetic or | ||
| 499 | in the case of a flat region (height equal to zero). | ||
| 500 | |||
| 501 | Level: developer | ||
| 502 | |||
| 503 | .seealso: [](sec:rg), `RGIsAxisymmetric()` | ||
| 504 | @*/ | ||
| 505 | 557 | PetscErrorCode RGCanUseConjugates(RG rg,PetscBool realmats,PetscBool *useconj) | |
| 506 | { | ||
| 507 | #if defined(PETSC_USE_COMPLEX) | ||
| 508 | 432 | PetscReal c,d; | |
| 509 | 432 | PetscBool isaxisymm; | |
| 510 | #endif | ||
| 511 | |||
| 512 |
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557 | PetscFunctionBegin; |
| 513 |
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557 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 514 |
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557 | PetscValidType(rg,1); |
| 515 |
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557 | PetscAssertPointer(useconj,3); |
| 516 | 557 | *useconj = PETSC_FALSE; | |
| 517 | #if defined(PETSC_USE_COMPLEX) | ||
| 518 |
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432 | if (realmats) { |
| 519 |
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128 | PetscCall(RGIsAxisymmetric(rg,PETSC_FALSE,&isaxisymm)); |
| 520 |
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128 | if (isaxisymm) { |
| 521 |
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123 | PetscCall(RGComputeBoundingBox(rg,NULL,NULL,&c,&d)); |
| 522 |
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123 | if (c!=d) *useconj = PETSC_TRUE; |
| 523 | } | ||
| 524 | } | ||
| 525 | #endif | ||
| 526 |
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215 | PetscFunctionReturn(PETSC_SUCCESS); |
| 527 | } | ||
| 528 | |||
| 529 | /*@ | ||
| 530 | RGComputeContour - Computes the coordinates of several points lying on the | ||
| 531 | contour of the region. | ||
| 532 | |||
| 533 | Not Collective | ||
| 534 | |||
| 535 | Input Parameters: | ||
| 536 | + rg - the region context | ||
| 537 | - n - number of points to compute | ||
| 538 | |||
| 539 | Output Parameters: | ||
| 540 | + cr - location to store real parts | ||
| 541 | - ci - location to store imaginary parts | ||
| 542 | |||
| 543 | Note: | ||
| 544 | In real scalars, either `cr` or `ci` can be `NULL` (but not both). In complex | ||
| 545 | scalars, the coordinates are stored in `cr`, which cannot be `NULL` (`ci` is | ||
| 546 | not referenced). | ||
| 547 | |||
| 548 | Level: intermediate | ||
| 549 | |||
| 550 | .seealso: [](sec:rg), `RGComputeBoundingBox()`, `RGSetScale()` | ||
| 551 | @*/ | ||
| 552 | 1080 | PetscErrorCode RGComputeContour(RG rg,PetscInt n,PetscScalar cr[],PetscScalar ci[]) | |
| 553 | { | ||
| 554 | 1080 | PetscInt i; | |
| 555 | |||
| 556 |
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1080 | PetscFunctionBegin; |
| 557 |
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1080 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 558 |
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1080 | PetscValidType(rg,1); |
| 559 | #if defined(PETSC_USE_COMPLEX) | ||
| 560 |
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753 | PetscAssertPointer(cr,3); |
| 561 | #else | ||
| 562 |
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327 | PetscCheck(cr || ci,PetscObjectComm((PetscObject)rg),PETSC_ERR_SUP,"cr and ci cannot be NULL simultaneously"); |
| 563 | #endif | ||
| 564 |
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1080 | PetscCheck(!rg->complement,PetscObjectComm((PetscObject)rg),PETSC_ERR_SUP,"Cannot compute contour of region with complement flag set"); |
| 565 |
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1080 | PetscUseTypeMethod(rg,computecontour,n,cr,ci); |
| 566 |
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1739726 | for (i=0;i<n;i++) { |
| 567 |
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1738646 | if (cr) cr[i] *= rg->sfactor; |
| 568 |
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1738646 | if (ci) ci[i] *= rg->sfactor; |
| 569 | } | ||
| 570 |
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215 | PetscFunctionReturn(PETSC_SUCCESS); |
| 571 | } | ||
| 572 | |||
| 573 | /*@ | ||
| 574 | RGComputeBoundingBox - Determines the endpoints of a rectangle in the complex plane that | ||
| 575 | contains the region. | ||
| 576 | |||
| 577 | Not Collective | ||
| 578 | |||
| 579 | Input Parameter: | ||
| 580 | . rg - the region context | ||
| 581 | |||
| 582 | Output Parameters: | ||
| 583 | + a - left endpoint of the bounding box in the real axis | ||
| 584 | . b - right endpoint of the bounding box in the real axis | ||
| 585 | . c - bottom endpoint of the bounding box in the imaginary axis | ||
| 586 | - d - top endpoint of the bounding box in the imaginary axis | ||
| 587 | |||
| 588 | Note: | ||
| 589 | The bounding box is defined as $[a,b]\times[c,d]$. In regions that are not bounded (e.g., an | ||
| 590 | open interval) or with the complement flag set, it makes no sense to compute a bounding | ||
| 591 | box, so the return values are infinite. | ||
| 592 | |||
| 593 | Level: intermediate | ||
| 594 | |||
| 595 | .seealso: [](sec:rg), `RGComputeContour()`, `RGSetScale()`, `RGSetComplement()` | ||
| 596 | @*/ | ||
| 597 | 249 | PetscErrorCode RGComputeBoundingBox(RG rg,PetscReal *a,PetscReal *b,PetscReal *c,PetscReal *d) | |
| 598 | { | ||
| 599 |
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249 | PetscFunctionBegin; |
| 600 |
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249 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 601 |
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249 | PetscValidType(rg,1); |
| 602 | |||
| 603 |
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249 | if (rg->complement) { /* cannot compute bounding box */ |
| 604 | ✗ | if (a) *a = -PETSC_MAX_REAL; | |
| 605 | ✗ | if (b) *b = PETSC_MAX_REAL; | |
| 606 | ✗ | if (c) *c = -PETSC_MAX_REAL; | |
| 607 | ✗ | if (d) *d = PETSC_MAX_REAL; | |
| 608 | } else { | ||
| 609 |
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249 | PetscUseTypeMethod(rg,computebbox,a,b,c,d); |
| 610 |
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249 | if (a && *a!=-PETSC_MAX_REAL) *a *= rg->sfactor; |
| 611 |
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249 | if (b && *b!= PETSC_MAX_REAL) *b *= rg->sfactor; |
| 612 |
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249 | if (c && *c!=-PETSC_MAX_REAL) *c *= rg->sfactor; |
| 613 |
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249 | if (d && *d!= PETSC_MAX_REAL) *d *= rg->sfactor; |
| 614 | } | ||
| 615 |
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51 | PetscFunctionReturn(PETSC_SUCCESS); |
| 616 | } | ||
| 617 | |||
| 618 | /*@ | ||
| 619 | RGComputeQuadrature - Computes the values of the parameters used in a | ||
| 620 | quadrature rule for a contour integral around the boundary of the region. | ||
| 621 | |||
| 622 | Not Collective | ||
| 623 | |||
| 624 | Input Parameters: | ||
| 625 | + rg - the region context | ||
| 626 | . quad - the type of quadrature | ||
| 627 | - n - number of quadrature points to compute | ||
| 628 | |||
| 629 | Output Parameters: | ||
| 630 | + z - quadrature points | ||
| 631 | . zn - normalized quadrature points | ||
| 632 | - w - quadrature weights | ||
| 633 | |||
| 634 | Notes: | ||
| 635 | In complex scalars, the values returned in `z` are often the same as those | ||
| 636 | computed by `RGComputeContour()`, but this is not the case in real scalars | ||
| 637 | where all output arguments are real. | ||
| 638 | |||
| 639 | The computed values change for different quadrature rules. | ||
| 640 | |||
| 641 | Level: advanced | ||
| 642 | |||
| 643 | .seealso: [](sec:rg), `RGComputeContour()` | ||
| 644 | @*/ | ||
| 645 | 670 | PetscErrorCode RGComputeQuadrature(RG rg,RGQuadRule quad,PetscInt n,PetscScalar z[],PetscScalar zn[],PetscScalar w[]) | |
| 646 | { | ||
| 647 |
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670 | PetscFunctionBegin; |
| 648 |
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670 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 649 |
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670 | PetscValidType(rg,1); |
| 650 |
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670 | PetscAssertPointer(z,4); |
| 651 |
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670 | PetscAssertPointer(zn,5); |
| 652 |
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670 | PetscAssertPointer(w,6); |
| 653 | |||
| 654 |
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670 | PetscCall(RGComputeContour(rg,n,z,NULL)); |
| 655 |
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670 | PetscUseTypeMethod(rg,computequadrature,quad,n,z,zn,w); |
| 656 |
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139 | PetscFunctionReturn(PETSC_SUCCESS); |
| 657 | } | ||
| 658 | |||
| 659 | /*@ | ||
| 660 | RGSetComplement - Sets a flag to indicate that the region is the complement | ||
| 661 | of the specified one. | ||
| 662 | |||
| 663 | Logically Collective | ||
| 664 | |||
| 665 | Input Parameters: | ||
| 666 | + rg - the region context | ||
| 667 | - flg - the boolean flag | ||
| 668 | |||
| 669 | Options Database Key: | ||
| 670 | . -rg_complement (true|false) - activate/deactivate complementing of the region | ||
| 671 | |||
| 672 | Level: intermediate | ||
| 673 | |||
| 674 | .seealso: [](sec:rg), `RGGetComplement()` | ||
| 675 | @*/ | ||
| 676 | 10 | PetscErrorCode RGSetComplement(RG rg,PetscBool flg) | |
| 677 | { | ||
| 678 |
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10 | PetscFunctionBegin; |
| 679 |
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10 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 680 |
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10 | PetscValidLogicalCollectiveBool(rg,flg,2); |
| 681 | 10 | rg->complement = flg; | |
| 682 |
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10 | PetscFunctionReturn(PETSC_SUCCESS); |
| 683 | } | ||
| 684 | |||
| 685 | /*@ | ||
| 686 | RGGetComplement - Gets a flag that indicates whether the region | ||
| 687 | is complemented or not. | ||
| 688 | |||
| 689 | Not Collective | ||
| 690 | |||
| 691 | Input Parameter: | ||
| 692 | . rg - the region context | ||
| 693 | |||
| 694 | Output Parameter: | ||
| 695 | . flg - the flag | ||
| 696 | |||
| 697 | Level: intermediate | ||
| 698 | |||
| 699 | .seealso: [](sec:rg), `RGSetComplement()` | ||
| 700 | @*/ | ||
| 701 | 537 | PetscErrorCode RGGetComplement(RG rg,PetscBool *flg) | |
| 702 | { | ||
| 703 |
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537 | PetscFunctionBegin; |
| 704 |
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537 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 705 |
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537 | PetscAssertPointer(flg,2); |
| 706 | 537 | *flg = rg->complement; | |
| 707 |
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537 | PetscFunctionReturn(PETSC_SUCCESS); |
| 708 | } | ||
| 709 | |||
| 710 | /*@ | ||
| 711 | RGSetScale - Sets the scaling factor to be used when checking that a | ||
| 712 | point is inside the region and when computing the contour. | ||
| 713 | |||
| 714 | Logically Collective | ||
| 715 | |||
| 716 | Input Parameters: | ||
| 717 | + rg - the region context | ||
| 718 | - sfactor - the scaling factor | ||
| 719 | |||
| 720 | Options Database Key: | ||
| 721 | . -rg_scale sfactor - sets the scaling factor | ||
| 722 | |||
| 723 | Level: intermediate | ||
| 724 | |||
| 725 | .seealso: [](sec:rg), `RGGetScale()`, `RGCheckInside()`, `RGComputeContour()` | ||
| 726 | @*/ | ||
| 727 | 10 | PetscErrorCode RGSetScale(RG rg,PetscReal sfactor) | |
| 728 | { | ||
| 729 |
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10 | PetscFunctionBegin; |
| 730 |
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10 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 731 |
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10 | PetscValidLogicalCollectiveReal(rg,sfactor,2); |
| 732 |
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10 | if (sfactor == (PetscReal)PETSC_DEFAULT || sfactor == (PetscReal)PETSC_DECIDE) sfactor = 1.0; |
| 733 |
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10 | PetscCheck(sfactor>0.0,PetscObjectComm((PetscObject)rg),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of scaling factor. Must be > 0"); |
| 734 | 10 | rg->sfactor = sfactor; | |
| 735 |
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10 | PetscFunctionReturn(PETSC_SUCCESS); |
| 736 | } | ||
| 737 | |||
| 738 | /*@ | ||
| 739 | RGGetScale - Gets the scaling factor. | ||
| 740 | |||
| 741 | Not Collective | ||
| 742 | |||
| 743 | Input Parameter: | ||
| 744 | . rg - the region context | ||
| 745 | |||
| 746 | Output Parameter: | ||
| 747 | . sfactor - the scaling factor | ||
| 748 | |||
| 749 | Level: intermediate | ||
| 750 | |||
| 751 | .seealso: [](sec:rg), `RGSetScale()` | ||
| 752 | @*/ | ||
| 753 | 965 | PetscErrorCode RGGetScale(RG rg,PetscReal *sfactor) | |
| 754 | { | ||
| 755 |
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965 | PetscFunctionBegin; |
| 756 |
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965 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 757 |
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965 | PetscAssertPointer(sfactor,2); |
| 758 | 965 | *sfactor = rg->sfactor; | |
| 759 |
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965 | PetscFunctionReturn(PETSC_SUCCESS); |
| 760 | } | ||
| 761 | |||
| 762 | /*@ | ||
| 763 | RGPushScale - Sets an additional scaling factor, that will multiply the | ||
| 764 | user-defined scaling factor. | ||
| 765 | |||
| 766 | Logically Collective | ||
| 767 | |||
| 768 | Input Parameters: | ||
| 769 | + rg - the region context | ||
| 770 | - sfactor - the scaling factor | ||
| 771 | |||
| 772 | Notes: | ||
| 773 | The current implementation does not allow pushing several scaling factors. | ||
| 774 | |||
| 775 | This is intended for internal use, for instance in polynomial eigensolvers | ||
| 776 | that use parameter scaling. | ||
| 777 | |||
| 778 | Level: developer | ||
| 779 | |||
| 780 | .seealso: [](sec:rg), `RGPopScale()`, `RGSetScale()` | ||
| 781 | @*/ | ||
| 782 | 905 | PetscErrorCode RGPushScale(RG rg,PetscReal sfactor) | |
| 783 | { | ||
| 784 |
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905 | PetscFunctionBegin; |
| 785 |
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905 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 786 |
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905 | PetscValidLogicalCollectiveReal(rg,sfactor,2); |
| 787 |
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905 | PetscCheck(sfactor>0.0,PetscObjectComm((PetscObject)rg),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of scaling factor. Must be > 0"); |
| 788 |
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905 | PetscCheck(!rg->osfactor,PetscObjectComm((PetscObject)rg),PETSC_ERR_SUP,"Current implementation does not allow pushing several scaling factors"); |
| 789 | 905 | rg->osfactor = rg->sfactor; | |
| 790 | 905 | rg->sfactor *= sfactor; | |
| 791 |
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905 | PetscFunctionReturn(PETSC_SUCCESS); |
| 792 | } | ||
| 793 | |||
| 794 | /*@ | ||
| 795 | RGPopScale - Pops the scaling factor set with `RGPushScale()`. | ||
| 796 | |||
| 797 | Logically Collective | ||
| 798 | |||
| 799 | Input Parameter: | ||
| 800 | . rg - the region context | ||
| 801 | |||
| 802 | Level: developer | ||
| 803 | |||
| 804 | .seealso: [](sec:rg), `RGPushScale()` | ||
| 805 | @*/ | ||
| 806 | 905 | PetscErrorCode RGPopScale(RG rg) | |
| 807 | { | ||
| 808 |
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905 | PetscFunctionBegin; |
| 809 |
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905 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 810 |
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905 | PetscCheck(rg->osfactor,PetscObjectComm((PetscObject)rg),PETSC_ERR_ORDER,"Must call RGPushScale first"); |
| 811 | 905 | rg->sfactor = rg->osfactor; | |
| 812 | 905 | rg->osfactor = 0.0; | |
| 813 |
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905 | PetscFunctionReturn(PETSC_SUCCESS); |
| 814 | } | ||
| 815 | |||
| 816 | /*@ | ||
| 817 | RGDestroy - Destroys `RG` context that was created with `RGCreate()`. | ||
| 818 | |||
| 819 | Collective | ||
| 820 | |||
| 821 | Input Parameter: | ||
| 822 | . rg - the region context | ||
| 823 | |||
| 824 | Level: beginner | ||
| 825 | |||
| 826 | .seealso: [](sec:rg), `RGCreate()` | ||
| 827 | @*/ | ||
| 828 | 11739 | PetscErrorCode RGDestroy(RG *rg) | |
| 829 | { | ||
| 830 |
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11739 | PetscFunctionBegin; |
| 831 |
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11739 | if (!*rg) PetscFunctionReturn(PETSC_SUCCESS); |
| 832 |
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11105 | PetscValidHeaderSpecific(*rg,RG_CLASSID,1); |
| 833 |
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11105 | if (--((PetscObject)*rg)->refct > 0) { *rg = NULL; PetscFunctionReturn(PETSC_SUCCESS); } |
| 834 |
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10861 | PetscTryTypeMethod(*rg,destroy); |
| 835 |
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10861 | PetscCall(PetscHeaderDestroy(rg)); |
| 836 |
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2099 | PetscFunctionReturn(PETSC_SUCCESS); |
| 837 | } | ||
| 838 | |||
| 839 | /*@C | ||
| 840 | RGRegister - Adds a region to the `RG` package. | ||
| 841 | |||
| 842 | Not Collective | ||
| 843 | |||
| 844 | Input Parameters: | ||
| 845 | + name - name of a new user-defined RG | ||
| 846 | - function - routine to create context | ||
| 847 | |||
| 848 | Note: | ||
| 849 | `RGRegister()` may be called multiple times to add several user-defined regions. | ||
| 850 | |||
| 851 | Level: advanced | ||
| 852 | |||
| 853 | .seealso: [](sec:rg), `RGRegisterAll()` | ||
| 854 | @*/ | ||
| 855 | 37008 | PetscErrorCode RGRegister(const char *name,PetscErrorCode (*function)(RG)) | |
| 856 | { | ||
| 857 |
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37008 | PetscFunctionBegin; |
| 858 |
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37008 | PetscCall(RGInitializePackage()); |
| 859 |
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37008 | PetscCall(PetscFunctionListAdd(&RGList,name,function)); |
| 860 |
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7196 | PetscFunctionReturn(PETSC_SUCCESS); |
| 861 | } | ||
| 862 |