| 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: SlepcFinalize() | ||
| 28 | @*/ | ||
| 29 | 8712 | PetscErrorCode RGFinalizePackage(void) | |
| 30 | { | ||
| 31 |
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8712 | PetscFunctionBegin; |
| 32 |
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8712 | PetscCall(PetscFunctionListDestroy(&RGList)); |
| 33 | 8712 | RGPackageInitialized = PETSC_FALSE; | |
| 34 | 8712 | RGRegisterAllCalled = PETSC_FALSE; | |
| 35 |
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8712 | PetscFunctionReturn(PETSC_SUCCESS); |
| 36 | } | ||
| 37 | |||
| 38 | /*@C | ||
| 39 | RGInitializePackage - This function initializes everything in the RG package. | ||
| 40 | It is called from PetscDLLibraryRegister() when using dynamic libraries, and | ||
| 41 | on the first call to RGCreate() when using static libraries. | ||
| 42 | |||
| 43 | Level: developer | ||
| 44 | |||
| 45 | .seealso: SlepcInitialize() | ||
| 46 | @*/ | ||
| 47 | 45196 | PetscErrorCode RGInitializePackage(void) | |
| 48 | { | ||
| 49 | 45196 | char logList[256]; | |
| 50 | 45196 | PetscBool opt,pkg; | |
| 51 | 45196 | PetscClassId classids[1]; | |
| 52 | |||
| 53 |
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45196 | PetscFunctionBegin; |
| 54 |
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45196 | if (RGPackageInitialized) PetscFunctionReturn(PETSC_SUCCESS); |
| 55 | 8712 | RGPackageInitialized = PETSC_TRUE; | |
| 56 | /* Register Classes */ | ||
| 57 |
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8712 | PetscCall(PetscClassIdRegister("Region",&RG_CLASSID)); |
| 58 | /* Register Constructors */ | ||
| 59 |
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8712 | PetscCall(RGRegisterAll()); |
| 60 | /* Process Info */ | ||
| 61 | 8712 | classids[0] = RG_CLASSID; | |
| 62 |
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8712 | PetscCall(PetscInfoProcessClass("rg",1,&classids[0])); |
| 63 | /* Process summary exclusions */ | ||
| 64 |
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8712 | PetscCall(PetscOptionsGetString(NULL,NULL,"-log_exclude",logList,sizeof(logList),&opt)); |
| 65 |
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8712 | if (opt) { |
| 66 |
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84 | PetscCall(PetscStrInList("rg",logList,',',&pkg)); |
| 67 |
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84 | if (pkg) PetscCall(PetscLogEventDeactivateClass(RG_CLASSID)); |
| 68 | } | ||
| 69 | /* Register package finalizer */ | ||
| 70 |
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8712 | PetscCall(PetscRegisterFinalize(RGFinalizePackage)); |
| 71 |
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1704 | PetscFunctionReturn(PETSC_SUCCESS); |
| 72 | } | ||
| 73 | |||
| 74 | /*@ | ||
| 75 | RGCreate - Creates an RG context. | ||
| 76 | |||
| 77 | Collective | ||
| 78 | |||
| 79 | Input Parameter: | ||
| 80 | . comm - MPI communicator | ||
| 81 | |||
| 82 | Output Parameter: | ||
| 83 | . newrg - location to put the RG context | ||
| 84 | |||
| 85 | Level: beginner | ||
| 86 | |||
| 87 | .seealso: RGDestroy(), RG | ||
| 88 | @*/ | ||
| 89 | 10303 | PetscErrorCode RGCreate(MPI_Comm comm,RG *newrg) | |
| 90 | { | ||
| 91 | 10303 | RG rg; | |
| 92 | |||
| 93 |
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10303 | PetscFunctionBegin; |
| 94 |
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10303 | PetscAssertPointer(newrg,2); |
| 95 |
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10303 | PetscCall(RGInitializePackage()); |
| 96 |
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10303 | PetscCall(SlepcHeaderCreate(rg,RG_CLASSID,"RG","Region","RG",comm,RGDestroy,RGView)); |
| 97 | 10303 | rg->complement = PETSC_FALSE; | |
| 98 | 10303 | rg->sfactor = 1.0; | |
| 99 | 10303 | rg->osfactor = 0.0; | |
| 100 | 10303 | rg->data = NULL; | |
| 101 | |||
| 102 | 10303 | *newrg = rg; | |
| 103 |
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10303 | PetscFunctionReturn(PETSC_SUCCESS); |
| 104 | } | ||
| 105 | |||
| 106 | /*@ | ||
| 107 | RGSetOptionsPrefix - Sets the prefix used for searching for all | ||
| 108 | RG options in the database. | ||
| 109 | |||
| 110 | Logically Collective | ||
| 111 | |||
| 112 | Input Parameters: | ||
| 113 | + rg - the region context | ||
| 114 | - prefix - the prefix string to prepend to all RG option requests | ||
| 115 | |||
| 116 | Notes: | ||
| 117 | A hyphen (-) must NOT be given at the beginning of the prefix name. | ||
| 118 | The first character of all runtime options is AUTOMATICALLY the | ||
| 119 | hyphen. | ||
| 120 | |||
| 121 | Level: advanced | ||
| 122 | |||
| 123 | .seealso: RGAppendOptionsPrefix() | ||
| 124 | @*/ | ||
| 125 | 2443 | PetscErrorCode RGSetOptionsPrefix(RG rg,const char *prefix) | |
| 126 | { | ||
| 127 |
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2443 | PetscFunctionBegin; |
| 128 |
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2443 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 129 |
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2443 | PetscCall(PetscObjectSetOptionsPrefix((PetscObject)rg,prefix)); |
| 130 |
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470 | PetscFunctionReturn(PETSC_SUCCESS); |
| 131 | } | ||
| 132 | |||
| 133 | /*@ | ||
| 134 | RGAppendOptionsPrefix - Appends to the prefix used for searching for all | ||
| 135 | RG options in the database. | ||
| 136 | |||
| 137 | Logically Collective | ||
| 138 | |||
| 139 | Input Parameters: | ||
| 140 | + rg - the region context | ||
| 141 | - prefix - the prefix string to prepend to all RG option requests | ||
| 142 | |||
| 143 | Notes: | ||
| 144 | A hyphen (-) must NOT be given at the beginning of the prefix name. | ||
| 145 | The first character of all runtime options is AUTOMATICALLY the hyphen. | ||
| 146 | |||
| 147 | Level: advanced | ||
| 148 | |||
| 149 | .seealso: RGSetOptionsPrefix() | ||
| 150 | @*/ | ||
| 151 | 1964 | PetscErrorCode RGAppendOptionsPrefix(RG rg,const char *prefix) | |
| 152 | { | ||
| 153 |
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1964 | PetscFunctionBegin; |
| 154 |
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1964 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 155 |
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1964 | PetscCall(PetscObjectAppendOptionsPrefix((PetscObject)rg,prefix)); |
| 156 |
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388 | PetscFunctionReturn(PETSC_SUCCESS); |
| 157 | } | ||
| 158 | |||
| 159 | /*@ | ||
| 160 | RGGetOptionsPrefix - Gets the prefix used for searching for all | ||
| 161 | RG options in the database. | ||
| 162 | |||
| 163 | Not Collective | ||
| 164 | |||
| 165 | Input Parameters: | ||
| 166 | . rg - the region context | ||
| 167 | |||
| 168 | Output Parameters: | ||
| 169 | . prefix - pointer to the prefix string used is returned | ||
| 170 | |||
| 171 | Note: | ||
| 172 | On the Fortran side, the user should pass in a string 'prefix' of | ||
| 173 | sufficient length to hold the prefix. | ||
| 174 | |||
| 175 | Level: advanced | ||
| 176 | |||
| 177 | .seealso: RGSetOptionsPrefix(), RGAppendOptionsPrefix() | ||
| 178 | @*/ | ||
| 179 | ✗ | PetscErrorCode RGGetOptionsPrefix(RG rg,const char *prefix[]) | |
| 180 | { | ||
| 181 | ✗ | PetscFunctionBegin; | |
| 182 | ✗ | PetscValidHeaderSpecific(rg,RG_CLASSID,1); | |
| 183 | ✗ | PetscAssertPointer(prefix,2); | |
| 184 | ✗ | PetscCall(PetscObjectGetOptionsPrefix((PetscObject)rg,prefix)); | |
| 185 | ✗ | PetscFunctionReturn(PETSC_SUCCESS); | |
| 186 | } | ||
| 187 | |||
| 188 | /*@ | ||
| 189 | RGSetType - Selects the type for the RG object. | ||
| 190 | |||
| 191 | Logically Collective | ||
| 192 | |||
| 193 | Input Parameters: | ||
| 194 | + rg - the region context | ||
| 195 | - type - a known type | ||
| 196 | |||
| 197 | Level: intermediate | ||
| 198 | |||
| 199 | .seealso: RGGetType() | ||
| 200 | @*/ | ||
| 201 | 11058 | PetscErrorCode RGSetType(RG rg,RGType type) | |
| 202 | { | ||
| 203 | 11058 | PetscErrorCode (*r)(RG); | |
| 204 | 11058 | PetscBool match; | |
| 205 | |||
| 206 |
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11058 | PetscFunctionBegin; |
| 207 |
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11058 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 208 |
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11058 | PetscAssertPointer(type,2); |
| 209 | |||
| 210 |
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11058 | PetscCall(PetscObjectTypeCompare((PetscObject)rg,type,&match)); |
| 211 |
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11058 | if (match) PetscFunctionReturn(PETSC_SUCCESS); |
| 212 | |||
| 213 |
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10429 | PetscCall(PetscFunctionListFind(RGList,type,&r)); |
| 214 |
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10429 | PetscCheck(r,PetscObjectComm((PetscObject)rg),PETSC_ERR_ARG_UNKNOWN_TYPE,"Unable to find requested RG type %s",type); |
| 215 | |||
| 216 |
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10429 | PetscTryTypeMethod(rg,destroy); |
| 217 |
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10429 | PetscCall(PetscMemzero(rg->ops,sizeof(struct _RGOps))); |
| 218 | |||
| 219 |
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10429 | PetscCall(PetscObjectChangeTypeName((PetscObject)rg,type)); |
| 220 |
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10429 | PetscCall((*r)(rg)); |
| 221 |
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2023 | PetscFunctionReturn(PETSC_SUCCESS); |
| 222 | } | ||
| 223 | |||
| 224 | /*@ | ||
| 225 | RGGetType - Gets the RG type name (as a string) from the RG context. | ||
| 226 | |||
| 227 | Not Collective | ||
| 228 | |||
| 229 | Input Parameter: | ||
| 230 | . rg - the region context | ||
| 231 | |||
| 232 | Output Parameter: | ||
| 233 | . type - name of the region | ||
| 234 | |||
| 235 | Level: intermediate | ||
| 236 | |||
| 237 | .seealso: RGSetType() | ||
| 238 | @*/ | ||
| 239 | 50 | PetscErrorCode RGGetType(RG rg,RGType *type) | |
| 240 | { | ||
| 241 |
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50 | PetscFunctionBegin; |
| 242 |
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50 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 243 |
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50 | PetscAssertPointer(type,2); |
| 244 | 50 | *type = ((PetscObject)rg)->type_name; | |
| 245 |
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50 | PetscFunctionReturn(PETSC_SUCCESS); |
| 246 | } | ||
| 247 | |||
| 248 | /*@ | ||
| 249 | RGSetFromOptions - Sets RG options from the options database. | ||
| 250 | |||
| 251 | Collective | ||
| 252 | |||
| 253 | Input Parameters: | ||
| 254 | . rg - the region context | ||
| 255 | |||
| 256 | Notes: | ||
| 257 | To see all options, run your program with the -help option. | ||
| 258 | |||
| 259 | Level: beginner | ||
| 260 | |||
| 261 | .seealso: RGSetOptionsPrefix() | ||
| 262 | @*/ | ||
| 263 | 10315 | PetscErrorCode RGSetFromOptions(RG rg) | |
| 264 | { | ||
| 265 | 10315 | char type[256]; | |
| 266 | 10315 | PetscBool flg; | |
| 267 | 10315 | PetscReal sfactor; | |
| 268 | |||
| 269 |
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10315 | PetscFunctionBegin; |
| 270 |
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10315 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 271 |
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10315 | PetscCall(RGRegisterAll()); |
| 272 |
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30945 | PetscObjectOptionsBegin((PetscObject)rg); |
| 273 |
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11503 | PetscCall(PetscOptionsFList("-rg_type","Region type","RGSetType",RGList,(char*)(((PetscObject)rg)->type_name?((PetscObject)rg)->type_name:RGINTERVAL),type,sizeof(type),&flg)); |
| 274 |
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10315 | if (flg) PetscCall(RGSetType(rg,type)); |
| 275 |
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9181 | else if (!((PetscObject)rg)->type_name) PetscCall(RGSetType(rg,RGINTERVAL)); |
| 276 | |||
| 277 |
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10315 | PetscCall(PetscOptionsBool("-rg_complement","Whether region is complemented or not","RGSetComplement",rg->complement,&rg->complement,NULL)); |
| 278 | |||
| 279 |
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10315 | PetscCall(PetscOptionsReal("-rg_scale","Scaling factor","RGSetScale",1.0,&sfactor,&flg)); |
| 280 |
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10315 | if (flg) PetscCall(RGSetScale(rg,sfactor)); |
| 281 | |||
| 282 |
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10315 | PetscTryTypeMethod(rg,setfromoptions,PetscOptionsObject); |
| 283 |
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10315 | PetscCall(PetscObjectProcessOptionsHandlers((PetscObject)rg,PetscOptionsObject)); |
| 284 |
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10315 | PetscOptionsEnd(); |
| 285 |
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10315 | PetscFunctionReturn(PETSC_SUCCESS); |
| 286 | } | ||
| 287 | |||
| 288 | /*@ | ||
| 289 | RGView - Prints the RG data structure. | ||
| 290 | |||
| 291 | Collective | ||
| 292 | |||
| 293 | Input Parameters: | ||
| 294 | + rg - the region context | ||
| 295 | - viewer - optional visualization context | ||
| 296 | |||
| 297 | Note: | ||
| 298 | The available visualization contexts include | ||
| 299 | + PETSC_VIEWER_STDOUT_SELF - standard output (default) | ||
| 300 | - PETSC_VIEWER_STDOUT_WORLD - synchronized standard | ||
| 301 | output where only the first processor opens | ||
| 302 | the file. All other processors send their | ||
| 303 | data to the first processor to print. | ||
| 304 | |||
| 305 | The user can open an alternative visualization context with | ||
| 306 | PetscViewerASCIIOpen() - output to a specified file. | ||
| 307 | |||
| 308 | Level: beginner | ||
| 309 | |||
| 310 | .seealso: RGCreate() | ||
| 311 | @*/ | ||
| 312 | 209 | PetscErrorCode RGView(RG rg,PetscViewer viewer) | |
| 313 | { | ||
| 314 | 209 | PetscBool isdraw,isascii; | |
| 315 | |||
| 316 |
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209 | PetscFunctionBegin; |
| 317 |
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209 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 318 |
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209 | if (!viewer) PetscCall(PetscViewerASCIIGetStdout(PetscObjectComm((PetscObject)rg),&viewer)); |
| 319 |
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209 | PetscValidHeaderSpecific(viewer,PETSC_VIEWER_CLASSID,2); |
| 320 |
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209 | PetscCheckSameComm(rg,1,viewer,2); |
| 321 |
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209 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERDRAW,&isdraw)); |
| 322 |
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209 | PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&isascii)); |
| 323 |
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209 | if (isascii) { |
| 324 |
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169 | PetscCall(PetscObjectPrintClassNamePrefixType((PetscObject)rg,viewer)); |
| 325 |
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169 | PetscCall(PetscViewerASCIIPushTab(viewer)); |
| 326 |
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169 | PetscTryTypeMethod(rg,view,viewer); |
| 327 |
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169 | PetscCall(PetscViewerASCIIPopTab(viewer)); |
| 328 |
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169 | if (rg->complement) PetscCall(PetscViewerASCIIPrintf(viewer," selected region is the complement of the specified one\n")); |
| 329 |
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169 | if (rg->sfactor!=1.0) PetscCall(PetscViewerASCIIPrintf(viewer," scaling factor = %g\n",(double)rg->sfactor)); |
| 330 |
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40 | } else if (isdraw) PetscTryTypeMethod(rg,view,viewer); |
| 331 |
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37 | PetscFunctionReturn(PETSC_SUCCESS); |
| 332 | } | ||
| 333 | |||
| 334 | /*@ | ||
| 335 | RGViewFromOptions - View from options | ||
| 336 | |||
| 337 | Collective | ||
| 338 | |||
| 339 | Input Parameters: | ||
| 340 | + rg - the region context | ||
| 341 | . obj - optional object | ||
| 342 | - name - command line option | ||
| 343 | |||
| 344 | Level: intermediate | ||
| 345 | |||
| 346 | .seealso: RGView(), RGCreate() | ||
| 347 | @*/ | ||
| 348 | 13211 | PetscErrorCode RGViewFromOptions(RG rg,PetscObject obj,const char name[]) | |
| 349 | { | ||
| 350 |
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13211 | PetscFunctionBegin; |
| 351 |
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13211 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 352 |
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13211 | PetscCall(PetscObjectViewFromOptions((PetscObject)rg,obj,name)); |
| 353 |
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2550 | PetscFunctionReturn(PETSC_SUCCESS); |
| 354 | } | ||
| 355 | |||
| 356 | /*@ | ||
| 357 | RGIsTrivial - Whether it is the trivial region (whole complex plane). | ||
| 358 | |||
| 359 | Not Collective | ||
| 360 | |||
| 361 | Input Parameter: | ||
| 362 | . rg - the region context | ||
| 363 | |||
| 364 | Output Parameter: | ||
| 365 | . trivial - true if the region is equal to the whole complex plane, e.g., | ||
| 366 | an interval region with all four endpoints unbounded or an | ||
| 367 | ellipse with infinite radius. | ||
| 368 | |||
| 369 | Level: beginner | ||
| 370 | |||
| 371 | .seealso: RGCheckInside() | ||
| 372 | @*/ | ||
| 373 | 84859 | PetscErrorCode RGIsTrivial(RG rg,PetscBool *trivial) | |
| 374 | { | ||
| 375 |
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84859 | PetscFunctionBegin; |
| 376 |
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84859 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 377 |
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84859 | PetscValidType(rg,1); |
| 378 |
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84859 | PetscAssertPointer(trivial,2); |
| 379 | 84859 | *trivial = PETSC_FALSE; | |
| 380 |
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84859 | PetscTryTypeMethod(rg,istrivial,trivial); |
| 381 |
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16379 | PetscFunctionReturn(PETSC_SUCCESS); |
| 382 | } | ||
| 383 | |||
| 384 | /*@ | ||
| 385 | RGCheckInside - Determines if a set of given points are inside the region or not. | ||
| 386 | |||
| 387 | Not Collective | ||
| 388 | |||
| 389 | Input Parameters: | ||
| 390 | + rg - the region context | ||
| 391 | . n - number of points to check | ||
| 392 | . ar - array of real parts | ||
| 393 | - ai - array of imaginary parts | ||
| 394 | |||
| 395 | Output Parameter: | ||
| 396 | . inside - array of results (1=inside, 0=on the contour, -1=outside) | ||
| 397 | |||
| 398 | Note: | ||
| 399 | The point a is expressed as a couple of PetscScalar variables ar,ai. | ||
| 400 | If built with complex scalars, the point is supposed to be stored in ar, | ||
| 401 | otherwise ar,ai contain the real and imaginary parts, respectively. | ||
| 402 | |||
| 403 | If a scaling factor was set, the points are scaled before checking. | ||
| 404 | |||
| 405 | Level: intermediate | ||
| 406 | |||
| 407 | .seealso: RGSetScale(), RGSetComplement() | ||
| 408 | @*/ | ||
| 409 | 916711 | PetscErrorCode RGCheckInside(RG rg,PetscInt n,PetscScalar *ar,PetscScalar *ai,PetscInt *inside) | |
| 410 | { | ||
| 411 | 916711 | PetscReal px,py; | |
| 412 | 916711 | PetscInt i; | |
| 413 | |||
| 414 |
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916711 | PetscFunctionBegin; |
| 415 |
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916711 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 416 |
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916711 | PetscValidType(rg,1); |
| 417 |
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916711 | PetscAssertPointer(ar,3); |
| 418 | #if !defined(PETSC_USE_COMPLEX) | ||
| 419 |
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335838 | PetscAssertPointer(ai,4); |
| 420 | #endif | ||
| 421 |
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916711 | PetscAssertPointer(inside,5); |
| 422 | |||
| 423 |
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2756950 | for (i=0;i<n;i++) { |
| 424 | #if defined(PETSC_USE_COMPLEX) | ||
| 425 | 1170066 | px = PetscRealPart(ar[i]); | |
| 426 | 1170066 | py = PetscImaginaryPart(ar[i]); | |
| 427 | #else | ||
| 428 | 670173 | px = ar[i]; | |
| 429 | 670173 | py = ai[i]; | |
| 430 | #endif | ||
| 431 |
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1840239 | if (PetscUnlikely(rg->sfactor != 1.0)) { |
| 432 | 20 | px /= rg->sfactor; | |
| 433 | 20 | py /= rg->sfactor; | |
| 434 | } | ||
| 435 |
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1840239 | PetscUseTypeMethod(rg,checkinside,px,py,inside+i); |
| 436 |
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1840239 | if (PetscUnlikely(rg->complement)) inside[i] = -inside[i]; |
| 437 | } | ||
| 438 |
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180910 | PetscFunctionReturn(PETSC_SUCCESS); |
| 439 | } | ||
| 440 | |||
| 441 | /*@ | ||
| 442 | RGIsAxisymmetric - Determines if the region is symmetric with respect | ||
| 443 | to the real or imaginary axis. | ||
| 444 | |||
| 445 | Not Collective | ||
| 446 | |||
| 447 | Input Parameters: | ||
| 448 | + rg - the region context | ||
| 449 | - vertical - true if symmetry must be checked against the vertical axis | ||
| 450 | |||
| 451 | Output Parameter: | ||
| 452 | . symm - true if the region is axisymmetric | ||
| 453 | |||
| 454 | Note: | ||
| 455 | If the vertical argument is true, symmetry is checked with respect to | ||
| 456 | the vertical axis, otherwise with respect to the horizontal axis. | ||
| 457 | |||
| 458 | Level: intermediate | ||
| 459 | |||
| 460 | .seealso: RGCanUseConjugates() | ||
| 461 | @*/ | ||
| 462 | 243 | PetscErrorCode RGIsAxisymmetric(RG rg,PetscBool vertical,PetscBool *symm) | |
| 463 | { | ||
| 464 |
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243 | PetscFunctionBegin; |
| 465 |
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243 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 466 |
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243 | PetscValidType(rg,1); |
| 467 |
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243 | PetscAssertPointer(symm,3); |
| 468 | 243 | *symm = PETSC_FALSE; | |
| 469 |
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243 | PetscTryTypeMethod(rg,isaxisymmetric,vertical,symm); |
| 470 |
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51 | PetscFunctionReturn(PETSC_SUCCESS); |
| 471 | } | ||
| 472 | |||
| 473 | /*@ | ||
| 474 | RGCanUseConjugates - Used in contour integral methods to determine whether | ||
| 475 | half of integration points can be avoided (use their conjugates). | ||
| 476 | |||
| 477 | Not Collective | ||
| 478 | |||
| 479 | Input Parameters: | ||
| 480 | + rg - the region context | ||
| 481 | - realmats - true if the problem matrices are real | ||
| 482 | |||
| 483 | Output Parameter: | ||
| 484 | . useconj - whether it is possible to use conjugates | ||
| 485 | |||
| 486 | Notes: | ||
| 487 | If some integration points are the conjugates of other points, then the | ||
| 488 | associated computational cost can be saved. This depends on the problem | ||
| 489 | matrices being real and also the region being symmetric with respect to | ||
| 490 | the horizontal axis. The result is false if using real arithmetic or | ||
| 491 | in the case of a flat region (height equal to zero). | ||
| 492 | |||
| 493 | Level: developer | ||
| 494 | |||
| 495 | .seealso: RGIsAxisymmetric() | ||
| 496 | @*/ | ||
| 497 | 557 | PetscErrorCode RGCanUseConjugates(RG rg,PetscBool realmats,PetscBool *useconj) | |
| 498 | { | ||
| 499 | #if defined(PETSC_USE_COMPLEX) | ||
| 500 | 432 | PetscReal c,d; | |
| 501 | 432 | PetscBool isaxisymm; | |
| 502 | #endif | ||
| 503 | |||
| 504 |
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557 | PetscFunctionBegin; |
| 505 |
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557 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 506 |
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557 | PetscValidType(rg,1); |
| 507 |
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557 | PetscAssertPointer(useconj,3); |
| 508 | 557 | *useconj = PETSC_FALSE; | |
| 509 | #if defined(PETSC_USE_COMPLEX) | ||
| 510 |
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432 | if (realmats) { |
| 511 |
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128 | PetscCall(RGIsAxisymmetric(rg,PETSC_FALSE,&isaxisymm)); |
| 512 |
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128 | if (isaxisymm) { |
| 513 |
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123 | PetscCall(RGComputeBoundingBox(rg,NULL,NULL,&c,&d)); |
| 514 |
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123 | if (c!=d) *useconj = PETSC_TRUE; |
| 515 | } | ||
| 516 | } | ||
| 517 | #endif | ||
| 518 |
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215 | PetscFunctionReturn(PETSC_SUCCESS); |
| 519 | } | ||
| 520 | |||
| 521 | /*@ | ||
| 522 | RGComputeContour - Computes the coordinates of several points lying on the | ||
| 523 | contour of the region. | ||
| 524 | |||
| 525 | Not Collective | ||
| 526 | |||
| 527 | Input Parameters: | ||
| 528 | + rg - the region context | ||
| 529 | - n - number of points to compute | ||
| 530 | |||
| 531 | Output Parameters: | ||
| 532 | + cr - location to store real parts | ||
| 533 | - ci - location to store imaginary parts | ||
| 534 | |||
| 535 | Notes: | ||
| 536 | In real scalars, either cr or ci can be NULL (but not both). In complex | ||
| 537 | scalars, the coordinates are stored in cr, which cannot be NULL (ci is | ||
| 538 | not referenced). | ||
| 539 | |||
| 540 | Level: intermediate | ||
| 541 | |||
| 542 | .seealso: RGComputeBoundingBox() | ||
| 543 | @*/ | ||
| 544 | 1080 | PetscErrorCode RGComputeContour(RG rg,PetscInt n,PetscScalar cr[],PetscScalar ci[]) | |
| 545 | { | ||
| 546 | 1080 | PetscInt i; | |
| 547 | |||
| 548 |
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1080 | PetscFunctionBegin; |
| 549 |
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1080 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 550 |
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1080 | PetscValidType(rg,1); |
| 551 | #if defined(PETSC_USE_COMPLEX) | ||
| 552 |
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753 | PetscAssertPointer(cr,3); |
| 553 | #else | ||
| 554 |
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327 | PetscCheck(cr || ci,PetscObjectComm((PetscObject)rg),PETSC_ERR_SUP,"cr and ci cannot be NULL simultaneously"); |
| 555 | #endif | ||
| 556 |
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1080 | PetscCheck(!rg->complement,PetscObjectComm((PetscObject)rg),PETSC_ERR_SUP,"Cannot compute contour of region with complement flag set"); |
| 557 |
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1080 | PetscUseTypeMethod(rg,computecontour,n,cr,ci); |
| 558 |
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1739726 | for (i=0;i<n;i++) { |
| 559 |
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1738646 | if (cr) cr[i] *= rg->sfactor; |
| 560 |
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1738646 | if (ci) ci[i] *= rg->sfactor; |
| 561 | } | ||
| 562 |
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|
215 | PetscFunctionReturn(PETSC_SUCCESS); |
| 563 | } | ||
| 564 | |||
| 565 | /*@ | ||
| 566 | RGComputeBoundingBox - Determines the endpoints of a rectangle in the complex plane that | ||
| 567 | contains the region. | ||
| 568 | |||
| 569 | Not Collective | ||
| 570 | |||
| 571 | Input Parameter: | ||
| 572 | . rg - the region context | ||
| 573 | |||
| 574 | Output Parameters: | ||
| 575 | + a - left endpoint of the bounding box in the real axis | ||
| 576 | . b - right endpoint of the bounding box in the real axis | ||
| 577 | . c - bottom endpoint of the bounding box in the imaginary axis | ||
| 578 | - d - top endpoint of the bounding box in the imaginary axis | ||
| 579 | |||
| 580 | Notes: | ||
| 581 | The bounding box is defined as [a,b]x[c,d]. In regions that are not bounded (e.g. an | ||
| 582 | open interval) or with the complement flag set, it makes no sense to compute a bounding | ||
| 583 | box, so the return values are infinite. | ||
| 584 | |||
| 585 | Level: intermediate | ||
| 586 | |||
| 587 | .seealso: RGComputeContour() | ||
| 588 | @*/ | ||
| 589 | 249 | PetscErrorCode RGComputeBoundingBox(RG rg,PetscReal *a,PetscReal *b,PetscReal *c,PetscReal *d) | |
| 590 | { | ||
| 591 |
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249 | PetscFunctionBegin; |
| 592 |
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249 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 593 |
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249 | PetscValidType(rg,1); |
| 594 | |||
| 595 |
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249 | if (rg->complement) { /* cannot compute bounding box */ |
| 596 | ✗ | if (a) *a = -PETSC_MAX_REAL; | |
| 597 | ✗ | if (b) *b = PETSC_MAX_REAL; | |
| 598 | ✗ | if (c) *c = -PETSC_MAX_REAL; | |
| 599 | ✗ | if (d) *d = PETSC_MAX_REAL; | |
| 600 | } else { | ||
| 601 |
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249 | PetscUseTypeMethod(rg,computebbox,a,b,c,d); |
| 602 |
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249 | if (a && *a!=-PETSC_MAX_REAL) *a *= rg->sfactor; |
| 603 |
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249 | if (b && *b!= PETSC_MAX_REAL) *b *= rg->sfactor; |
| 604 |
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249 | if (c && *c!=-PETSC_MAX_REAL) *c *= rg->sfactor; |
| 605 |
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249 | if (d && *d!= PETSC_MAX_REAL) *d *= rg->sfactor; |
| 606 | } | ||
| 607 |
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51 | PetscFunctionReturn(PETSC_SUCCESS); |
| 608 | } | ||
| 609 | |||
| 610 | /*@ | ||
| 611 | RGComputeQuadrature - Computes the values of the parameters used in a | ||
| 612 | quadrature rule for a contour integral around the boundary of the region. | ||
| 613 | |||
| 614 | Not Collective | ||
| 615 | |||
| 616 | Input Parameters: | ||
| 617 | + rg - the region context | ||
| 618 | . quad - the type of quadrature | ||
| 619 | - n - number of quadrature points to compute | ||
| 620 | |||
| 621 | Output Parameters: | ||
| 622 | + z - quadrature points | ||
| 623 | . zn - normalized quadrature points | ||
| 624 | - w - quadrature weights | ||
| 625 | |||
| 626 | Notes: | ||
| 627 | In complex scalars, the values returned in z are often the same as those | ||
| 628 | computed by RGComputeContour(), but this is not the case in real scalars | ||
| 629 | where all output arguments are real. | ||
| 630 | |||
| 631 | The computed values change for different quadrature rules (trapezoidal | ||
| 632 | or Chebyshev). | ||
| 633 | |||
| 634 | Level: intermediate | ||
| 635 | |||
| 636 | .seealso: RGComputeContour() | ||
| 637 | @*/ | ||
| 638 | 670 | PetscErrorCode RGComputeQuadrature(RG rg,RGQuadRule quad,PetscInt n,PetscScalar z[],PetscScalar zn[],PetscScalar w[]) | |
| 639 | { | ||
| 640 |
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670 | PetscFunctionBegin; |
| 641 |
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670 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 642 |
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670 | PetscValidType(rg,1); |
| 643 |
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670 | PetscAssertPointer(z,4); |
| 644 |
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670 | PetscAssertPointer(zn,5); |
| 645 |
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670 | PetscAssertPointer(w,6); |
| 646 | |||
| 647 |
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670 | PetscCall(RGComputeContour(rg,n,z,NULL)); |
| 648 |
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670 | PetscUseTypeMethod(rg,computequadrature,quad,n,z,zn,w); |
| 649 |
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139 | PetscFunctionReturn(PETSC_SUCCESS); |
| 650 | } | ||
| 651 | |||
| 652 | /*@ | ||
| 653 | RGSetComplement - Sets a flag to indicate that the region is the complement | ||
| 654 | of the specified one. | ||
| 655 | |||
| 656 | Logically Collective | ||
| 657 | |||
| 658 | Input Parameters: | ||
| 659 | + rg - the region context | ||
| 660 | - flg - the boolean flag | ||
| 661 | |||
| 662 | Options Database Key: | ||
| 663 | . -rg_complement <bool> - Activate/deactivate the complementation of the region | ||
| 664 | |||
| 665 | Level: intermediate | ||
| 666 | |||
| 667 | .seealso: RGGetComplement() | ||
| 668 | @*/ | ||
| 669 | 10 | PetscErrorCode RGSetComplement(RG rg,PetscBool flg) | |
| 670 | { | ||
| 671 |
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10 | PetscFunctionBegin; |
| 672 |
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10 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 673 |
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|
10 | PetscValidLogicalCollectiveBool(rg,flg,2); |
| 674 | 10 | rg->complement = flg; | |
| 675 |
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10 | PetscFunctionReturn(PETSC_SUCCESS); |
| 676 | } | ||
| 677 | |||
| 678 | /*@ | ||
| 679 | RGGetComplement - Gets a flag that indicates whether the region | ||
| 680 | is complemented or not. | ||
| 681 | |||
| 682 | Not Collective | ||
| 683 | |||
| 684 | Input Parameter: | ||
| 685 | . rg - the region context | ||
| 686 | |||
| 687 | Output Parameter: | ||
| 688 | . flg - the flag | ||
| 689 | |||
| 690 | Level: intermediate | ||
| 691 | |||
| 692 | .seealso: RGSetComplement() | ||
| 693 | @*/ | ||
| 694 | 537 | PetscErrorCode RGGetComplement(RG rg,PetscBool *flg) | |
| 695 | { | ||
| 696 |
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537 | PetscFunctionBegin; |
| 697 |
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537 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 698 |
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537 | PetscAssertPointer(flg,2); |
| 699 | 537 | *flg = rg->complement; | |
| 700 |
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537 | PetscFunctionReturn(PETSC_SUCCESS); |
| 701 | } | ||
| 702 | |||
| 703 | /*@ | ||
| 704 | RGSetScale - Sets the scaling factor to be used when checking that a | ||
| 705 | point is inside the region and when computing the contour. | ||
| 706 | |||
| 707 | Logically Collective | ||
| 708 | |||
| 709 | Input Parameters: | ||
| 710 | + rg - the region context | ||
| 711 | - sfactor - the scaling factor | ||
| 712 | |||
| 713 | Options Database Key: | ||
| 714 | . -rg_scale <real> - Sets the scaling factor | ||
| 715 | |||
| 716 | Level: advanced | ||
| 717 | |||
| 718 | .seealso: RGGetScale(), RGCheckInside() | ||
| 719 | @*/ | ||
| 720 | 10 | PetscErrorCode RGSetScale(RG rg,PetscReal sfactor) | |
| 721 | { | ||
| 722 |
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10 | PetscFunctionBegin; |
| 723 |
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10 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 724 |
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10 | PetscValidLogicalCollectiveReal(rg,sfactor,2); |
| 725 |
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10 | if (sfactor == (PetscReal)PETSC_DEFAULT || sfactor == (PetscReal)PETSC_DECIDE) sfactor = 1.0; |
| 726 |
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10 | PetscCheck(sfactor>0.0,PetscObjectComm((PetscObject)rg),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of scaling factor. Must be > 0"); |
| 727 | 10 | rg->sfactor = sfactor; | |
| 728 |
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10 | PetscFunctionReturn(PETSC_SUCCESS); |
| 729 | } | ||
| 730 | |||
| 731 | /*@ | ||
| 732 | RGGetScale - Gets the scaling factor. | ||
| 733 | |||
| 734 | Not Collective | ||
| 735 | |||
| 736 | Input Parameter: | ||
| 737 | . rg - the region context | ||
| 738 | |||
| 739 | Output Parameter: | ||
| 740 | . sfactor - the scaling factor | ||
| 741 | |||
| 742 | Level: advanced | ||
| 743 | |||
| 744 | .seealso: RGSetScale() | ||
| 745 | @*/ | ||
| 746 | 965 | PetscErrorCode RGGetScale(RG rg,PetscReal *sfactor) | |
| 747 | { | ||
| 748 |
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965 | PetscFunctionBegin; |
| 749 |
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965 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 750 |
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965 | PetscAssertPointer(sfactor,2); |
| 751 | 965 | *sfactor = rg->sfactor; | |
| 752 |
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965 | PetscFunctionReturn(PETSC_SUCCESS); |
| 753 | } | ||
| 754 | |||
| 755 | /*@ | ||
| 756 | RGPushScale - Sets an additional scaling factor, that will multiply the | ||
| 757 | user-defined scaling factor. | ||
| 758 | |||
| 759 | Logically Collective | ||
| 760 | |||
| 761 | Input Parameters: | ||
| 762 | + rg - the region context | ||
| 763 | - sfactor - the scaling factor | ||
| 764 | |||
| 765 | Notes: | ||
| 766 | The current implementation does not allow pushing several scaling factors. | ||
| 767 | |||
| 768 | This is intended for internal use, for instance in polynomial eigensolvers | ||
| 769 | that use parameter scaling. | ||
| 770 | |||
| 771 | Level: developer | ||
| 772 | |||
| 773 | .seealso: RGPopScale(), RGSetScale() | ||
| 774 | @*/ | ||
| 775 | 881 | PetscErrorCode RGPushScale(RG rg,PetscReal sfactor) | |
| 776 | { | ||
| 777 |
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881 | PetscFunctionBegin; |
| 778 |
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881 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 779 |
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881 | PetscValidLogicalCollectiveReal(rg,sfactor,2); |
| 780 |
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881 | PetscCheck(sfactor>0.0,PetscObjectComm((PetscObject)rg),PETSC_ERR_ARG_OUTOFRANGE,"Illegal value of scaling factor. Must be > 0"); |
| 781 |
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881 | PetscCheck(!rg->osfactor,PetscObjectComm((PetscObject)rg),PETSC_ERR_SUP,"Current implementation does not allow pushing several scaling factors"); |
| 782 | 881 | rg->osfactor = rg->sfactor; | |
| 783 | 881 | rg->sfactor *= sfactor; | |
| 784 |
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881 | PetscFunctionReturn(PETSC_SUCCESS); |
| 785 | } | ||
| 786 | |||
| 787 | /*@ | ||
| 788 | RGPopScale - Pops the scaling factor set with RGPushScale(). | ||
| 789 | |||
| 790 | Logically Collective | ||
| 791 | |||
| 792 | Input Parameter: | ||
| 793 | . rg - the region context | ||
| 794 | |||
| 795 | Level: developer | ||
| 796 | |||
| 797 | .seealso: RGPushScale() | ||
| 798 | @*/ | ||
| 799 | 881 | PetscErrorCode RGPopScale(RG rg) | |
| 800 | { | ||
| 801 |
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881 | PetscFunctionBegin; |
| 802 |
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881 | PetscValidHeaderSpecific(rg,RG_CLASSID,1); |
| 803 |
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881 | PetscCheck(rg->osfactor,PetscObjectComm((PetscObject)rg),PETSC_ERR_ORDER,"Must call RGPushScale first"); |
| 804 | 881 | rg->sfactor = rg->osfactor; | |
| 805 | 881 | rg->osfactor = 0.0; | |
| 806 |
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881 | PetscFunctionReturn(PETSC_SUCCESS); |
| 807 | } | ||
| 808 | |||
| 809 | /*@ | ||
| 810 | RGDestroy - Destroys RG context that was created with RGCreate(). | ||
| 811 | |||
| 812 | Collective | ||
| 813 | |||
| 814 | Input Parameter: | ||
| 815 | . rg - the region context | ||
| 816 | |||
| 817 | Level: beginner | ||
| 818 | |||
| 819 | .seealso: RGCreate() | ||
| 820 | @*/ | ||
| 821 | 11177 | PetscErrorCode RGDestroy(RG *rg) | |
| 822 | { | ||
| 823 |
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11177 | PetscFunctionBegin; |
| 824 |
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11177 | if (!*rg) PetscFunctionReturn(PETSC_SUCCESS); |
| 825 |
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10545 | PetscValidHeaderSpecific(*rg,RG_CLASSID,1); |
| 826 |
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10545 | if (--((PetscObject)*rg)->refct > 0) { *rg = NULL; PetscFunctionReturn(PETSC_SUCCESS); } |
| 827 |
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10303 | PetscTryTypeMethod(*rg,destroy); |
| 828 |
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10303 | PetscCall(PetscHeaderDestroy(rg)); |
| 829 |
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1999 | PetscFunctionReturn(PETSC_SUCCESS); |
| 830 | } | ||
| 831 | |||
| 832 | /*@C | ||
| 833 | RGRegister - Adds a region to the RG package. | ||
| 834 | |||
| 835 | Not Collective | ||
| 836 | |||
| 837 | Input Parameters: | ||
| 838 | + name - name of a new user-defined RG | ||
| 839 | - function - routine to create context | ||
| 840 | |||
| 841 | Notes: | ||
| 842 | RGRegister() may be called multiple times to add several user-defined regions. | ||
| 843 | |||
| 844 | Level: advanced | ||
| 845 | |||
| 846 | .seealso: RGRegisterAll() | ||
| 847 | @*/ | ||
| 848 | 34848 | PetscErrorCode RGRegister(const char *name,PetscErrorCode (*function)(RG)) | |
| 849 | { | ||
| 850 |
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34848 | PetscFunctionBegin; |
| 851 |
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34848 | PetscCall(RGInitializePackage()); |
| 852 |
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34848 | PetscCall(PetscFunctionListAdd(&RGList,name,function)); |
| 853 |
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6816 | PetscFunctionReturn(PETSC_SUCCESS); |
| 854 | } | ||
| 855 |