1 #include <petsc/private/petscfeimpl.h> /*I "petscfe.h" I*/ 2 3 static PetscErrorCode PetscSpaceTensorCreateSubspace(PetscSpace space, PetscInt Nvs, PetscSpace *subspace) 4 { 5 PetscInt degree; 6 const char *prefix; 7 PetscErrorCode ierr; 8 9 PetscFunctionBegin; 10 ierr = PetscSpaceGetDegree(space, °ree, NULL);CHKERRQ(ierr); 11 ierr = PetscObjectGetOptionsPrefix((PetscObject)space, &prefix);CHKERRQ(ierr); 12 ierr = PetscSpaceCreate(PetscObjectComm((PetscObject)space), subspace);CHKERRQ(ierr); 13 ierr = PetscSpaceSetType(*subspace, PETSCSPACEPOLYNOMIAL);CHKERRQ(ierr); 14 ierr = PetscSpaceSetNumVariables(*subspace, Nvs);CHKERRQ(ierr); 15 ierr = PetscSpaceSetNumComponents(*subspace, 1);CHKERRQ(ierr); 16 ierr = PetscSpaceSetDegree(*subspace, degree, PETSC_DETERMINE);CHKERRQ(ierr); 17 ierr = PetscObjectSetOptionsPrefix((PetscObject)*subspace, prefix);CHKERRQ(ierr); 18 ierr = PetscObjectAppendOptionsPrefix((PetscObject)*subspace, "subspace_");CHKERRQ(ierr); 19 PetscFunctionReturn(0); 20 } 21 22 static PetscErrorCode PetscSpaceSetFromOptions_Tensor(PetscOptionItems *PetscOptionsObject,PetscSpace sp) 23 { 24 PetscSpace_Tensor *tens = (PetscSpace_Tensor *) sp->data; 25 PetscInt Ns, Nc, i, Nv, deg; 26 PetscBool uniform = PETSC_TRUE; 27 PetscErrorCode ierr; 28 29 PetscFunctionBegin; 30 ierr = PetscSpaceGetNumVariables(sp, &Nv);CHKERRQ(ierr); 31 if (!Nv) PetscFunctionReturn(0); 32 ierr = PetscSpaceGetNumComponents(sp, &Nc);CHKERRQ(ierr); 33 ierr = PetscSpaceTensorGetNumSubspaces(sp, &Ns);CHKERRQ(ierr); 34 ierr = PetscSpaceGetDegree(sp, °, NULL);CHKERRQ(ierr); 35 if (Ns > 1) { 36 PetscSpace s0; 37 38 ierr = PetscSpaceTensorGetSubspace(sp, 0, &s0);CHKERRQ(ierr); 39 for (i = 1; i < Ns; i++) { 40 PetscSpace si; 41 42 ierr = PetscSpaceTensorGetSubspace(sp, i, &si);CHKERRQ(ierr); 43 if (si != s0) {uniform = PETSC_FALSE; break;} 44 } 45 } 46 Ns = (Ns == PETSC_DEFAULT) ? PetscMax(Nv,1) : Ns; 47 ierr = PetscOptionsHead(PetscOptionsObject,"PetscSpace tensor options");CHKERRQ(ierr); 48 ierr = PetscOptionsInt("-petscspace_tensor_spaces", "The number of subspaces", "PetscSpaceTensorSetNumSubspaces", Ns, &Ns, NULL);CHKERRQ(ierr); 49 ierr = PetscOptionsBool("-petscspace_tensor_uniform", "Subspaces are identical", "PetscSpaceTensorSetFromOptions", uniform, &uniform, NULL);CHKERRQ(ierr); 50 ierr = PetscOptionsTail();CHKERRQ(ierr); 51 if (Ns < 0 || (Nv > 0 && Ns == 0)) SETERRQ1(PetscObjectComm((PetscObject)sp),PETSC_ERR_ARG_OUTOFRANGE,"Cannot have a tensor space made up of %D spaces\n",Ns); 52 if (Nv > 0 && Ns > Nv) SETERRQ2(PetscObjectComm((PetscObject)sp),PETSC_ERR_ARG_OUTOFRANGE,"Cannot have a tensor space with %D subspaces over %D variables\n", Ns, Nv); 53 if (Ns != tens->numSpaces) {ierr = PetscSpaceTensorSetNumSubspaces(sp, Ns);CHKERRQ(ierr);} 54 if (uniform) { 55 PetscInt Nvs = Nv / Ns; 56 PetscSpace subspace; 57 58 if (Nv % Ns) SETERRQ2(PetscObjectComm((PetscObject)sp),PETSC_ERR_ARG_WRONG,"Cannot use %D uniform subspaces for %D variable space\n", Ns, Nv); 59 ierr = PetscSpaceTensorGetSubspace(sp, 0, &subspace);CHKERRQ(ierr); 60 if (!subspace) {ierr = PetscSpaceTensorCreateSubspace(sp, Nvs, &subspace);CHKERRQ(ierr);} 61 else {ierr = PetscObjectReference((PetscObject)subspace);CHKERRQ(ierr);} 62 ierr = PetscSpaceSetFromOptions(subspace);CHKERRQ(ierr); 63 for (i = 0; i < Ns; i++) {ierr = PetscSpaceTensorSetSubspace(sp, i, subspace);CHKERRQ(ierr);} 64 ierr = PetscSpaceDestroy(&subspace);CHKERRQ(ierr); 65 } else { 66 for (i = 0; i < Ns; i++) { 67 PetscSpace subspace; 68 69 ierr = PetscSpaceTensorGetSubspace(sp, i, &subspace);CHKERRQ(ierr); 70 if (!subspace) { 71 char tprefix[128]; 72 73 ierr = PetscSpaceTensorCreateSubspace(sp, 1, &subspace);CHKERRQ(ierr); 74 ierr = PetscSNPrintf(tprefix, 128, "%d_",(int)i);CHKERRQ(ierr); 75 ierr = PetscObjectAppendOptionsPrefix((PetscObject)subspace, tprefix);CHKERRQ(ierr); 76 } else { 77 ierr = PetscObjectReference((PetscObject)subspace);CHKERRQ(ierr); 78 } 79 ierr = PetscSpaceSetFromOptions(subspace);CHKERRQ(ierr); 80 ierr = PetscSpaceTensorSetSubspace(sp, i, subspace);CHKERRQ(ierr); 81 ierr = PetscSpaceDestroy(&subspace);CHKERRQ(ierr); 82 } 83 } 84 PetscFunctionReturn(0); 85 } 86 87 static PetscErrorCode PetscSpaceTensorView_Ascii(PetscSpace sp, PetscViewer viewer) 88 { 89 PetscSpace_Tensor *tens = (PetscSpace_Tensor *) sp->data; 90 PetscBool uniform = PETSC_TRUE; 91 PetscInt Ns = tens->numSpaces, i, n; 92 PetscErrorCode ierr; 93 94 PetscFunctionBegin; 95 for (i = 1; i < Ns; i++) { 96 if (tens->spaces[i] != tens->spaces[0]) {uniform = PETSC_FALSE; break;} 97 } 98 if (uniform) {ierr = PetscViewerASCIIPrintf(viewer, "Tensor space of %D subspaces (all identical)\n", Ns);CHKERRQ(ierr); 99 } else {ierr = PetscViewerASCIIPrintf(viewer, "Tensor space of %D subspaces\n", Ns);CHKERRQ(ierr);} 100 n = uniform ? 1 : Ns; 101 ierr = PetscViewerASCIIPushTab(viewer);CHKERRQ(ierr); 102 for (i = 0; i < n; i++) { 103 ierr = PetscSpaceView(tens->spaces[i], viewer);CHKERRQ(ierr); 104 } 105 ierr = PetscViewerASCIIPushTab(viewer);CHKERRQ(ierr); 106 PetscFunctionReturn(0); 107 } 108 109 static PetscErrorCode PetscSpaceView_Tensor(PetscSpace sp, PetscViewer viewer) 110 { 111 PetscBool iascii; 112 PetscErrorCode ierr; 113 114 PetscFunctionBegin; 115 PetscValidHeaderSpecific(sp, PETSCSPACE_CLASSID, 1); 116 PetscValidHeaderSpecific(viewer, PETSC_VIEWER_CLASSID, 2); 117 ierr = PetscObjectTypeCompare((PetscObject) viewer, PETSCVIEWERASCII, &iascii);CHKERRQ(ierr); 118 if (iascii) {ierr = PetscSpaceTensorView_Ascii(sp, viewer);CHKERRQ(ierr);} 119 PetscFunctionReturn(0); 120 } 121 122 static PetscErrorCode PetscSpaceSetUp_Tensor(PetscSpace sp) 123 { 124 PetscSpace_Tensor *tens = (PetscSpace_Tensor *) sp->data; 125 PetscInt Nv, Ns, i; 126 PetscBool uniform = PETSC_TRUE; 127 PetscInt deg, maxDeg; 128 PetscErrorCode ierr; 129 130 PetscFunctionBegin; 131 if (tens->setupCalled) PetscFunctionReturn(0); 132 ierr = PetscSpaceGetNumVariables(sp, &Nv);CHKERRQ(ierr); 133 ierr = PetscSpaceTensorGetNumSubspaces(sp, &Ns);CHKERRQ(ierr); 134 if (Ns == PETSC_DEFAULT) { 135 Ns = Nv; 136 ierr = PetscSpaceTensorSetNumSubspaces(sp, Ns);CHKERRQ(ierr); 137 } 138 if (!Ns) { 139 if (Nv) SETERRQ(PetscObjectComm((PetscObject)sp), PETSC_ERR_ARG_OUTOFRANGE, "Cannot have zero subspaces"); 140 } else { 141 PetscSpace s0; 142 143 if (Nv > 0 && Ns > Nv) SETERRQ2(PetscObjectComm((PetscObject)sp),PETSC_ERR_ARG_OUTOFRANGE,"Cannot have a tensor space with %D subspaces over %D variables\n", Ns, Nv); 144 ierr = PetscSpaceTensorGetSubspace(sp, 0, &s0);CHKERRQ(ierr); 145 for (i = 1; i < Ns; i++) { 146 PetscSpace si; 147 148 ierr = PetscSpaceTensorGetSubspace(sp, i, &si);CHKERRQ(ierr); 149 if (si != s0) {uniform = PETSC_FALSE; break;} 150 } 151 if (uniform) { 152 PetscInt Nvs = Nv / Ns; 153 154 if (Nv % Ns) SETERRQ2(PetscObjectComm((PetscObject)sp),PETSC_ERR_ARG_WRONG,"Cannot use %D uniform subspaces for %D variable space\n", Ns, Nv); 155 if (!s0) {ierr = PetscSpaceTensorCreateSubspace(sp, Nvs, &s0);CHKERRQ(ierr);} 156 else {ierr = PetscObjectReference((PetscObject) s0);CHKERRQ(ierr);} 157 ierr = PetscSpaceSetUp(s0);CHKERRQ(ierr); 158 for (i = 0; i < Ns; i++) {ierr = PetscSpaceTensorSetSubspace(sp, i, s0);CHKERRQ(ierr);} 159 ierr = PetscSpaceDestroy(&s0);CHKERRQ(ierr); 160 } else { 161 for (i = 0 ; i < Ns; i++) { 162 PetscSpace si; 163 164 ierr = PetscSpaceTensorGetSubspace(sp, i, &si);CHKERRQ(ierr); 165 if (!si) {ierr = PetscSpaceTensorCreateSubspace(sp, 1, &si);CHKERRQ(ierr);} 166 else {ierr = PetscObjectReference((PetscObject) si);CHKERRQ(ierr);} 167 ierr = PetscSpaceSetUp(si);CHKERRQ(ierr); 168 ierr = PetscSpaceTensorSetSubspace(sp, i, si);CHKERRQ(ierr); 169 ierr = PetscSpaceDestroy(&si);CHKERRQ(ierr); 170 } 171 } 172 } 173 deg = PETSC_MAX_INT; 174 maxDeg = 0; 175 for (i = 0; i < Ns; i++) { 176 PetscSpace si; 177 PetscInt iDeg, iMaxDeg; 178 179 ierr = PetscSpaceTensorGetSubspace(sp, i, &si);CHKERRQ(ierr); 180 ierr = PetscSpaceGetDegree(si, &iDeg, &iMaxDeg);CHKERRQ(ierr); 181 deg = PetscMin(deg, iDeg); 182 maxDeg += iMaxDeg; 183 } 184 sp->degree = deg; 185 sp->maxDegree = maxDeg; 186 tens->uniform = uniform; 187 tens->setupCalled = PETSC_TRUE; 188 PetscFunctionReturn(0); 189 } 190 191 static PetscErrorCode PetscSpaceDestroy_Tensor(PetscSpace sp) 192 { 193 PetscSpace_Tensor *tens = (PetscSpace_Tensor *) sp->data; 194 PetscInt Ns, i; 195 PetscErrorCode ierr; 196 197 PetscFunctionBegin; 198 ierr = PetscSpaceTensorGetNumSubspaces(sp, &Ns);CHKERRQ(ierr); 199 for (i = 0; i < Ns; i++) {ierr = PetscSpaceDestroy(&tens->spaces[i]);CHKERRQ(ierr);} 200 ierr = PetscObjectComposeFunction((PetscObject) sp, "PetscSpaceTensorSetSubspace_C", NULL);CHKERRQ(ierr); 201 ierr = PetscObjectComposeFunction((PetscObject) sp, "PetscSpaceTensorGetSubspace_C", NULL);CHKERRQ(ierr); 202 ierr = PetscObjectComposeFunction((PetscObject) sp, "PetscSpaceTensorSetNumSubspaces_C", NULL);CHKERRQ(ierr); 203 ierr = PetscObjectComposeFunction((PetscObject) sp, "PetscSpaceTensorGetNumSubspaces_C", NULL);CHKERRQ(ierr); 204 ierr = PetscFree(tens->spaces);CHKERRQ(ierr); 205 ierr = PetscFree(tens);CHKERRQ(ierr); 206 PetscFunctionReturn(0); 207 } 208 209 static PetscErrorCode PetscSpaceGetDimension_Tensor(PetscSpace sp, PetscInt *dim) 210 { 211 PetscSpace_Tensor *tens = (PetscSpace_Tensor *) sp->data; 212 PetscInt i, Ns, Nc, d; 213 PetscErrorCode ierr; 214 215 PetscFunctionBegin; 216 ierr = PetscSpaceSetUp(sp);CHKERRQ(ierr); 217 Ns = tens->numSpaces; 218 Nc = sp->Nc; 219 d = 1; 220 for (i = 0; i < Ns; i++) { 221 PetscInt id; 222 223 ierr = PetscSpaceGetDimension(tens->spaces[i], &id);CHKERRQ(ierr); 224 d *= id; 225 } 226 d *= Nc; 227 *dim = d; 228 PetscFunctionReturn(0); 229 } 230 231 static PetscErrorCode PetscSpaceEvaluate_Tensor(PetscSpace sp, PetscInt npoints, const PetscReal points[], PetscReal B[], PetscReal D[], PetscReal H[]) 232 { 233 PetscSpace_Tensor *tens = (PetscSpace_Tensor *) sp->data; 234 DM dm = sp->dm; 235 PetscInt Nc = sp->Nc; 236 PetscInt Nv = sp->Nv; 237 PetscInt Ns; 238 PetscReal *lpoints, *sB = NULL, *sD = NULL, *sH = NULL; 239 PetscInt c, pdim, d, e, der, der2, i, l, si, p, s, step; 240 PetscErrorCode ierr; 241 242 PetscFunctionBegin; 243 if (!tens->setupCalled) {ierr = PetscSpaceSetUp(sp);CHKERRQ(ierr);} 244 Ns = tens->numSpaces; 245 ierr = PetscSpaceGetDimension(sp,&pdim);CHKERRQ(ierr); 246 pdim /= Nc; 247 ierr = DMGetWorkArray(dm, npoints*Nv, MPIU_REAL, &lpoints);CHKERRQ(ierr); 248 if (B || D || H) {ierr = DMGetWorkArray(dm, npoints*pdim, MPIU_REAL, &sB);CHKERRQ(ierr);} 249 if (D || H) {ierr = DMGetWorkArray(dm, npoints*pdim*Nv, MPIU_REAL, &sD);CHKERRQ(ierr);} 250 if (H) {ierr = DMGetWorkArray(dm, npoints*pdim*Nv*Nv, MPIU_REAL, &sH);CHKERRQ(ierr);} 251 if (B) { 252 for (i = 0; i < npoints*pdim; i++) B[i * Nc*Nc] = 1.; 253 } 254 if (D) { 255 for (i = 0; i < npoints*pdim; i++) { 256 for (l = 0; l < Nv; l++) { 257 D[i * Nc*Nc*Nv + l] = 1.; 258 } 259 } 260 } 261 if (H) { 262 for (i = 0; i < npoints*pdim; i++) { 263 for (l = 0; l < Nv*Nv; l++) { 264 H[i * Nc*Nc*Nv*Nv + l] = 1.; 265 } 266 } 267 } 268 for (s = 0, d = 0, step = 1; s < Ns; s++) { 269 PetscInt sNv, spdim; 270 PetscInt skip, j, k; 271 272 ierr = PetscSpaceGetNumVariables(tens->spaces[s], &sNv);CHKERRQ(ierr); 273 ierr = PetscSpaceGetDimension(tens->spaces[s], &spdim);CHKERRQ(ierr); 274 if ((pdim % step) || (pdim % spdim)) SETERRQ6(PETSC_COMM_SELF, PETSC_ERR_PLIB, "Bad tensor loop: Nv %d, Ns %D, pdim %D, s %D, step %D, spdim %D", Nv, Ns, pdim, s, step, spdim); 275 skip = pdim / (step * spdim); 276 for (p = 0; p < npoints; ++p) { 277 for (i = 0; i < sNv; i++) { 278 lpoints[p * sNv + i] = points[p*Nv + d + i]; 279 } 280 } 281 ierr = PetscSpaceEvaluate(tens->spaces[s], npoints, lpoints, sB, sD, sH);CHKERRQ(ierr); 282 if (B) { 283 for (p = 0; p < npoints; p++) { 284 for (k = 0; k < skip; k++) { 285 for (si = 0; si < spdim; si++) { 286 for (j = 0; j < step; j++) { 287 i = (k * spdim + si) * step + j; 288 B[(pdim * p + i) * Nc * Nc] *= sB[spdim * p + si]; 289 } 290 } 291 } 292 } 293 } 294 if (D) { 295 for (p = 0; p < npoints; p++) { 296 for (k = 0; k < skip; k++) { 297 for (si = 0; si < spdim; si++) { 298 for (j = 0; j < step; j++) { 299 i = (k * spdim + si) * step + j; 300 for (der = 0; der < Nv; der++) { 301 if (der >= d && der < d + sNv) { 302 D[(pdim * p + i) * Nc*Nc*Nv + der] *= sD[(spdim * p + si) * sNv + der - d]; 303 } else { 304 D[(pdim * p + i) * Nc*Nc*Nv + der] *= sB[spdim * p + si]; 305 } 306 } 307 } 308 } 309 } 310 } 311 } 312 if (H) { 313 for (p = 0; p < npoints; p++) { 314 for (k = 0; k < skip; k++) { 315 for (si = 0; si < spdim; si++) { 316 for (j = 0; j < step; j++) { 317 i = (k * spdim + si) * step + j; 318 for (der = 0; der < Nv; der++) { 319 for (der2 = 0; der2 < Nv; der2++) { 320 if (der >= d && der < d + sNv && der2 >= d && der2 < d + sNv) { 321 H[((pdim * p + i) * Nc*Nc*Nv + der) * Nv + der2] *= sH[((spdim * p + si) * sNv + der - d) * sNv + der2 - d]; 322 } else if (der >= d && der < d + sNv) { 323 H[((pdim * p + i) * Nc*Nc*Nv + der) * Nv + der2] *= sD[(spdim * p + si) * sNv + der - d]; 324 } else if (der2 >= d && der2 < d + sNv) { 325 H[((pdim * p + i) * Nc*Nc*Nv + der) * Nv + der2] *= sD[(spdim * p + si) * sNv + der2 - d]; 326 } else { 327 H[((pdim * p + i) * Nc*Nc*Nv + der) * Nv + der2] *= sB[spdim * p + si]; 328 } 329 } 330 } 331 } 332 } 333 } 334 } 335 } 336 d += sNv; 337 step *= spdim; 338 } 339 if (B && Nc > 1) { 340 /* Make direct sum basis for multicomponent space */ 341 for (p = 0; p < npoints; ++p) { 342 for (i = 0; i < pdim; ++i) { 343 for (c = 1; c < Nc; ++c) { 344 B[(p*pdim*Nc + i*Nc + c)*Nc + c] = B[(p*pdim + i)*Nc*Nc]; 345 } 346 } 347 } 348 } 349 if (D && Nc > 1) { 350 /* Make direct sum basis for multicomponent space */ 351 for (p = 0; p < npoints; ++p) { 352 for (i = 0; i < pdim; ++i) { 353 for (c = 1; c < Nc; ++c) { 354 for (d = 0; d < Nv; ++d) { 355 D[((p*pdim*Nc + i*Nc + c)*Nc + c)*Nv + d] = D[(p*pdim + i)*Nc*Nc*Nv + d]; 356 } 357 } 358 } 359 } 360 } 361 if (H && Nc > 1) { 362 /* Make direct sum basis for multicomponent space */ 363 for (p = 0; p < npoints; ++p) { 364 for (i = 0; i < pdim; ++i) { 365 for (c = 1; c < Nc; ++c) { 366 for (d = 0; d < Nv; ++d) { 367 for (e = 0; e < Nv; ++e) { 368 H[(((p*pdim*Nc + i*Nc + c)*Nc + c)*Nv + d)*Nv + e] = H[((p*pdim + i)*Nc*Nc*Nv + d)*Nv + e]; 369 } 370 } 371 } 372 } 373 } 374 } 375 if (H) {ierr = DMRestoreWorkArray(dm, npoints*pdim*Nv*Nv, MPIU_REAL, &sH);CHKERRQ(ierr);} 376 if (D || H) {ierr = DMRestoreWorkArray(dm, npoints*pdim*Nv, MPIU_REAL, &sD);CHKERRQ(ierr);} 377 if (B || D || H) {ierr = DMRestoreWorkArray(dm, npoints*pdim, MPIU_REAL, &sB);CHKERRQ(ierr);} 378 ierr = DMRestoreWorkArray(dm, npoints*Nv, MPIU_REAL, &lpoints);CHKERRQ(ierr); 379 PetscFunctionReturn(0); 380 } 381 382 PetscErrorCode PetscSpaceTensorSetNumSubspaces(PetscSpace sp, PetscInt numSpaces) 383 { 384 PetscErrorCode ierr; 385 386 PetscFunctionBegin; 387 PetscValidHeaderSpecific(sp, PETSCSPACE_CLASSID, 1); 388 ierr = PetscTryMethod(sp,"PetscSpaceTensorSetNumSubspaces_C",(PetscSpace,PetscInt),(sp,numSpaces));CHKERRQ(ierr); 389 PetscFunctionReturn(0); 390 } 391 392 PetscErrorCode PetscSpaceTensorGetNumSubspaces(PetscSpace sp, PetscInt *numSpaces) 393 { 394 PetscErrorCode ierr; 395 396 PetscFunctionBegin; 397 PetscValidHeaderSpecific(sp, PETSCSPACE_CLASSID, 1); 398 PetscValidIntPointer(numSpaces, 2); 399 ierr = PetscTryMethod(sp,"PetscSpaceTensorGetNumSubspaces_C",(PetscSpace,PetscInt*),(sp,numSpaces));CHKERRQ(ierr); 400 PetscFunctionReturn(0); 401 } 402 403 PetscErrorCode PetscSpaceTensorSetSubspace(PetscSpace sp, PetscInt s, PetscSpace subsp) 404 { 405 PetscErrorCode ierr; 406 407 PetscFunctionBegin; 408 PetscValidHeaderSpecific(sp, PETSCSPACE_CLASSID, 1); 409 if (subsp) PetscValidHeaderSpecific(subsp, PETSCSPACE_CLASSID, 3); 410 ierr = PetscTryMethod(sp,"PetscSpaceTensorSetSubspace_C",(PetscSpace,PetscInt,PetscSpace),(sp,s,subsp));CHKERRQ(ierr); 411 PetscFunctionReturn(0); 412 } 413 414 PetscErrorCode PetscSpaceTensorGetSubspace(PetscSpace sp, PetscInt s, PetscSpace *subsp) 415 { 416 PetscErrorCode ierr; 417 418 PetscFunctionBegin; 419 PetscValidHeaderSpecific(sp, PETSCSPACE_CLASSID, 1); 420 PetscValidPointer(subsp, 3); 421 ierr = PetscTryMethod(sp,"PetscSpaceTensorGetSubspace_C",(PetscSpace,PetscInt,PetscSpace*),(sp,s,subsp));CHKERRQ(ierr); 422 PetscFunctionReturn(0); 423 } 424 425 static PetscErrorCode PetscSpaceTensorSetNumSubspaces_Tensor(PetscSpace space, PetscInt numSpaces) 426 { 427 PetscSpace_Tensor *tens = (PetscSpace_Tensor *) space->data; 428 PetscInt Ns; 429 PetscErrorCode ierr; 430 431 PetscFunctionBegin; 432 if (tens->setupCalled) SETERRQ(PetscObjectComm((PetscObject)space),PETSC_ERR_ARG_WRONGSTATE,"Cannot change number of subspaces after setup called\n"); 433 Ns = tens->numSpaces; 434 if (numSpaces == Ns) PetscFunctionReturn(0); 435 if (Ns >= 0) { 436 PetscInt s; 437 438 for (s = 0; s < Ns; s++) {ierr = PetscSpaceDestroy(&tens->spaces[s]);CHKERRQ(ierr);} 439 ierr = PetscFree(tens->spaces);CHKERRQ(ierr); 440 } 441 Ns = tens->numSpaces = numSpaces; 442 ierr = PetscCalloc1(Ns, &tens->spaces);CHKERRQ(ierr); 443 PetscFunctionReturn(0); 444 } 445 446 static PetscErrorCode PetscSpaceTensorGetNumSubspaces_Tensor(PetscSpace space, PetscInt *numSpaces) 447 { 448 PetscSpace_Tensor *tens = (PetscSpace_Tensor *) space->data; 449 450 PetscFunctionBegin; 451 *numSpaces = tens->numSpaces; 452 PetscFunctionReturn(0); 453 } 454 455 static PetscErrorCode PetscSpaceTensorSetSubspace_Tensor(PetscSpace space, PetscInt s, PetscSpace subspace) 456 { 457 PetscSpace_Tensor *tens = (PetscSpace_Tensor *) space->data; 458 PetscInt Ns; 459 PetscErrorCode ierr; 460 461 PetscFunctionBegin; 462 if (tens->setupCalled) SETERRQ(PetscObjectComm((PetscObject)space),PETSC_ERR_ARG_WRONGSTATE,"Cannot change subspace after setup called\n"); 463 Ns = tens->numSpaces; 464 if (Ns < 0) SETERRQ(PetscObjectComm((PetscObject)space),PETSC_ERR_ARG_WRONGSTATE,"Must call PetscSpaceTensorSetNumSubspaces() first\n"); 465 if (s < 0 || s >= Ns) SETERRQ1(PetscObjectComm((PetscObject)space),PETSC_ERR_ARG_OUTOFRANGE,"Invalid subspace number %D\n",subspace); 466 ierr = PetscObjectReference((PetscObject)subspace);CHKERRQ(ierr); 467 ierr = PetscSpaceDestroy(&tens->spaces[s]);CHKERRQ(ierr); 468 tens->spaces[s] = subspace; 469 PetscFunctionReturn(0); 470 } 471 472 static PetscErrorCode PetscSpaceTensorGetSubspace_Tensor(PetscSpace space, PetscInt s, PetscSpace *subspace) 473 { 474 PetscSpace_Tensor *tens = (PetscSpace_Tensor *) space->data; 475 PetscInt Ns; 476 477 PetscFunctionBegin; 478 Ns = tens->numSpaces; 479 if (Ns < 0) SETERRQ(PetscObjectComm((PetscObject)space),PETSC_ERR_ARG_WRONGSTATE,"Must call PetscSpaceTensorSetNumSubspaces() first\n"); 480 if (s < 0 || s >= Ns) SETERRQ1(PetscObjectComm((PetscObject)space),PETSC_ERR_ARG_OUTOFRANGE,"Invalid subspace number %D\n",subspace); 481 *subspace = tens->spaces[s]; 482 PetscFunctionReturn(0); 483 } 484 485 static PetscErrorCode PetscSpaceInitialize_Tensor(PetscSpace sp) 486 { 487 PetscErrorCode ierr; 488 489 PetscFunctionBegin; 490 sp->ops->setfromoptions = PetscSpaceSetFromOptions_Tensor; 491 sp->ops->setup = PetscSpaceSetUp_Tensor; 492 sp->ops->view = PetscSpaceView_Tensor; 493 sp->ops->destroy = PetscSpaceDestroy_Tensor; 494 sp->ops->getdimension = PetscSpaceGetDimension_Tensor; 495 sp->ops->evaluate = PetscSpaceEvaluate_Tensor; 496 sp->ops->getheightsubspace = NULL; 497 ierr = PetscObjectComposeFunction((PetscObject) sp, "PetscSpaceTensorGetNumSubspaces_C", PetscSpaceTensorGetNumSubspaces_Tensor);CHKERRQ(ierr); 498 ierr = PetscObjectComposeFunction((PetscObject) sp, "PetscSpaceTensorSetNumSubspaces_C", PetscSpaceTensorSetNumSubspaces_Tensor);CHKERRQ(ierr); 499 ierr = PetscObjectComposeFunction((PetscObject) sp, "PetscSpaceTensorGetSubspace_C", PetscSpaceTensorGetSubspace_Tensor);CHKERRQ(ierr); 500 ierr = PetscObjectComposeFunction((PetscObject) sp, "PetscSpaceTensorSetSubspace_C", PetscSpaceTensorSetSubspace_Tensor);CHKERRQ(ierr); 501 PetscFunctionReturn(0); 502 } 503 504 /*MC 505 PETSCSPACETENSOR = "tensor" - A PetscSpace object that encapsulates a tensor product space. 506 Subspaces are scalar spaces (num of componenents = 1), vector components 507 are assumed to be identical. 508 509 Level: intermediate 510 511 .seealso: PetscSpaceType, PetscSpaceCreate(), PetscSpaceSetType() 512 M*/ 513 514 PETSC_EXTERN PetscErrorCode PetscSpaceCreate_Tensor(PetscSpace sp) 515 { 516 PetscSpace_Tensor *tens; 517 PetscErrorCode ierr; 518 519 PetscFunctionBegin; 520 PetscValidHeaderSpecific(sp, PETSCSPACE_CLASSID, 1); 521 ierr = PetscNewLog(sp,&tens);CHKERRQ(ierr); 522 sp->data = tens; 523 524 tens->numSpaces = PETSC_DEFAULT; 525 526 ierr = PetscSpaceInitialize_Tensor(sp);CHKERRQ(ierr); 527 PetscFunctionReturn(0); 528 } 529 530