| 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 | 7145 | PetscErrorCode RGFinalizePackage(void) | |
| 30 | { | ||
| 31 |
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7145 | PetscFunctionBegin; |
| 32 |
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7145 | PetscCall(PetscFunctionListDestroy(&RGList)); |
| 33 | 7145 | RGPackageInitialized = PETSC_FALSE; | |
| 34 | 7145 | RGRegisterAllCalled = PETSC_FALSE; | |
| 35 |
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7145 | 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 | 37049 | PetscErrorCode RGInitializePackage(void) | |
| 51 | { | ||
| 52 | 37049 | char logList[256]; | |
| 53 | 37049 | PetscBool opt,pkg; | |
| 54 | 37049 | PetscClassId classids[1]; | |
| 55 | |||
| 56 |
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37049 | PetscFunctionBegin; |
| 57 |
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37049 | if (RGPackageInitialized) PetscFunctionReturn(PETSC_SUCCESS); |
| 58 | 7145 | RGPackageInitialized = PETSC_TRUE; | |
| 59 | /* Register Classes */ | ||
| 60 |
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7145 | PetscCall(PetscClassIdRegister("Region",&RG_CLASSID)); |
| 61 | /* Register Constructors */ | ||
| 62 |
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7145 | PetscCall(RGRegisterAll()); |
| 63 | /* Process Info */ | ||
| 64 | 7145 | classids[0] = RG_CLASSID; | |
| 65 |
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7145 | PetscCall(PetscInfoProcessClass("rg",1,&classids[0])); |
| 66 | /* Process summary exclusions */ | ||
| 67 |
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7145 | PetscCall(PetscOptionsGetString(NULL,NULL,"-log_exclude",logList,sizeof(logList),&opt)); |
| 68 |
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7145 | if (opt) { |
| 69 |
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66 | PetscCall(PetscStrInList("rg",logList,',',&pkg)); |
| 70 |
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66 | if (pkg) PetscCall(PetscLogEventDeactivateClass(RG_CLASSID)); |
| 71 | } | ||
| 72 | /* Register package finalizer */ | ||
| 73 |
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7145 | PetscCall(PetscRegisterFinalize(RGFinalizePackage)); |
| 74 |
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1746 | 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 | 8424 | PetscErrorCode RGCreate(MPI_Comm comm,RG *newrg) | |
| 93 | { | ||
| 94 | 8424 | RG rg; | |
| 95 | |||
| 96 |
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8424 | PetscFunctionBegin; |
| 97 |
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8424 | PetscAssertPointer(newrg,2); |
| 98 |
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8424 | PetscCall(RGInitializePackage()); |
| 99 |
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8424 | PetscCall(SlepcHeaderCreate(rg,RG_CLASSID,"RG","Region","RG",comm,RGDestroy,RGView)); |
| 100 | 8424 | rg->complement = PETSC_FALSE; | |
| 101 | 8424 | rg->sfactor = 1.0; | |
| 102 | 8424 | rg->osfactor = 0.0; | |
| 103 | 8424 | rg->data = NULL; | |
| 104 | |||
| 105 | 8424 | *newrg = rg; | |
| 106 |
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8424 | 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 | 1976 | PetscErrorCode RGSetOptionsPrefix(RG rg,const char prefix[]) | |
| 129 | { | ||
| 130 |
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1976 | PetscFunctionBegin; |
| 131 |
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1976 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 132 |
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1976 | 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 | 1591 | PetscErrorCode RGAppendOptionsPrefix(RG rg,const char prefix[]) | |
| 155 | { | ||
| 156 |
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1591 | PetscFunctionBegin; |
| 157 |
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1591 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 158 |
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1591 | 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 | 9033 | PetscErrorCode RGSetType(RG rg,RGType type) | |
| 204 | { | ||
| 205 | 9033 | PetscErrorCode (*r)(RG); | |
| 206 | 9033 | PetscBool match; | |
| 207 | |||
| 208 |
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9033 | PetscFunctionBegin; |
| 209 |
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9033 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 210 |
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9033 | PetscAssertPointer(type,2); |
| 211 | |||
| 212 |
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9033 | PetscCall(PetscObjectTypeCompare((PetscObject)rg,type,&match)); |
| 213 |
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9033 | if (match) PetscFunctionReturn(PETSC_SUCCESS); |
| 214 | |||
| 215 |
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8526 | PetscCall(PetscFunctionListFind(RGList,type,&r)); |
| 216 |
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8526 | PetscCheck(r,PetscObjectComm((PetscObject)rg),PETSC_ERR_ARG_UNKNOWN_TYPE,"Unable to find requested RG type %s",type); |
| 217 | |||
| 218 |
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8526 | PetscTryTypeMethod(rg,destroy); |
| 219 |
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8526 | PetscCall(PetscMemzero(rg->ops,sizeof(struct _RGOps))); |
| 220 | |||
| 221 |
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8526 | PetscCall(PetscObjectChangeTypeName((PetscObject)rg,type)); |
| 222 |
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8526 | PetscCall((*r)(rg)); |
| 223 |
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2070 | 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 | Level: beginner | ||
| 238 | |||
| 239 | .seealso: [](sec:rg), `RGSetType()` | ||
| 240 | @*/ | ||
| 241 | 40 | PetscErrorCode RGGetType(RG rg,RGType *type) | |
| 242 | { | ||
| 243 |
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40 | PetscFunctionBegin; |
| 244 |
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40 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 245 |
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40 | PetscAssertPointer(type,2); |
| 246 | 40 | *type = ((PetscObject)rg)->type_name; | |
| 247 |
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40 | PetscFunctionReturn(PETSC_SUCCESS); |
| 248 | } | ||
| 249 | |||
| 250 | /*@ | ||
| 251 | RGSetFromOptions - Sets `RG` options from the options database. | ||
| 252 | |||
| 253 | Collective | ||
| 254 | |||
| 255 | Input Parameter: | ||
| 256 | . rg - the region context | ||
| 257 | |||
| 258 | Note: | ||
| 259 | To see all options, run your program with the `-help` option. | ||
| 260 | |||
| 261 | Level: beginner | ||
| 262 | |||
| 263 | .seealso: [](sec:rg), `RGSetOptionsPrefix()` | ||
| 264 | @*/ | ||
| 265 | 8435 | PetscErrorCode RGSetFromOptions(RG rg) | |
| 266 | { | ||
| 267 | 8435 | char type[256]; | |
| 268 | 8435 | PetscBool flg; | |
| 269 | 8435 | PetscReal sfactor; | |
| 270 | |||
| 271 |
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8435 | PetscFunctionBegin; |
| 272 |
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8435 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 273 |
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8435 | PetscCall(RGRegisterAll()); |
| 274 |
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25305 | PetscObjectOptionsBegin((PetscObject)rg); |
| 275 |
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9382 | PetscCall(PetscOptionsFList("-rg_type","Region type","RGSetType",RGList,(char*)(((PetscObject)rg)->type_name?((PetscObject)rg)->type_name:RGINTERVAL),type,sizeof(type),&flg)); |
| 276 |
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8435 | if (flg) PetscCall(RGSetType(rg,type)); |
| 277 |
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7519 | else if (!((PetscObject)rg)->type_name) PetscCall(RGSetType(rg,RGINTERVAL)); |
| 278 | |||
| 279 |
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8435 | PetscCall(PetscOptionsBool("-rg_complement","Whether region is complemented or not","RGSetComplement",rg->complement,&rg->complement,NULL)); |
| 280 | |||
| 281 |
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8435 | PetscCall(PetscOptionsReal("-rg_scale","Scaling factor","RGSetScale",1.0,&sfactor,&flg)); |
| 282 |
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8435 | if (flg) PetscCall(RGSetScale(rg,sfactor)); |
| 283 | |||
| 284 |
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8435 | PetscTryTypeMethod(rg,setfromoptions,PetscOptionsObject); |
| 285 |
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8435 | PetscCall(PetscObjectProcessOptionsHandlers((PetscObject)rg,PetscOptionsObject)); |
| 286 |
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8435 | PetscOptionsEnd(); |
| 287 |
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8435 | PetscFunctionReturn(PETSC_SUCCESS); |
| 288 | } | ||
| 289 | |||
| 290 | /*@ | ||
| 291 | RGView - Prints the `RG` data structure. | ||
| 292 | |||
| 293 | Collective | ||
| 294 | |||
| 295 | Input Parameters: | ||
| 296 | + rg - the region context | ||
| 297 | - viewer - optional visualization context | ||
| 298 | |||
| 299 | Notes: | ||
| 300 | The available visualization contexts include | ||
| 301 | + `PETSC_VIEWER_STDOUT_SELF` - standard output (default) | ||
| 302 | - `PETSC_VIEWER_STDOUT_WORLD` - synchronized standard output where only the | ||
| 303 | first process opens the file; all other processes send their data to the | ||
| 304 | first one to print | ||
| 305 | |||
| 306 | The user can open an alternative visualization context with `PetscViewerASCIIOpen()` | ||
| 307 | to output to a specified file. | ||
| 308 | |||
| 309 | Use `RGViewFromOptions()` to allow the user to select many different `PetscViewerType` | ||
| 310 | and formats from the options database. | ||
| 311 | |||
| 312 | Level: beginner | ||
| 313 | |||
| 314 | .seealso: [](sec:rg), `RGCreate()`, `RGViewFromOptions()` | ||
| 315 | @*/ | ||
| 316 | 168 | PetscErrorCode RGView(RG rg,PetscViewer viewer) | |
| 317 | { | ||
| 318 | 168 | PetscBool isdraw,isascii; | |
| 319 | |||
| 320 |
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168 | PetscFunctionBegin; |
| 321 |
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168 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 322 |
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168 | if (!viewer) PetscCall(PetscViewerASCIIGetStdout(PetscObjectComm((PetscObject)rg),&viewer)); |
| 323 |
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168 | PetscValidHeaderSpecific(viewer,PETSC_VIEWER_CLASSID,2); |
| 324 |
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168 | PetscCheckSameComm(rg,1,viewer,2); |
| 325 |
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168 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERDRAW,&isdraw)); |
| 326 |
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168 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&isascii)); |
| 327 |
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168 | if (isascii) { |
| 328 |
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136 | PetscCall(PetscObjectPrintClassNamePrefixType((PetscObject)rg,viewer)); |
| 329 |
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136 | PetscCall(PetscViewerASCIIPushTab(viewer)); |
| 330 |
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136 | PetscTryTypeMethod(rg,view,viewer); |
| 331 |
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136 | PetscCall(PetscViewerASCIIPopTab(viewer)); |
| 332 |
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136 | if (rg->complement) PetscCall(PetscViewerASCIIPrintf(viewer," selected region is the complement of the specified one\n")); |
| 333 |
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136 | if (rg->sfactor!=1.0) PetscCall(PetscViewerASCIIPrintf(viewer," scaling factor = %g\n",(double)rg->sfactor)); |
| 334 |
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32 | } else if (isdraw) PetscTryTypeMethod(rg,view,viewer); |
| 335 |
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37 | PetscFunctionReturn(PETSC_SUCCESS); |
| 336 | } | ||
| 337 | |||
| 338 | /*@ | ||
| 339 | RGViewFromOptions - View (print) an `RG` object based on values in the options database. | ||
| 340 | |||
| 341 | Collective | ||
| 342 | |||
| 343 | Input Parameters: | ||
| 344 | + rg - the region context | ||
| 345 | . obj - optional object that provides the options prefix used to query the options database | ||
| 346 | - name - command line option | ||
| 347 | |||
| 348 | Level: intermediate | ||
| 349 | |||
| 350 | .seealso: [](sec:rg), `RGView()`, `RGCreate()`, `PetscObjectViewFromOptions()` | ||
| 351 | @*/ | ||
| 352 | 10791 | PetscErrorCode RGViewFromOptions(RG rg,PetscObject obj,const char name[]) | |
| 353 | { | ||
| 354 |
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10791 | PetscFunctionBegin; |
| 355 |
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10791 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 356 |
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10791 | PetscCall(PetscObjectViewFromOptions((PetscObject)rg,obj,name)); |
| 357 |
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2613 | PetscFunctionReturn(PETSC_SUCCESS); |
| 358 | } | ||
| 359 | |||
| 360 | /*@ | ||
| 361 | RGIsTrivial - Whether it is the trivial region (whole complex plane). | ||
| 362 | |||
| 363 | Not Collective | ||
| 364 | |||
| 365 | Input Parameter: | ||
| 366 | . rg - the region context | ||
| 367 | |||
| 368 | Output Parameter: | ||
| 369 | . trivial - true if the region is equal to the whole complex plane, e.g., | ||
| 370 | an interval region with all four endpoints unbounded or an | ||
| 371 | ellipse with infinite radius. | ||
| 372 | |||
| 373 | Level: beginner | ||
| 374 | |||
| 375 | .seealso: [](sec:rg), `RGCheckInside()` | ||
| 376 | @*/ | ||
| 377 | 68834 | PetscErrorCode RGIsTrivial(RG rg,PetscBool *trivial) | |
| 378 | { | ||
| 379 |
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68834 | PetscFunctionBegin; |
| 380 |
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68834 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 381 |
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68834 | PetscValidType(rg,1); |
| 382 |
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68834 | PetscAssertPointer(trivial,2); |
| 383 | 68834 | *trivial = PETSC_FALSE; | |
| 384 |
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68834 | PetscTryTypeMethod(rg,istrivial,trivial); |
| 385 |
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16897 | PetscFunctionReturn(PETSC_SUCCESS); |
| 386 | } | ||
| 387 | |||
| 388 | /*@ | ||
| 389 | RGCheckInside - Determines if a set of given points are inside the region or not. | ||
| 390 | |||
| 391 | Not Collective | ||
| 392 | |||
| 393 | Input Parameters: | ||
| 394 | + rg - the region context | ||
| 395 | . n - number of points to check | ||
| 396 | . ar - array of real parts | ||
| 397 | - ai - array of imaginary parts | ||
| 398 | |||
| 399 | Output Parameter: | ||
| 400 | . inside - array of results (1=inside, 0=on the contour, -1=outside) | ||
| 401 | |||
| 402 | Notes: | ||
| 403 | The point `a` is expressed as a couple of `PetscScalar` variables `ar`, `ai`. | ||
| 404 | If built with complex scalars, the point is supposed to be stored in `ar`, | ||
| 405 | otherwise `ar`, `ai` contain the real and imaginary parts, respectively. | ||
| 406 | |||
| 407 | If a scaling factor was set, the points are scaled before checking. | ||
| 408 | |||
| 409 | Level: intermediate | ||
| 410 | |||
| 411 | .seealso: [](sec:rg), `RGSetScale()`, `RGSetComplement()` | ||
| 412 | @*/ | ||
| 413 | 736778 | PetscErrorCode RGCheckInside(RG rg,PetscInt n,PetscScalar ar[],PetscScalar ai[],PetscInt inside[]) | |
| 414 | { | ||
| 415 | 736778 | PetscReal px,py; | |
| 416 | 736778 | PetscInt i; | |
| 417 | |||
| 418 |
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736778 | PetscFunctionBegin; |
| 419 |
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736778 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 420 |
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736778 | PetscValidType(rg,1); |
| 421 |
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736778 | PetscAssertPointer(ar,3); |
| 422 | #if !defined(PETSC_USE_COMPLEX) | ||
| 423 |
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268880 | PetscAssertPointer(ai,4); |
| 424 | #endif | ||
| 425 |
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736778 | PetscAssertPointer(inside,5); |
| 426 | |||
| 427 |
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2215933 | for (i=0;i<n;i++) { |
| 428 | #if defined(PETSC_USE_COMPLEX) | ||
| 429 | 942606 | px = PetscRealPart(ar[i]); | |
| 430 | 942606 | py = PetscImaginaryPart(ar[i]); | |
| 431 | #else | ||
| 432 | 536549 | px = ar[i]; | |
| 433 | 536549 | py = ai[i]; | |
| 434 | #endif | ||
| 435 |
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1479155 | if (PetscUnlikely(rg->sfactor != 1.0)) { |
| 436 | 16 | px /= rg->sfactor; | |
| 437 | 16 | py /= rg->sfactor; | |
| 438 | } | ||
| 439 |
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1479155 | PetscUseTypeMethod(rg,checkinside,px,py,inside+i); |
| 440 |
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1479155 | if (PetscUnlikely(rg->complement)) inside[i] = -inside[i]; |
| 441 | } | ||
| 442 |
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181275 | PetscFunctionReturn(PETSC_SUCCESS); |
| 443 | } | ||
| 444 | |||
| 445 | /*@ | ||
| 446 | RGIsAxisymmetric - Determines if the region is symmetric with respect | ||
| 447 | to the real or imaginary axis. | ||
| 448 | |||
| 449 | Not Collective | ||
| 450 | |||
| 451 | Input Parameters: | ||
| 452 | + rg - the region context | ||
| 453 | - vertical - `PETSC_TRUE` if symmetry must be checked against the vertical axis | ||
| 454 | |||
| 455 | Output Parameter: | ||
| 456 | . symm - `PETSC_TRUE` if the region is axisymmetric | ||
| 457 | |||
| 458 | Note: | ||
| 459 | If the vertical argument is true, symmetry is checked with respect to | ||
| 460 | the vertical axis, otherwise with respect to the horizontal axis. | ||
| 461 | |||
| 462 | Level: intermediate | ||
| 463 | |||
| 464 | .seealso: [](sec:rg), `RGCanUseConjugates()` | ||
| 465 | @*/ | ||
| 466 | 195 | PetscErrorCode RGIsAxisymmetric(RG rg,PetscBool vertical,PetscBool *symm) | |
| 467 | { | ||
| 468 |
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195 | PetscFunctionBegin; |
| 469 |
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195 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 470 |
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195 | PetscValidType(rg,1); |
| 471 |
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195 | PetscAssertPointer(symm,3); |
| 472 | 195 | *symm = PETSC_FALSE; | |
| 473 |
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195 | PetscTryTypeMethod(rg,isaxisymmetric,vertical,symm); |
| 474 |
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51 | PetscFunctionReturn(PETSC_SUCCESS); |
| 475 | } | ||
| 476 | |||
| 477 | /*@ | ||
| 478 | RGCanUseConjugates - Used in contour integral methods to determine whether | ||
| 479 | half of integration points can be avoided (use their conjugates). | ||
| 480 | |||
| 481 | Not Collective | ||
| 482 | |||
| 483 | Input Parameters: | ||
| 484 | + rg - the region context | ||
| 485 | - realmats - `PETSC_TRUE` if the problem matrices are real | ||
| 486 | |||
| 487 | Output Parameter: | ||
| 488 | . useconj - whether it is possible to use conjugates | ||
| 489 | |||
| 490 | Notes: | ||
| 491 | If some integration points are the conjugates of other points, then the | ||
| 492 | associated computational cost can be saved. This depends on the problem | ||
| 493 | matrices being real and also the region being symmetric with respect to | ||
| 494 | the horizontal axis. The result is false if using real arithmetic or | ||
| 495 | in the case of a flat region (height equal to zero). | ||
| 496 | |||
| 497 | Level: developer | ||
| 498 | |||
| 499 | .seealso: [](sec:rg), `RGIsAxisymmetric()` | ||
| 500 | @*/ | ||
| 501 | 447 | PetscErrorCode RGCanUseConjugates(RG rg,PetscBool realmats,PetscBool *useconj) | |
| 502 | { | ||
| 503 | #if defined(PETSC_USE_COMPLEX) | ||
| 504 | 348 | PetscReal c,d; | |
| 505 | 348 | PetscBool isaxisymm; | |
| 506 | #endif | ||
| 507 | |||
| 508 |
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447 | PetscFunctionBegin; |
| 509 |
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447 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 510 |
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447 | PetscValidType(rg,1); |
| 511 |
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447 | PetscAssertPointer(useconj,3); |
| 512 | 447 | *useconj = PETSC_FALSE; | |
| 513 | #if defined(PETSC_USE_COMPLEX) | ||
| 514 |
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348 | if (realmats) { |
| 515 |
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103 | PetscCall(RGIsAxisymmetric(rg,PETSC_FALSE,&isaxisymm)); |
| 516 |
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103 | if (isaxisymm) { |
| 517 |
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99 | PetscCall(RGComputeBoundingBox(rg,NULL,NULL,&c,&d)); |
| 518 |
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99 | if (c!=d) *useconj = PETSC_TRUE; |
| 519 | } | ||
| 520 | } | ||
| 521 | #endif | ||
| 522 |
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189 | PetscFunctionReturn(PETSC_SUCCESS); |
| 523 | } | ||
| 524 | |||
| 525 | /*@ | ||
| 526 | RGComputeContour - Computes the coordinates of several points lying on the | ||
| 527 | contour of the region. | ||
| 528 | |||
| 529 | Not Collective | ||
| 530 | |||
| 531 | Input Parameters: | ||
| 532 | + rg - the region context | ||
| 533 | - n - number of points to compute | ||
| 534 | |||
| 535 | Output Parameters: | ||
| 536 | + cr - location to store real parts | ||
| 537 | - ci - location to store imaginary parts | ||
| 538 | |||
| 539 | Note: | ||
| 540 | In real scalars, either `cr` or `ci` can be `NULL` (but not both). In complex | ||
| 541 | scalars, the coordinates are stored in `cr`, which cannot be `NULL` (`ci` is | ||
| 542 | not referenced). | ||
| 543 | |||
| 544 | Level: intermediate | ||
| 545 | |||
| 546 | .seealso: [](sec:rg), `RGComputeBoundingBox()`, `RGSetScale()` | ||
| 547 | @*/ | ||
| 548 | 865 | PetscErrorCode RGComputeContour(RG rg,PetscInt n,PetscScalar cr[],PetscScalar ci[]) | |
| 549 | { | ||
| 550 | 865 | PetscInt i; | |
| 551 | |||
| 552 |
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865 | PetscFunctionBegin; |
| 553 |
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865 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 554 |
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865 | PetscValidType(rg,1); |
| 555 | #if defined(PETSC_USE_COMPLEX) | ||
| 556 |
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604 | PetscAssertPointer(cr,3); |
| 557 | #else | ||
| 558 |
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261 | PetscCheck(cr || ci,PetscObjectComm((PetscObject)rg),PETSC_ERR_SUP,"cr and ci cannot be NULL simultaneously"); |
| 559 | #endif | ||
| 560 |
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865 | PetscCheck(!rg->complement,PetscObjectComm((PetscObject)rg),PETSC_ERR_SUP,"Cannot compute contour of region with complement flag set"); |
| 561 |
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865 | PetscUseTypeMethod(rg,computecontour,n,cr,ci); |
| 562 |
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1371947 | for (i=0;i<n;i++) { |
| 563 |
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1371082 | if (cr) cr[i] *= rg->sfactor; |
| 564 |
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1371082 | if (ci) ci[i] *= rg->sfactor; |
| 565 | } | ||
| 566 |
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215 | PetscFunctionReturn(PETSC_SUCCESS); |
| 567 | } | ||
| 568 | |||
| 569 | /*@ | ||
| 570 | RGComputeBoundingBox - Determines the endpoints of a rectangle in the complex plane that | ||
| 571 | contains the region. | ||
| 572 | |||
| 573 | Not Collective | ||
| 574 | |||
| 575 | Input Parameter: | ||
| 576 | . rg - the region context | ||
| 577 | |||
| 578 | Output Parameters: | ||
| 579 | + a - left endpoint of the bounding box in the real axis | ||
| 580 | . b - right endpoint of the bounding box in the real axis | ||
| 581 | . c - bottom endpoint of the bounding box in the imaginary axis | ||
| 582 | - d - top endpoint of the bounding box in the imaginary axis | ||
| 583 | |||
| 584 | Note: | ||
| 585 | The bounding box is defined as $[a,b]\times[c,d]$. In regions that are not bounded (e.g., an | ||
| 586 | open interval) or with the complement flag set, it makes no sense to compute a bounding | ||
| 587 | box, so the return values are infinite. | ||
| 588 | |||
| 589 | Level: intermediate | ||
| 590 | |||
| 591 | .seealso: [](sec:rg), `RGComputeContour()`, `RGSetScale()`, `RGSetComplement()` | ||
| 592 | @*/ | ||
| 593 | 200 | PetscErrorCode RGComputeBoundingBox(RG rg,PetscReal *a,PetscReal *b,PetscReal *c,PetscReal *d) | |
| 594 | { | ||
| 595 |
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200 | PetscFunctionBegin; |
| 596 |
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200 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 597 |
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200 | PetscValidType(rg,1); |
| 598 | |||
| 599 |
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200 | if (rg->complement) { /* cannot compute bounding box */ |
| 600 | ✗ | if (a) *a = -PETSC_MAX_REAL; | |
| 601 | ✗ | if (b) *b = PETSC_MAX_REAL; | |
| 602 | ✗ | if (c) *c = -PETSC_MAX_REAL; | |
| 603 | ✗ | if (d) *d = PETSC_MAX_REAL; | |
| 604 | } else { | ||
| 605 |
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200 | PetscUseTypeMethod(rg,computebbox,a,b,c,d); |
| 606 |
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200 | if (a && *a!=-PETSC_MAX_REAL) *a *= rg->sfactor; |
| 607 |
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200 | if (b && *b!= PETSC_MAX_REAL) *b *= rg->sfactor; |
| 608 |
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200 | if (c && *c!=-PETSC_MAX_REAL) *c *= rg->sfactor; |
| 609 |
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200 | if (d && *d!= PETSC_MAX_REAL) *d *= rg->sfactor; |
| 610 | } | ||
| 611 |
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51 | PetscFunctionReturn(PETSC_SUCCESS); |
| 612 | } | ||
| 613 | |||
| 614 | /*@ | ||
| 615 | RGComputeQuadrature - Computes the values of the parameters used in a | ||
| 616 | quadrature rule for a contour integral around the boundary of the region. | ||
| 617 | |||
| 618 | Not Collective | ||
| 619 | |||
| 620 | Input Parameters: | ||
| 621 | + rg - the region context | ||
| 622 | . quad - the type of quadrature | ||
| 623 | - n - number of quadrature points to compute | ||
| 624 | |||
| 625 | Output Parameters: | ||
| 626 | + z - quadrature points | ||
| 627 | . zn - normalized quadrature points | ||
| 628 | - w - quadrature weights | ||
| 629 | |||
| 630 | Notes: | ||
| 631 | In complex scalars, the values returned in `z` are often the same as those | ||
| 632 | computed by `RGComputeContour()`, but this is not the case in real scalars | ||
| 633 | where all output arguments are real. | ||
| 634 | |||
| 635 | The computed values change for different quadrature rules. | ||
| 636 | |||
| 637 | Level: advanced | ||
| 638 | |||
| 639 | .seealso: [](sec:rg), `RGComputeContour()` | ||
| 640 | @*/ | ||
| 641 | 538 | PetscErrorCode RGComputeQuadrature(RG rg,RGQuadRule quad,PetscInt n,PetscScalar z[],PetscScalar zn[],PetscScalar w[]) | |
| 642 | { | ||
| 643 |
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538 | PetscFunctionBegin; |
| 644 |
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538 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 645 |
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538 | PetscValidType(rg,1); |
| 646 |
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538 | PetscAssertPointer(z,4); |
| 647 |
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538 | PetscAssertPointer(zn,5); |
| 648 |
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538 | PetscAssertPointer(w,6); |
| 649 | |||
| 650 |
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538 | PetscCall(RGComputeContour(rg,n,z,NULL)); |
| 651 |
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538 | PetscUseTypeMethod(rg,computequadrature,quad,n,z,zn,w); |
| 652 |
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139 | PetscFunctionReturn(PETSC_SUCCESS); |
| 653 | } | ||
| 654 | |||
| 655 | /*@ | ||
| 656 | RGSetComplement - Sets a flag to indicate that the region is the complement | ||
| 657 | of the specified one. | ||
| 658 | |||
| 659 | Logically Collective | ||
| 660 | |||
| 661 | Input Parameters: | ||
| 662 | + rg - the region context | ||
| 663 | - flg - the boolean flag | ||
| 664 | |||
| 665 | Options Database Key: | ||
| 666 | . -rg_complement - activate/deactivate complementing of the region | ||
| 667 | |||
| 668 | Level: intermediate | ||
| 669 | |||
| 670 | .seealso: [](sec:rg), `RGGetComplement()` | ||
| 671 | @*/ | ||
| 672 | 8 | PetscErrorCode RGSetComplement(RG rg,PetscBool flg) | |
| 673 | { | ||
| 674 |
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8 | PetscFunctionBegin; |
| 675 |
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8 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 676 |
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8 | PetscValidLogicalCollectiveBool(rg,flg,2); |
| 677 | 8 | rg->complement = flg; | |
| 678 |
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8 | PetscFunctionReturn(PETSC_SUCCESS); |
| 679 | } | ||
| 680 | |||
| 681 | /*@ | ||
| 682 | RGGetComplement - Gets a flag that indicates whether the region | ||
| 683 | is complemented or not. | ||
| 684 | |||
| 685 | Not Collective | ||
| 686 | |||
| 687 | Input Parameter: | ||
| 688 | . rg - the region context | ||
| 689 | |||
| 690 | Output Parameter: | ||
| 691 | . flg - the flag | ||
| 692 | |||
| 693 | Level: intermediate | ||
| 694 | |||
| 695 | .seealso: [](sec:rg), `RGSetComplement()` | ||
| 696 | @*/ | ||
| 697 | 431 | PetscErrorCode RGGetComplement(RG rg,PetscBool *flg) | |
| 698 | { | ||
| 699 |
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431 | PetscFunctionBegin; |
| 700 |
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431 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 701 |
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431 | PetscAssertPointer(flg,2); |
| 702 | 431 | *flg = rg->complement; | |
| 703 |
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431 | PetscFunctionReturn(PETSC_SUCCESS); |
| 704 | } | ||
| 705 | |||
| 706 | /*@ | ||
| 707 | RGSetScale - Sets the scaling factor to be used when checking that a | ||
| 708 | point is inside the region and when computing the contour. | ||
| 709 | |||
| 710 | Logically Collective | ||
| 711 | |||
| 712 | Input Parameters: | ||
| 713 | + rg - the region context | ||
| 714 | - sfactor - the scaling factor | ||
| 715 | |||
| 716 | Options Database Key: | ||
| 717 | . -rg_scale \<sfactor\> - sets the scaling factor | ||
| 718 | |||
| 719 | Level: intermediate | ||
| 720 | |||
| 721 | .seealso: [](sec:rg), `RGGetScale()`, `RGCheckInside()`, `RGComputeContour()` | ||
| 722 | @*/ | ||
| 723 | 8 | PetscErrorCode RGSetScale(RG rg,PetscReal sfactor) | |
| 724 | { | ||
| 725 |
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8 | PetscFunctionBegin; |
| 726 |
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8 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 727 |
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8 | PetscValidLogicalCollectiveReal(rg,sfactor,2); |
| 728 |
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8 | if (sfactor == (PetscReal)PETSC_DEFAULT || sfactor == (PetscReal)PETSC_DECIDE) sfactor = 1.0; |
| 729 |
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8 | PetscCheck(sfactor>0.0,PetscObjectComm((PetscObject)rg),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of scaling factor. Must be > 0"); |
| 730 | 8 | rg->sfactor = sfactor; | |
| 731 |
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8 | PetscFunctionReturn(PETSC_SUCCESS); |
| 732 | } | ||
| 733 | |||
| 734 | /*@ | ||
| 735 | RGGetScale - Gets the scaling factor. | ||
| 736 | |||
| 737 | Not Collective | ||
| 738 | |||
| 739 | Input Parameter: | ||
| 740 | . rg - the region context | ||
| 741 | |||
| 742 | Output Parameter: | ||
| 743 | . sfactor - the scaling factor | ||
| 744 | |||
| 745 | Level: intermediate | ||
| 746 | |||
| 747 | .seealso: [](sec:rg), `RGSetScale()` | ||
| 748 | @*/ | ||
| 749 | 775 | PetscErrorCode RGGetScale(RG rg,PetscReal *sfactor) | |
| 750 | { | ||
| 751 |
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775 | PetscFunctionBegin; |
| 752 |
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775 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 753 |
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775 | PetscAssertPointer(sfactor,2); |
| 754 | 775 | *sfactor = rg->sfactor; | |
| 755 |
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775 | PetscFunctionReturn(PETSC_SUCCESS); |
| 756 | } | ||
| 757 | |||
| 758 | /*@ | ||
| 759 | RGPushScale - Sets an additional scaling factor, that will multiply the | ||
| 760 | user-defined scaling factor. | ||
| 761 | |||
| 762 | Logically Collective | ||
| 763 | |||
| 764 | Input Parameters: | ||
| 765 | + rg - the region context | ||
| 766 | - sfactor - the scaling factor | ||
| 767 | |||
| 768 | Notes: | ||
| 769 | The current implementation does not allow pushing several scaling factors. | ||
| 770 | |||
| 771 | This is intended for internal use, for instance in polynomial eigensolvers | ||
| 772 | that use parameter scaling. | ||
| 773 | |||
| 774 | Level: developer | ||
| 775 | |||
| 776 | .seealso: [](sec:rg), `RGPopScale()`, `RGSetScale()` | ||
| 777 | @*/ | ||
| 778 | 713 | PetscErrorCode RGPushScale(RG rg,PetscReal sfactor) | |
| 779 | { | ||
| 780 |
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713 | PetscFunctionBegin; |
| 781 |
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713 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 782 |
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713 | PetscValidLogicalCollectiveReal(rg,sfactor,2); |
| 783 |
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713 | PetscCheck(sfactor>0.0,PetscObjectComm((PetscObject)rg),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of scaling factor. Must be > 0"); |
| 784 |
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713 | PetscCheck(!rg->osfactor,PetscObjectComm((PetscObject)rg),PETSC_ERR_SUP,"Current implementation does not allow pushing several scaling factors"); |
| 785 | 713 | rg->osfactor = rg->sfactor; | |
| 786 | 713 | rg->sfactor *= sfactor; | |
| 787 |
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713 | PetscFunctionReturn(PETSC_SUCCESS); |
| 788 | } | ||
| 789 | |||
| 790 | /*@ | ||
| 791 | RGPopScale - Pops the scaling factor set with `RGPushScale()`. | ||
| 792 | |||
| 793 | Logically Collective | ||
| 794 | |||
| 795 | Input Parameter: | ||
| 796 | . rg - the region context | ||
| 797 | |||
| 798 | Level: developer | ||
| 799 | |||
| 800 | .seealso: [](sec:rg), `RGPushScale()` | ||
| 801 | @*/ | ||
| 802 | 713 | PetscErrorCode RGPopScale(RG rg) | |
| 803 | { | ||
| 804 |
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713 | PetscFunctionBegin; |
| 805 |
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713 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 806 |
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713 | PetscCheck(rg->osfactor,PetscObjectComm((PetscObject)rg),PETSC_ERR_ORDER,"Must call RGPushScale first"); |
| 807 | 713 | rg->sfactor = rg->osfactor; | |
| 808 | 713 | rg->osfactor = 0.0; | |
| 809 |
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713 | PetscFunctionReturn(PETSC_SUCCESS); |
| 810 | } | ||
| 811 | |||
| 812 | /*@ | ||
| 813 | RGDestroy - Destroys `RG` context that was created with `RGCreate()`. | ||
| 814 | |||
| 815 | Collective | ||
| 816 | |||
| 817 | Input Parameter: | ||
| 818 | . rg - the region context | ||
| 819 | |||
| 820 | Level: beginner | ||
| 821 | |||
| 822 | .seealso: [](sec:rg), `RGCreate()` | ||
| 823 | @*/ | ||
| 824 | 9178 | PetscErrorCode RGDestroy(RG *rg) | |
| 825 | { | ||
| 826 |
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9178 | PetscFunctionBegin; |
| 827 |
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9178 | if (!*rg) PetscFunctionReturn(PETSC_SUCCESS); |
| 828 |
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8618 | PetscValidHeaderSpecific(*rg,RG_CLASSID,1); |
| 829 |
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8618 | if (--((PetscObject)*rg)->refct > 0) { *rg = NULL; PetscFunctionReturn(PETSC_SUCCESS); } |
| 830 |
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8424 | PetscTryTypeMethod(*rg,destroy); |
| 831 |
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8424 | PetscCall(PetscHeaderDestroy(rg)); |
| 832 |
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2046 | PetscFunctionReturn(PETSC_SUCCESS); |
| 833 | } | ||
| 834 | |||
| 835 | /*@C | ||
| 836 | RGRegister - Adds a region to the `RG` package. | ||
| 837 | |||
| 838 | Not Collective | ||
| 839 | |||
| 840 | Input Parameters: | ||
| 841 | + name - name of a new user-defined RG | ||
| 842 | - function - routine to create context | ||
| 843 | |||
| 844 | Note: | ||
| 845 | `RGRegister()` may be called multiple times to add several user-defined regions. | ||
| 846 | |||
| 847 | Level: advanced | ||
| 848 | |||
| 849 | .seealso: [](sec:rg), `RGRegisterAll()` | ||
| 850 | @*/ | ||
| 851 | 28580 | PetscErrorCode RGRegister(const char *name,PetscErrorCode (*function)(RG)) | |
| 852 | { | ||
| 853 |
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28580 | PetscFunctionBegin; |
| 854 |
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28580 | PetscCall(RGInitializePackage()); |
| 855 |
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28580 | PetscCall(PetscFunctionListAdd(&RGList,name,function)); |
| 856 |
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6984 | PetscFunctionReturn(PETSC_SUCCESS); |
| 857 | } | ||
| 858 |