1 /// Copyright (c) 2017, Lawrence Livermore National Security, LLC. Produced at 2 /// the Lawrence Livermore National Laboratory. LLNL-CODE-734707. All Rights 3 /// reserved. See files LICENSE and NOTICE for details. 4 /// 5 /// This file is part of CEED, a collection of benchmarks, miniapps, software 6 /// libraries and APIs for efficient high-order finite element and spectral 7 /// element discretizations for exascale applications. For more information and 8 /// source code availability see http://github.com/ceed. 9 /// 10 /// The CEED research is supported by the Exascale Computing Project 17-SC-20-SC, 11 /// a collaborative effort of two U.S. Department of Energy organizations (Office 12 /// of Science and the National Nuclear Security Administration) responsible for 13 /// the planning and preparation of a capable exascale ecosystem, including 14 /// software, applications, hardware, advanced system engineering and early 15 /// testbed platforms, in support of the nation's exascale computing imperative. 16 17 /// @file 18 /// Public header for user and utility components of libCEED 19 #ifndef _ceed_h 20 #define _ceed_h 21 22 /// @defgroup Ceed Ceed: core components 23 /// @defgroup CeedVector CeedVector: storing and manipulating vectors 24 /// @defgroup CeedElemRestriction CeedElemRestriction: restriction from local vectors to elements 25 /// @defgroup CeedBasis CeedBasis: fully discrete finite element-like objects 26 /// @defgroup CeedQFunction CeedQFunction: independent operations at quadrature points 27 /// @defgroup CeedOperator CeedOperator: composed FE-type operations on vectors 28 /// 29 /// @page FunctionCategories libCEED: Types of Functions 30 /// libCEED provides three different header files depending upon the type of 31 /// functions a user requires. 32 /// @section Utility Utility Functions 33 /// These functions are intended general utilities that may be useful to 34 /// libCEED developers and users. These functions can generally be found in 35 /// "ceed.h". 36 /// @section User User Functions 37 /// These functions are intended to be used by general users of libCEED 38 /// and can generally be found in "ceed.h". 39 /// @section Backend Backend Developer Functions 40 /// These functions are intended to be used by backend developers of 41 /// libCEED and can generally be found in "ceed-backend.h". 42 /// @section Developer Library Developer Functions 43 /// These functions are intended to be used by library developers of 44 /// libCEED and can generally be found in "ceed-impl.h". 45 46 /** 47 CEED_EXTERN is used in this header to denote all publicly visible symbols. 48 49 No other file should declare publicly visible symbols, thus it should never be 50 used outside ceed.h. 51 */ 52 #ifdef __cplusplus 53 # define CEED_EXTERN extern "C" 54 #else 55 # define CEED_EXTERN extern 56 #endif 57 58 /** 59 @ingroup CeedQFunction 60 This macro populates the correct function annotations for User QFunction 61 source for code generation backends or populates default values for CPU 62 backends. 63 **/ 64 #ifndef CEED_QFUNCTION 65 #define CEED_QFUNCTION(name) \ 66 static const char name ## _loc[] = __FILE__ ":" #name; \ 67 static int name 68 #endif 69 70 /** 71 @ingroup CeedQFunction 72 Using VLA syntax to reshape User QFunction inputs and outputs can make 73 user code more readable. VLA is a C99 feature that is not supported by 74 the C++ dialect used by CUDA. This macro allows users to use the VLA 75 syntax with the CUDA backends. 76 **/ 77 #ifndef CEED_Q_VLA 78 # define CEED_Q_VLA Q 79 #endif 80 81 /** 82 @ingroup Ceed 83 This macro provides the appropriate SIMD Pragma for the compilation 84 environment. Code generation backends may redefine this macro, as needed. 85 **/ 86 #ifndef CeedPragmaSIMD 87 # if defined(__INTEL_COMPILER) &&__INTEL_COMPILER >= 900 88 # define CeedPragmaSIMD _Pragma("simd") 89 # elif defined(__GNUC__) && __GNUC__ >= 5 90 # define CeedPragmaSIMD _Pragma("GCC ivdep") 91 # elif defined(_OPENMP) && _OPENMP >= 201307 // OpenMP-4.0 (July, 2013) 92 # define CeedPragmaSIMD _Pragma("omp simd") 93 # else 94 # define CeedPragmaSIMD 95 # endif 96 #endif 97 98 #include <assert.h> 99 #include <stdint.h> 100 #include <stddef.h> 101 #include <stdarg.h> 102 #include <stdio.h> 103 #include <stdbool.h> 104 105 /// Integer type, used for indexing 106 /// @ingroup Ceed 107 typedef int32_t CeedInt; 108 /// Scalar (floating point) type 109 /// @ingroup Ceed 110 typedef double CeedScalar; 111 112 /// Library context created by CeedInit() 113 /// @ingroup CeedUser 114 typedef struct Ceed_private *Ceed; 115 /// Non-blocking Ceed interfaces return a CeedRequest. 116 /// To perform an operation immediately, pass \ref CEED_REQUEST_IMMEDIATE instead. 117 /// @ingroup CeedUser 118 typedef struct CeedRequest_private *CeedRequest; 119 /// Handle for vectors over the field \ref CeedScalar 120 /// @ingroup CeedVectorUser 121 typedef struct CeedVector_private *CeedVector; 122 /// Handle for object describing restriction to elements 123 /// @ingroup CeedElemRestrictionUser 124 typedef struct CeedElemRestriction_private *CeedElemRestriction; 125 /// Handle for object describing discrete finite element evaluations 126 /// @ingroup CeedBasisUser 127 typedef struct CeedBasis_private *CeedBasis; 128 /// Handle for object describing functions evaluated independently at quadrature points 129 /// @ingroup CeedQFunctionUser 130 typedef struct CeedQFunction_private *CeedQFunction; 131 /// Handle for object describing FE-type operators acting on vectors 132 /// 133 /// Given an element restriction \f$E\f$, basis evaluator \f$B\f$, and 134 /// quadrature function\f$f\f$, a CeedOperator expresses operations of the form 135 /// $$ E^T B^T f(B E u) $$ 136 /// acting on the vector \f$u\f$. 137 /// @ingroup CeedOperatorUser 138 typedef struct CeedOperator_private *CeedOperator; 139 140 CEED_EXTERN int CeedInit(const char *resource, Ceed *ceed); 141 CEED_EXTERN int CeedGetResource(Ceed ceed, const char **resource); 142 CEED_EXTERN int CeedDestroy(Ceed *ceed); 143 144 CEED_EXTERN int CeedErrorImpl(Ceed, const char *, int, const char *, int, 145 const char *, ...); 146 /// Raise an error on ceed object 147 /// 148 /// @param ceed Ceed library context or NULL 149 /// @param ecode Error code (int) 150 /// @param ... printf-style format string followed by arguments as needed 151 /// 152 /// @ingroup Ceed 153 /// @sa CeedSetErrorHandler() 154 #if defined(__clang__) 155 /// Use nonstandard ternary to convince the compiler/clang-tidy that this 156 /// function never returns zero. 157 # define CeedError(ceed, ecode, ...) \ 158 (CeedErrorImpl((ceed), __FILE__, __LINE__, __func__, (ecode), __VA_ARGS__) ?: (ecode)) 159 #else 160 # define CeedError(ceed, ecode, ...) \ 161 CeedErrorImpl((ceed), __FILE__, __LINE__, __func__, (ecode), __VA_ARGS__) ?: (ecode) 162 #endif 163 /// Specify memory type 164 /// 165 /// Many Ceed interfaces take or return pointers to memory. This enum is used to 166 /// specify where the memory being provided or requested must reside. 167 /// @ingroup Ceed 168 typedef enum { 169 /// Memory resides on the host 170 CEED_MEM_HOST, 171 /// Memory resides on a device (corresponding to \ref Ceed resource) 172 CEED_MEM_DEVICE, 173 } CeedMemType; 174 175 CEED_EXTERN const char *const CeedMemTypes[]; 176 177 CEED_EXTERN int CeedGetPreferredMemType(Ceed ceed, CeedMemType *type); 178 179 /// Conveys ownership status of arrays passed to Ceed interfaces. 180 /// @ingroup Ceed 181 typedef enum { 182 /// Implementation will copy the values and not store the passed pointer. 183 CEED_COPY_VALUES, 184 /// Implementation can use and modify the data provided by the user, but does 185 /// not take ownership. 186 CEED_USE_POINTER, 187 /// Implementation takes ownership of the pointer and will free using 188 /// CeedFree() when done using it. The user should not assume that the 189 /// pointer remains valid after ownership has been transferred. Note that 190 /// arrays allocated using C++ operator new or other allocators cannot 191 /// generally be freed using CeedFree(). CeedFree() is capable of freeing any 192 /// memory that can be freed using free(3). 193 CEED_OWN_POINTER, 194 } CeedCopyMode; 195 196 /// Denotes type of vector norm to be computed 197 /// @ingroup CeedVector 198 typedef enum { 199 /// L_1 norm: sum_i |x_i| 200 CEED_NORM_1, 201 /// L_2 norm: sqrt(sum_i |x_i|^2) 202 CEED_NORM_2, 203 /// L_Infinity norm: max_i |x_i| 204 CEED_NORM_MAX, 205 } CeedNormType; 206 207 CEED_EXTERN const char *const CeedCopyModes[]; 208 209 CEED_EXTERN int CeedVectorCreate(Ceed ceed, CeedInt len, CeedVector *vec); 210 CEED_EXTERN int CeedVectorSetArray(CeedVector vec, CeedMemType mtype, 211 CeedCopyMode cmode, CeedScalar *array); 212 CEED_EXTERN int CeedVectorSetValue(CeedVector vec, CeedScalar value); 213 CEED_EXTERN int CeedVectorSyncArray(CeedVector vec, CeedMemType mtype); 214 CEED_EXTERN int CeedVectorGetArray(CeedVector vec, CeedMemType mtype, 215 CeedScalar **array); 216 CEED_EXTERN int CeedVectorGetArrayRead(CeedVector vec, CeedMemType mtype, 217 const CeedScalar **array); 218 CEED_EXTERN int CeedVectorRestoreArray(CeedVector vec, CeedScalar **array); 219 CEED_EXTERN int CeedVectorRestoreArrayRead(CeedVector vec, 220 const CeedScalar **array); 221 CEED_EXTERN int CeedVectorNorm(CeedVector vec, CeedNormType type, 222 CeedScalar *norm); 223 CEED_EXTERN int CeedVectorView(CeedVector vec, const char *fpfmt, FILE *stream); 224 CEED_EXTERN int CeedVectorGetLength(CeedVector vec, CeedInt *length); 225 CEED_EXTERN int CeedVectorDestroy(CeedVector *vec); 226 227 CEED_EXTERN CeedRequest *const CEED_REQUEST_IMMEDIATE; 228 CEED_EXTERN CeedRequest *const CEED_REQUEST_ORDERED; 229 CEED_EXTERN int CeedRequestWait(CeedRequest *req); 230 231 /// Argument for CeedOperatorSetField that vector is collocated with 232 /// quadrature points, used with QFunction eval mode CEED_EVAL_NONE 233 /// or CEED_EVAL_INTERP only, not with CEED_EVAL_GRAD, CEED_EVAL_DIV, 234 /// or CEED_EVAL_CURL 235 /// @ingroup CeedBasis 236 CEED_EXTERN const CeedBasis CEED_BASIS_COLLOCATED; 237 238 /// Argument for CeedOperatorSetField to use active input or output 239 /// @ingroup CeedVector 240 CEED_EXTERN const CeedVector CEED_VECTOR_ACTIVE; 241 242 /// Argument for CeedOperatorSetField to use no vector, used with 243 /// qfunction input with eval mode CEED_EVAL_WEIGHT 244 /// @ingroup CeedVector 245 CEED_EXTERN const CeedVector CEED_VECTOR_NONE; 246 247 /// Argument for CeedOperatorSetField to use no ElemRestriction, only used with 248 /// eval mode CEED_EVAL_WEIGHT. 249 /// @ingroup CeedElemRestriction 250 CEED_EXTERN const CeedElemRestriction CEED_ELEMRESTRICTION_NONE; 251 252 /// Argument for CeedOperatorCreate that QFunction is not created by user. 253 /// Only used for QFunctions dqf and dqfT. If implemented, a backend may 254 /// attempt to provide the action of these QFunctions. 255 /// @ingroup CeedQFunction 256 CEED_EXTERN const CeedQFunction CEED_QFUNCTION_NONE; 257 258 /// Denotes whether a linear transformation or its transpose should be applied 259 /// @ingroup CeedBasis 260 typedef enum { 261 /// Apply the linear transformation 262 CEED_NOTRANSPOSE, 263 /// Apply the transpose 264 CEED_TRANSPOSE 265 } CeedTransposeMode; 266 267 CEED_EXTERN const char *const CeedTransposeModes[]; 268 269 /// Denotes whether a L-vector is ordered [component, node] or [node, component] 270 /// with the right-most index being contiguous in memory 271 /// @ingroup CeedElemRestriction 272 typedef enum { 273 /// L-vector data is not interlaced, ordered [component, node] 274 CEED_NONINTERLACED, 275 /// L-vector data is interlaced, ordered [node, component] 276 CEED_INTERLACED 277 } CeedInterlaceMode; 278 279 CEED_EXTERN const char *const CeedInterlaceModes[]; 280 281 /// Argument for CeedElemRestrictionCreateStrided that L-vector is in 282 /// the Ceed backend's preferred layout. This argument should only be used 283 /// with vectors created by a Ceed backend. 284 /// @ingroup CeedElemRestriction 285 CEED_EXTERN const CeedInt CEED_STRIDES_BACKEND[3]; 286 287 CEED_EXTERN int CeedElemRestrictionCreate(Ceed ceed, CeedInterlaceMode imode, 288 CeedInt nelem, CeedInt elemsize, CeedInt nnodes, CeedInt ncomp, 289 CeedMemType mtype, CeedCopyMode cmode, const CeedInt *indices, 290 CeedElemRestriction *rstr); 291 CEED_EXTERN int CeedElemRestrictionCreateBlocked(Ceed ceed, 292 CeedInterlaceMode imode, CeedInt nelem, CeedInt elemsize, CeedInt blksize, 293 CeedInt nnodes, CeedInt ncomp, CeedMemType mtype, CeedCopyMode cmode, 294 const CeedInt *indices, CeedElemRestriction *rstr); 295 CEED_EXTERN int CeedElemRestrictionCreateStrided(Ceed ceed, 296 CeedInt nelem, CeedInt elemsize, CeedInt nnodes, CeedInt ncomp, 297 const CeedInt strides[3], CeedElemRestriction *rstr); 298 CEED_EXTERN int CeedElemRestrictionCreateBlockedStrided(Ceed ceed, 299 CeedInt nelem, CeedInt elemsize, CeedInt blksize, CeedInt nnodes, 300 CeedInt ncomp, const CeedInt strides[3], CeedElemRestriction *rstr); 301 CEED_EXTERN int CeedElemRestrictionCreateVector(CeedElemRestriction rstr, 302 CeedVector *lvec, CeedVector *evec); 303 CEED_EXTERN int CeedElemRestrictionApply(CeedElemRestriction rstr, 304 CeedTransposeMode tmode, CeedVector u, CeedVector ru, CeedRequest *request); 305 CEED_EXTERN int CeedElemRestrictionApplyBlock(CeedElemRestriction rstr, 306 CeedInt block, CeedTransposeMode tmode, CeedVector u, CeedVector ru, 307 CeedRequest *request); 308 CEED_EXTERN int CeedElemRestrictionGetIMode(CeedElemRestriction rstr, 309 CeedInterlaceMode *Imode); 310 CEED_EXTERN int CeedElemRestrictionGetNumElements(CeedElemRestriction rstr, 311 CeedInt *numelem); 312 CEED_EXTERN int CeedElemRestrictionGetElementSize(CeedElemRestriction rstr, 313 CeedInt *elemsize); 314 CEED_EXTERN int CeedElemRestrictionGetNumNodes(CeedElemRestriction rstr, 315 CeedInt *numnodes); 316 CEED_EXTERN int CeedElemRestrictionGetNumComponents(CeedElemRestriction rstr, 317 CeedInt *numcomp); 318 CEED_EXTERN int CeedElemRestrictionGetNumBlocks(CeedElemRestriction rstr, 319 CeedInt *numblk); 320 CEED_EXTERN int CeedElemRestrictionGetBlockSize(CeedElemRestriction rstr, 321 CeedInt *blksize); 322 CEED_EXTERN int CeedElemRestrictionGetMultiplicity(CeedElemRestriction rstr, 323 CeedVector mult); 324 CEED_EXTERN int CeedElemRestrictionView(CeedElemRestriction rstr, FILE *stream); 325 CEED_EXTERN int CeedElemRestrictionDestroy(CeedElemRestriction *rstr); 326 327 // The formalism here is that we have the structure 328 // \int_\Omega v^T f_0(u, \nabla u, qdata) + (\nabla v)^T f_1(u, \nabla u, qdata) 329 // where gradients are with respect to the reference element. 330 331 /// Basis evaluation mode 332 /// 333 /// Modes can be bitwise ORed when passing to most functions. 334 /// @ingroup CeedBasis 335 typedef enum { 336 /// Perform no evaluation (either because there is no data or it is already at 337 /// quadrature points) 338 CEED_EVAL_NONE = 0, 339 /// Interpolate from nodes to quadrature points 340 CEED_EVAL_INTERP = 1, 341 /// Evaluate gradients at quadrature points from input in a nodal basis 342 CEED_EVAL_GRAD = 2, 343 /// Evaluate divergence at quadrature points from input in a nodal basis 344 CEED_EVAL_DIV = 4, 345 /// Evaluate curl at quadrature points from input in a nodal basis 346 CEED_EVAL_CURL = 8, 347 /// Using no input, evaluate quadrature weights on the reference element 348 CEED_EVAL_WEIGHT = 16, 349 } CeedEvalMode; 350 351 CEED_EXTERN const char *const CeedEvalModes[]; 352 353 /// Type of quadrature; also used for location of nodes 354 /// @ingroup CeedBasis 355 typedef enum { 356 /// Gauss-Legendre quadrature 357 CEED_GAUSS = 0, 358 /// Gauss-Legendre-Lobatto quadrature 359 CEED_GAUSS_LOBATTO = 1, 360 } CeedQuadMode; 361 362 CEED_EXTERN const char *const CeedQuadModes[]; 363 364 /// Type of basis shape to create non-tensor H1 element basis 365 /// 366 /// Dimension can be extracted with bitwise AND 367 /// (CeedElemTopology & 2**(dim + 2)) == TRUE 368 /// @ingroup CeedBasis 369 typedef enum { 370 /// Line 371 CEED_LINE = 1 << 16 | 0, 372 /// Triangle - 2D shape 373 CEED_TRIANGLE = 2 << 16 | 1, 374 /// Quadralateral - 2D shape 375 CEED_QUAD = 2 << 16 | 2, 376 /// Tetrahedron - 3D shape 377 CEED_TET = 3 << 16 | 3, 378 /// Pyramid - 3D shape 379 CEED_PYRAMID = 3 << 16 | 4, 380 /// Prism - 3D shape 381 CEED_PRISM = 3 << 16 | 5, 382 /// Hexehedron - 3D shape 383 CEED_HEX = 3 << 16 | 6, 384 } CeedElemTopology; 385 386 CEED_EXTERN const char *const CeedElemTopologies[]; 387 388 CEED_EXTERN int CeedBasisCreateTensorH1Lagrange(Ceed ceed, CeedInt dim, 389 CeedInt ncomp, CeedInt P, CeedInt Q, CeedQuadMode qmode, CeedBasis *basis); 390 CEED_EXTERN int CeedBasisCreateTensorH1(Ceed ceed, CeedInt dim, CeedInt ncomp, 391 CeedInt P1d, CeedInt Q1d, 392 const CeedScalar *interp1d, 393 const CeedScalar *grad1d, 394 const CeedScalar *qref1d, 395 const CeedScalar *qweight1d, 396 CeedBasis *basis); 397 CEED_EXTERN int CeedBasisCreateH1(Ceed ceed, CeedElemTopology topo, 398 CeedInt ncomp, 399 CeedInt nnodes, CeedInt nqpts, 400 const CeedScalar *interp, 401 const CeedScalar *grad, 402 const CeedScalar *qref, 403 const CeedScalar *qweight, CeedBasis *basis); 404 CEED_EXTERN int CeedBasisView(CeedBasis basis, FILE *stream); 405 CEED_EXTERN int CeedBasisGetNumNodes(CeedBasis basis, CeedInt *P); 406 CEED_EXTERN int CeedBasisGetNumQuadraturePoints(CeedBasis basis, CeedInt *Q); 407 CEED_EXTERN int CeedBasisApply(CeedBasis basis, CeedInt nelem, 408 CeedTransposeMode tmode, 409 CeedEvalMode emode, CeedVector u, CeedVector v); 410 CEED_EXTERN int CeedBasisDestroy(CeedBasis *basis); 411 412 CEED_EXTERN int CeedGaussQuadrature(CeedInt Q, CeedScalar *qref1d, 413 CeedScalar *qweight1d); 414 CEED_EXTERN int CeedLobattoQuadrature(CeedInt Q, CeedScalar *qref1d, 415 CeedScalar *qweight1d); 416 CEED_EXTERN int CeedQRFactorization(Ceed ceed, CeedScalar *mat, CeedScalar *tau, 417 CeedInt m, CeedInt n); 418 CEED_EXTERN int CeedSymmetricSchurDecomposition(Ceed ceed, CeedScalar *mat, 419 CeedScalar *lambda, CeedInt n); 420 CEED_EXTERN int CeedSimultaneousDiagonalization(Ceed ceed, CeedScalar *matA, 421 CeedScalar *matB, CeedScalar *x, CeedScalar *lambda, CeedInt n); 422 423 /** Handle for the object describing the user CeedQFunction 424 425 @param ctx user-defined context set using CeedQFunctionSetContext() or NULL 426 427 @param Q number of quadrature points at which to evaluate 428 429 @param in array of pointers to each input argument in the order provided 430 by the user in CeedQFunctionAddInput(). Each array has shape 431 `[dim, ncomp, Q]` where `dim` is the geometric dimension for 432 \ref CEED_EVAL_GRAD (`dim=1` for \ref CEED_EVAL_INTERP) and 433 `ncomp` is the number of field components (`ncomp=1` for 434 scalar fields). This results in indexing the `i`th input at 435 quadrature point `j` as `in[i][(d*ncomp + c)*Q + j]`. 436 437 @param out array of pointers to each output array in the order provided 438 using CeedQFunctionAddOutput(). The shapes are as above for 439 \a in. 440 441 @return An error code: 0 - success, otherwise - failure 442 443 @ingroup CeedQFunction 444 **/ 445 typedef int (*CeedQFunctionUser)(void *ctx, const CeedInt Q, 446 const CeedScalar *const *in, 447 CeedScalar *const *out); 448 449 CEED_EXTERN int CeedQFunctionCreateInterior(Ceed ceed, CeedInt vlength, 450 CeedQFunctionUser f, const char *source, CeedQFunction *qf); 451 CEED_EXTERN int CeedQFunctionCreateInteriorByName(Ceed ceed, const char *name, 452 CeedQFunction *qf); 453 CEED_EXTERN int CeedQFunctionCreateIdentity(Ceed ceed, CeedInt size, 454 CeedEvalMode inmode, CeedEvalMode outmode, CeedQFunction *qf); 455 CEED_EXTERN int CeedQFunctionAddInput(CeedQFunction qf, const char *fieldname, 456 CeedInt size, CeedEvalMode emode); 457 CEED_EXTERN int CeedQFunctionAddOutput(CeedQFunction qf, const char *fieldname, 458 CeedInt size, CeedEvalMode emode); 459 CEED_EXTERN int CeedQFunctionSetContext(CeedQFunction qf, void *ctx, 460 size_t ctxsize); 461 CEED_EXTERN int CeedQFunctionView(CeedQFunction qf, FILE *stream); 462 CEED_EXTERN int CeedQFunctionApply(CeedQFunction qf, CeedInt Q, 463 CeedVector *u, CeedVector *v); 464 CEED_EXTERN int CeedQFunctionDestroy(CeedQFunction *qf); 465 466 CEED_EXTERN int CeedOperatorCreate(Ceed ceed, CeedQFunction qf, 467 CeedQFunction dqf, CeedQFunction dqfT, 468 CeedOperator *op); 469 CEED_EXTERN int CeedCompositeOperatorCreate(Ceed ceed, CeedOperator *op); 470 CEED_EXTERN int CeedOperatorSetField(CeedOperator op, const char *fieldname, 471 CeedElemRestriction r, CeedBasis b, 472 CeedVector v); 473 CEED_EXTERN int CeedCompositeOperatorAddSub(CeedOperator compositeop, 474 CeedOperator subop); 475 CEED_EXTERN int CeedOperatorAssembleLinearQFunction(CeedOperator op, 476 CeedVector *assembled, CeedElemRestriction *rstr, CeedRequest *request); 477 CEED_EXTERN int CeedOperatorAssembleLinearDiagonal(CeedOperator op, 478 CeedVector *assembled, CeedRequest *request); 479 CEED_EXTERN int CeedOperatorCreateFDMElementInverse(CeedOperator op, 480 CeedOperator *fdminv, CeedRequest *request); 481 CEED_EXTERN int CeedOperatorView(CeedOperator op, FILE *stream); 482 CEED_EXTERN int CeedOperatorApply(CeedOperator op, CeedVector in, 483 CeedVector out, CeedRequest *request); 484 CEED_EXTERN int CeedOperatorApplyAdd(CeedOperator op, CeedVector in, 485 CeedVector out, CeedRequest *request); 486 CEED_EXTERN int CeedOperatorDestroy(CeedOperator *op); 487 488 /** 489 @brief Return integer power 490 491 @param[in] base The base to exponentiate 492 @param[in] power The power to raise the base to 493 494 @return base^power 495 496 @ref Utility 497 **/ 498 static inline CeedInt CeedIntPow(CeedInt base, CeedInt power) { 499 CeedInt result = 1; 500 while (power) { 501 if (power & 1) result *= base; 502 power >>= 1; 503 base *= base; 504 } 505 return result; 506 } 507 508 /** 509 @brief Return minimum of two integers 510 511 @param[in] a The first integer to compare 512 @param[in] b The second integer to compare 513 514 @return The minimum of the two integers 515 516 @ref Utility 517 **/ 518 static inline CeedInt CeedIntMin(CeedInt a, CeedInt b) { return a < b ? a : b; } 519 520 #endif 521