| 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 | This provides a simple shell interface for programmers to create | ||
| 12 | their own spectral transformations without writing much interface code | ||
| 13 | */ | ||
| 14 | |||
| 15 | #include <slepc/private/stimpl.h> /*I "slepcst.h" I*/ | ||
| 16 | |||
| 17 | typedef struct { | ||
| 18 | void *ctx; /* user provided context */ | ||
| 19 | PetscErrorCode (*apply)(ST,Vec,Vec); | ||
| 20 | PetscErrorCode (*applytrans)(ST,Vec,Vec); | ||
| 21 | PetscErrorCode (*applyhermtrans)(ST,Vec,Vec); | ||
| 22 | PetscErrorCode (*backtransform)(ST,PetscInt n,PetscScalar*,PetscScalar*); | ||
| 23 | } ST_SHELL; | ||
| 24 | |||
| 25 | /*@C | ||
| 26 | STShellGetContext - Returns the user-provided context associated with a shell ST | ||
| 27 | |||
| 28 | Not Collective | ||
| 29 | |||
| 30 | Input Parameter: | ||
| 31 | . st - spectral transformation context | ||
| 32 | |||
| 33 | Output Parameter: | ||
| 34 | . ctx - the user provided context | ||
| 35 | |||
| 36 | Level: advanced | ||
| 37 | |||
| 38 | Notes: | ||
| 39 | This routine is intended for use within various shell routines | ||
| 40 | |||
| 41 | .seealso: STShellSetContext() | ||
| 42 | @*/ | ||
| 43 | 356111 | PetscErrorCode STShellGetContext(ST st,void *ctx) | |
| 44 | { | ||
| 45 | 356111 | PetscBool flg; | |
| 46 | |||
| 47 |
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356111 | PetscFunctionBegin; |
| 48 |
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356111 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 49 |
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356111 | PetscAssertPointer(ctx,2); |
| 50 |
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356111 | PetscCall(PetscObjectTypeCompare((PetscObject)st,STSHELL,&flg)); |
| 51 |
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356111 | if (!flg) *(void**)ctx = NULL; |
| 52 | 356111 | else *(void**)ctx = ((ST_SHELL*)st->data)->ctx; | |
| 53 |
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70538 | PetscFunctionReturn(PETSC_SUCCESS); |
| 54 | } | ||
| 55 | |||
| 56 | /*@ | ||
| 57 | STShellSetContext - Sets the context for a shell ST | ||
| 58 | |||
| 59 | Logically Collective | ||
| 60 | |||
| 61 | Input Parameters: | ||
| 62 | + st - the shell ST | ||
| 63 | - ctx - the context | ||
| 64 | |||
| 65 | Level: advanced | ||
| 66 | |||
| 67 | Fortran Notes: | ||
| 68 | To use this from Fortran you must write a Fortran interface definition | ||
| 69 | for this function that tells Fortran the Fortran derived data type that | ||
| 70 | you are passing in as the ctx argument. | ||
| 71 | |||
| 72 | .seealso: STShellGetContext() | ||
| 73 | @*/ | ||
| 74 | 319 | PetscErrorCode STShellSetContext(ST st,void *ctx) | |
| 75 | { | ||
| 76 | 319 | ST_SHELL *shell = (ST_SHELL*)st->data; | |
| 77 | 319 | PetscBool flg; | |
| 78 | |||
| 79 |
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319 | PetscFunctionBegin; |
| 80 |
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319 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 81 |
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319 | PetscCall(PetscObjectTypeCompare((PetscObject)st,STSHELL,&flg)); |
| 82 |
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319 | if (flg) shell->ctx = ctx; |
| 83 |
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63 | PetscFunctionReturn(PETSC_SUCCESS); |
| 84 | } | ||
| 85 | |||
| 86 | 30316 | static PetscErrorCode STApply_Shell(ST st,Vec x,Vec y) | |
| 87 | { | ||
| 88 | 30316 | ST_SHELL *shell = (ST_SHELL*)st->data; | |
| 89 | 30316 | PetscObjectState instate,outstate; | |
| 90 | |||
| 91 |
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30316 | PetscFunctionBegin; |
| 92 |
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30316 | PetscCheck(shell->apply,PetscObjectComm((PetscObject)st),PETSC_ERR_USER,"No apply() routine provided to Shell ST"); |
| 93 |
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30316 | PetscCall(VecGetState(y,&instate)); |
| 94 |
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30316 | PetscCallBack("STSHELL user function apply()",(*shell->apply)(st,x,y)); |
| 95 |
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30316 | PetscCall(VecGetState(y,&outstate)); |
| 96 |
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30316 | if (instate == outstate) { |
| 97 | /* user forgot to increase the state of the output vector */ | ||
| 98 | ✗ | PetscCall(PetscObjectStateIncrease((PetscObject)y)); | |
| 99 | } | ||
| 100 |
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5970 | PetscFunctionReturn(PETSC_SUCCESS); |
| 101 | } | ||
| 102 | |||
| 103 | 775 | static PetscErrorCode STApplyTranspose_Shell(ST st,Vec x,Vec y) | |
| 104 | { | ||
| 105 | 775 | ST_SHELL *shell = (ST_SHELL*)st->data; | |
| 106 | 775 | PetscObjectState instate,outstate; | |
| 107 | |||
| 108 |
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775 | PetscFunctionBegin; |
| 109 |
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775 | PetscCheck(shell->applytrans,PetscObjectComm((PetscObject)st),PETSC_ERR_USER,"No applytrans() routine provided to Shell ST"); |
| 110 |
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775 | PetscCall(VecGetState(y,&instate)); |
| 111 |
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775 | PetscCallBack("STSHELL user function applytrans()",(*shell->applytrans)(st,x,y)); |
| 112 |
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775 | PetscCall(VecGetState(y,&outstate)); |
| 113 |
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775 | if (instate == outstate) { |
| 114 | /* user forgot to increase the state of the output vector */ | ||
| 115 | ✗ | PetscCall(PetscObjectStateIncrease((PetscObject)y)); | |
| 116 | } | ||
| 117 |
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147 | PetscFunctionReturn(PETSC_SUCCESS); |
| 118 | } | ||
| 119 | |||
| 120 | #if defined(PETSC_USE_COMPLEX) | ||
| 121 | 460 | static PetscErrorCode STApplyHermitianTranspose_Shell(ST st,Vec x,Vec y) | |
| 122 | { | ||
| 123 | 460 | ST_SHELL *shell = (ST_SHELL*)st->data; | |
| 124 | 460 | PetscObjectState instate,outstate; | |
| 125 | 460 | Vec w; | |
| 126 | |||
| 127 |
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460 | PetscFunctionBegin; |
| 128 |
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460 | if (shell->applyhermtrans) { |
| 129 |
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105 | PetscCall(VecGetState(y,&instate)); |
| 130 |
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105 | PetscCallBack("STSHELL user function applyhermtrans()",(*shell->applyhermtrans)(st,x,y)); |
| 131 |
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105 | PetscCall(VecGetState(y,&outstate)); |
| 132 |
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105 | if (instate == outstate) { |
| 133 | /* user forgot to increase the state of the output vector */ | ||
| 134 | ✗ | PetscCall(PetscObjectStateIncrease((PetscObject)y)); | |
| 135 | } | ||
| 136 | } else { | ||
| 137 |
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355 | PetscCall(VecDuplicate(x,&w)); |
| 138 |
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355 | PetscCall(VecCopy(x,w)); |
| 139 |
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355 | PetscCall(VecConjugate(w)); |
| 140 |
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355 | PetscCall(STApplyTranspose_Shell(st,w,y)); |
| 141 |
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355 | PetscCall(VecDestroy(&w)); |
| 142 |
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355 | PetscCall(VecConjugate(y)); |
| 143 | } | ||
| 144 |
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76 | PetscFunctionReturn(PETSC_SUCCESS); |
| 145 | } | ||
| 146 | #endif | ||
| 147 | |||
| 148 | 345281 | static PetscErrorCode STBackTransform_Shell(ST st,PetscInt n,PetscScalar *eigr,PetscScalar *eigi) | |
| 149 | { | ||
| 150 | 345281 | ST_SHELL *shell = (ST_SHELL*)st->data; | |
| 151 | |||
| 152 |
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345281 | PetscFunctionBegin; |
| 153 |
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345281 | if (shell->backtransform) PetscCallBack("STSHELL user function backtransform()",(*shell->backtransform)(st,n,eigr,eigi)); |
| 154 |
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67746 | PetscFunctionReturn(PETSC_SUCCESS); |
| 155 | } | ||
| 156 | |||
| 157 | /* | ||
| 158 | STIsInjective_Shell - Check if the user has provided the backtransform operation. | ||
| 159 | */ | ||
| 160 | 331 | PetscErrorCode STIsInjective_Shell(ST st,PetscBool* is) | |
| 161 | { | ||
| 162 | 331 | ST_SHELL *shell = (ST_SHELL*)st->data; | |
| 163 | |||
| 164 |
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331 | PetscFunctionBegin; |
| 165 | 331 | *is = shell->backtransform? PETSC_TRUE: PETSC_FALSE; | |
| 166 |
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331 | PetscFunctionReturn(PETSC_SUCCESS); |
| 167 | } | ||
| 168 | |||
| 169 | 371 | static PetscErrorCode STDestroy_Shell(ST st) | |
| 170 | { | ||
| 171 |
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371 | PetscFunctionBegin; |
| 172 |
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371 | PetscCall(PetscFree(st->data)); |
| 173 |
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371 | PetscCall(PetscObjectComposeFunction((PetscObject)st,"STShellSetApply_C",NULL)); |
| 174 |
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371 | PetscCall(PetscObjectComposeFunction((PetscObject)st,"STShellSetApplyTranspose_C",NULL)); |
| 175 |
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371 | PetscCall(PetscObjectComposeFunction((PetscObject)st,"STShellSetApplyHermitianTranspose_C",NULL)); |
| 176 |
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371 | PetscCall(PetscObjectComposeFunction((PetscObject)st,"STShellSetBackTransform_C",NULL)); |
| 177 |
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71 | PetscFunctionReturn(PETSC_SUCCESS); |
| 178 | } | ||
| 179 | |||
| 180 | 331 | static PetscErrorCode STShellSetApply_Shell(ST st,STShellApplyFn *apply) | |
| 181 | { | ||
| 182 | 331 | ST_SHELL *shell = (ST_SHELL*)st->data; | |
| 183 | |||
| 184 |
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331 | PetscFunctionBegin; |
| 185 | 331 | shell->apply = apply; | |
| 186 |
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331 | PetscFunctionReturn(PETSC_SUCCESS); |
| 187 | } | ||
| 188 | |||
| 189 | /*@C | ||
| 190 | STShellSetApply - Sets routine to use as the application of the | ||
| 191 | operator to a vector in the user-defined spectral transformation. | ||
| 192 | |||
| 193 | Logically Collective | ||
| 194 | |||
| 195 | Input Parameters: | ||
| 196 | + st - the spectral transformation context | ||
| 197 | - apply - the application-provided transformation routine | ||
| 198 | |||
| 199 | Level: advanced | ||
| 200 | |||
| 201 | .seealso: STShellSetBackTransform(), STShellSetApplyTranspose(), STShellSetApplyHermitianTranspose() | ||
| 202 | @*/ | ||
| 203 | 331 | PetscErrorCode STShellSetApply(ST st,STShellApplyFn *apply) | |
| 204 | { | ||
| 205 |
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331 | PetscFunctionBegin; |
| 206 |
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331 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 207 |
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331 | PetscTryMethod(st,"STShellSetApply_C",(ST,STShellApplyFn*),(st,apply)); |
| 208 |
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331 | PetscFunctionReturn(PETSC_SUCCESS); |
| 209 | } | ||
| 210 | |||
| 211 | 72 | static PetscErrorCode STShellSetApplyTranspose_Shell(ST st,STShellApplyTransposeFn *applytrans) | |
| 212 | { | ||
| 213 | 72 | ST_SHELL *shell = (ST_SHELL*)st->data; | |
| 214 | |||
| 215 |
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72 | PetscFunctionBegin; |
| 216 | 72 | shell->applytrans = applytrans; | |
| 217 |
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72 | PetscFunctionReturn(PETSC_SUCCESS); |
| 218 | } | ||
| 219 | |||
| 220 | /*@C | ||
| 221 | STShellSetApplyTranspose - Sets routine to use as the application of the | ||
| 222 | transposed operator to a vector in the user-defined spectral transformation. | ||
| 223 | |||
| 224 | Logically Collective | ||
| 225 | |||
| 226 | Input Parameters: | ||
| 227 | + st - the spectral transformation context | ||
| 228 | - applytrans - the application-provided transformation routine | ||
| 229 | |||
| 230 | Level: advanced | ||
| 231 | |||
| 232 | .seealso: STShellSetApply(), STShellSetBackTransform() | ||
| 233 | @*/ | ||
| 234 | 72 | PetscErrorCode STShellSetApplyTranspose(ST st,STShellApplyTransposeFn *applytrans) | |
| 235 | { | ||
| 236 |
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72 | PetscFunctionBegin; |
| 237 |
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72 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 238 |
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72 | PetscTryMethod(st,"STShellSetApplyTranspose_C",(ST,STShellApplyTransposeFn*),(st,applytrans)); |
| 239 |
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72 | PetscFunctionReturn(PETSC_SUCCESS); |
| 240 | } | ||
| 241 | |||
| 242 | #if defined(PETSC_USE_COMPLEX) | ||
| 243 | 13 | static PetscErrorCode STShellSetApplyHermitianTranspose_Shell(ST st,STShellApplyHermitianTransposeFn *applyhermtrans) | |
| 244 | { | ||
| 245 | 13 | ST_SHELL *shell = (ST_SHELL*)st->data; | |
| 246 | |||
| 247 |
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13 | PetscFunctionBegin; |
| 248 | 13 | shell->applyhermtrans = applyhermtrans; | |
| 249 |
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13 | PetscFunctionReturn(PETSC_SUCCESS); |
| 250 | } | ||
| 251 | #endif | ||
| 252 | |||
| 253 | /*@C | ||
| 254 | STShellSetApplyHermitianTranspose - Sets routine to use as the application of the | ||
| 255 | conjugate-transposed operator to a vector in the user-defined spectral transformation. | ||
| 256 | |||
| 257 | Logically Collective | ||
| 258 | |||
| 259 | Input Parameters: | ||
| 260 | + st - the spectral transformation context | ||
| 261 | - applyhermtrans - the application-provided transformation routine | ||
| 262 | |||
| 263 | Note: | ||
| 264 | If configured with real scalars, this function has the same effect as STShellSetApplyTranspose(), | ||
| 265 | so no need to call both. | ||
| 266 | |||
| 267 | Level: advanced | ||
| 268 | |||
| 269 | .seealso: STShellSetApply(), STShellSetApplyTranspose(), STShellSetBackTransform() | ||
| 270 | @*/ | ||
| 271 | 13 | PetscErrorCode STShellSetApplyHermitianTranspose(ST st,STShellApplyHermitianTransposeFn *applyhermtrans) | |
| 272 | { | ||
| 273 |
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13 | PetscFunctionBegin; |
| 274 |
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13 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 275 |
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13 | PetscTryMethod(st,"STShellSetApplyHermitianTranspose_C",(ST,STShellApplyHermitianTransposeFn*),(st,applyhermtrans)); |
| 276 |
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13 | PetscFunctionReturn(PETSC_SUCCESS); |
| 277 | } | ||
| 278 | |||
| 279 | 321 | static PetscErrorCode STShellSetBackTransform_Shell(ST st,STShellBackTransformFn *backtr) | |
| 280 | { | ||
| 281 | 321 | ST_SHELL *shell = (ST_SHELL*)st->data; | |
| 282 | |||
| 283 |
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321 | PetscFunctionBegin; |
| 284 | 321 | shell->backtransform = backtr; | |
| 285 |
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321 | PetscFunctionReturn(PETSC_SUCCESS); |
| 286 | } | ||
| 287 | |||
| 288 | /*@C | ||
| 289 | STShellSetBackTransform - Sets the routine to be called after the | ||
| 290 | eigensolution process has finished in order to transform back the | ||
| 291 | computed eigenvalues. | ||
| 292 | |||
| 293 | Logically Collective | ||
| 294 | |||
| 295 | Input Parameters: | ||
| 296 | + st - the spectral transformation context | ||
| 297 | - backtr - the application-provided backtransform routine | ||
| 298 | |||
| 299 | Level: advanced | ||
| 300 | |||
| 301 | .seealso: STShellSetApply(), STShellSetApplyTranspose() | ||
| 302 | @*/ | ||
| 303 | 321 | PetscErrorCode STShellSetBackTransform(ST st,STShellBackTransformFn *backtr) | |
| 304 | { | ||
| 305 |
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321 | PetscFunctionBegin; |
| 306 |
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321 | PetscValidHeaderSpecific(st,ST_CLASSID,1); |
| 307 |
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321 | PetscTryMethod(st,"STShellSetBackTransform_C",(ST,STShellBackTransformFn*),(st,backtr)); |
| 308 |
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321 | PetscFunctionReturn(PETSC_SUCCESS); |
| 309 | } | ||
| 310 | |||
| 311 | /*MC | ||
| 312 | STSHELL - User-defined spectral transformation via callback functions | ||
| 313 | for the application of the operator to a vector and (optionally) the | ||
| 314 | backtransform operation. | ||
| 315 | |||
| 316 | Level: advanced | ||
| 317 | |||
| 318 | Usage: | ||
| 319 | $ extern PetscErrorCode (*apply)(void*,Vec,Vec); | ||
| 320 | $ extern PetscErrorCode (*applytrans)(void*,Vec,Vec); | ||
| 321 | $ extern PetscErrorCode (*applyht)(void*,Vec,Vec); | ||
| 322 | $ extern PetscErrorCode (*backtr)(void*,PetscScalar*,PetscScalar*); | ||
| 323 | $ | ||
| 324 | $ STCreate(comm,&st); | ||
| 325 | $ STSetType(st,STSHELL); | ||
| 326 | $ STShellSetContext(st,ctx); | ||
| 327 | $ STShellSetApply(st,apply); | ||
| 328 | $ STShellSetApplyTranspose(st,applytrans); (optional) | ||
| 329 | $ STShellSetApplyHermitianTranspose(st,applyht); (optional, only in complex scalars) | ||
| 330 | $ STShellSetBackTransform(st,backtr); (optional) | ||
| 331 | |||
| 332 | M*/ | ||
| 333 | |||
| 334 | 371 | SLEPC_EXTERN PetscErrorCode STCreate_Shell(ST st) | |
| 335 | { | ||
| 336 | 371 | ST_SHELL *ctx; | |
| 337 | |||
| 338 |
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371 | PetscFunctionBegin; |
| 339 |
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371 | PetscCall(PetscNew(&ctx)); |
| 340 | 371 | st->data = (void*)ctx; | |
| 341 | |||
| 342 | 371 | st->usesksp = PETSC_FALSE; | |
| 343 | |||
| 344 | 371 | st->ops->apply = STApply_Shell; | |
| 345 | 371 | st->ops->applytrans = STApplyTranspose_Shell; | |
| 346 | #if defined(PETSC_USE_COMPLEX) | ||
| 347 | 190 | st->ops->applyhermtrans = STApplyHermitianTranspose_Shell; | |
| 348 | #else | ||
| 349 | 181 | st->ops->applyhermtrans = STApplyTranspose_Shell; | |
| 350 | #endif | ||
| 351 | 371 | st->ops->backtransform = STBackTransform_Shell; | |
| 352 | 371 | st->ops->destroy = STDestroy_Shell; | |
| 353 | |||
| 354 |
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371 | PetscCall(PetscObjectComposeFunction((PetscObject)st,"STShellSetApply_C",STShellSetApply_Shell)); |
| 355 |
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371 | PetscCall(PetscObjectComposeFunction((PetscObject)st,"STShellSetApplyTranspose_C",STShellSetApplyTranspose_Shell)); |
| 356 | #if defined(PETSC_USE_COMPLEX) | ||
| 357 |
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190 | PetscCall(PetscObjectComposeFunction((PetscObject)st,"STShellSetApplyHermitianTranspose_C",STShellSetApplyHermitianTranspose_Shell)); |
| 358 | #else | ||
| 359 |
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181 | PetscCall(PetscObjectComposeFunction((PetscObject)st,"STShellSetApplyHermitianTranspose_C",STShellSetApplyTranspose_Shell)); |
| 360 | #endif | ||
| 361 |
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371 | PetscCall(PetscObjectComposeFunction((PetscObject)st,"STShellSetBackTransform_C",STShellSetBackTransform_Shell)); |
| 362 |
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71 | PetscFunctionReturn(PETSC_SUCCESS); |
| 363 | } | ||
| 364 |