xref: /libCEED/include/ceed/ceed.h (revision ee4ca9cbfe2be39196684117442f3ce8d00b6506)
1 /// Copyright (c) 2017-2022, Lawrence Livermore National Security, LLC and other CEED contributors.
2 /// All Rights Reserved. See the top-level LICENSE and NOTICE files for details.
3 ///
4 /// SPDX-License-Identifier: BSD-2-Clause
5 ///
6 /// This file is part of CEED:  http://github.com/ceed
7 
8 /// @file
9 /// Public header for user and utility components of libCEED
10 #ifndef _ceed_h
11 #define _ceed_h
12 
13 /// @defgroup Ceed Ceed: core components
14 /// @defgroup CeedVector CeedVector: storing and manipulating vectors
15 /// @defgroup CeedElemRestriction CeedElemRestriction: restriction from local vectors to elements
16 /// @defgroup CeedBasis CeedBasis: fully discrete finite element-like objects
17 /// @defgroup CeedQFunction CeedQFunction: independent operations at quadrature points
18 /// @defgroup CeedOperator CeedOperator: composed FE-type operations on vectors
19 ///
20 /// @page FunctionCategories libCEED: Types of Functions libCEED provides three different header files depending upon the type of functions a user
21 /// requires.
22 /// @section Utility Utility Functions
23 ///    These functions are intended general utilities that may be useful to libCEED developers and users.
24 ///    These functions can generally be found in "ceed.h".
25 /// @section User User Functions
26 ///    These functions are intended to be used by general users of libCEED and can generally be found in "ceed.h".
27 /// @section Advanced Advanced Functions
28 ///    These functions are intended to be used by advanced users of libCEED and can generally be found in "ceed.h".
29 /// @section Backend Backend Developer Functions
30 ///    These functions are intended to be used by backend developers of libCEED and can generally be found in "ceed-backend.h".
31 /// @section Developer Library Developer Functions
32 ///    These functions are intended to be used by library developers of libCEED and can generally be found in "ceed-impl.h".
33 
34 #if !defined(CEED_SKIP_VISIBILITY)
35 #define CEED_VISIBILITY(mode) __attribute__((visibility(#mode)))
36 #else
37 #define CEED_VISIBILITY(mode)
38 #endif
39 
40 /**
41   CEED_EXTERN is used in this header to denote all publicly visible symbols.
42 
43   No other file should declare publicly visible symbols, thus it should never be used outside ceed.h.
44  */
45 #if defined(__clang_analyzer__)
46 #define CEED_EXTERN extern
47 #elif defined(__cplusplus)
48 #define CEED_EXTERN extern "C" CEED_VISIBILITY(default)
49 #else
50 #define CEED_EXTERN extern CEED_VISIBILITY(default)
51 #endif
52 
53 #include <stdarg.h>
54 #include <stdbool.h>
55 #include <stdio.h>
56 
57 /// Typedefs and macros used in public interfaces and user QFunction source
58 #include "types.h"  // IWYU pragma: export
59 /// This line prevents IWYU from suggesting "ceed.h"
60 // IWYU pragma: private, include <ceed.h>
61 
62 /// Library context created by CeedInit()
63 /// @ingroup CeedUser
64 typedef struct Ceed_private *Ceed;
65 /// Non-blocking Ceed interfaces return a CeedRequest.
66 /// To perform an operation immediately, pass \ref CEED_REQUEST_IMMEDIATE instead.
67 /// @ingroup CeedUser
68 typedef struct CeedRequest_private *CeedRequest;
69 /// Handle for vectors over the field \ref CeedScalar
70 /// @ingroup CeedVectorUser
71 typedef struct CeedVector_private *CeedVector;
72 /// Handle for object describing restriction to elements
73 /// @ingroup CeedElemRestrictionUser
74 typedef struct CeedElemRestriction_private *CeedElemRestriction;
75 /// Handle for object describing discrete finite element evaluations
76 /// @ingroup CeedBasisUser
77 typedef struct CeedBasis_private *CeedBasis;
78 /// Handle for object describing CeedQFunction fields
79 /// @ingroup CeedQFunctionBackend
80 typedef struct CeedQFunctionField_private *CeedQFunctionField;
81 /// Handle for object describing functions evaluated independently at quadrature points
82 /// @ingroup CeedQFunctionUser
83 typedef struct CeedQFunction_private *CeedQFunction;
84 /// Handle for object describing CeedOperator fields
85 /// @ingroup CeedOperatorBackend
86 typedef struct CeedOperatorField_private *CeedOperatorField;
87 /// Handle for object describing context data for CeedQFunctions
88 /// @ingroup CeedQFunctionUser
89 typedef struct CeedQFunctionContext_private *CeedQFunctionContext;
90 /// Handle for object describing registered fields for CeedQFunctionContext
91 /// @ingroup CeedQFunctionUser
92 typedef struct CeedContextFieldLabel_private *CeedContextFieldLabel;
93 /// Handle for object describing FE-type operators acting on vectors
94 ///
95 /// Given an element restriction \f$E\f$, basis evaluator \f$B\f$, and quadrature function\f$f\f$, a CeedOperator expresses operations of the form
96 /// \f$E^T B^T f(B E u)\f$ acting on the vector \f$u\f$.
97 /// @ingroup CeedOperatorUser
98 typedef struct CeedOperator_private *CeedOperator;
99 
100 CEED_EXTERN int CeedRegistryGetList(size_t *n, char ***const resources, CeedInt **array);
101 CEED_EXTERN int CeedInit(const char *resource, Ceed *ceed);
102 CEED_EXTERN int CeedReferenceCopy(Ceed ceed, Ceed *ceed_copy);
103 CEED_EXTERN int CeedGetResource(Ceed ceed, const char **resource);
104 CEED_EXTERN int CeedIsDeterministic(Ceed ceed, bool *is_deterministic);
105 CEED_EXTERN int CeedAddJitSourceRoot(Ceed ceed, const char *jit_source_root);
106 CEED_EXTERN int CeedView(Ceed ceed, FILE *stream);
107 CEED_EXTERN int CeedDestroy(Ceed *ceed);
108 
109 CEED_EXTERN int CeedErrorImpl(Ceed, const char *, int, const char *, int, const char *, ...);
110 /// Raise an error on ceed object
111 ///
112 /// @param ceed Ceed library context or NULL
113 /// @param ecode Error code (int)
114 /// @param ... printf-style format string followed by arguments as needed
115 ///
116 /// @ingroup Ceed
117 /// @sa CeedSetErrorHandler()
118 #define CeedError(ceed, ecode, ...) (CeedErrorImpl((ceed), __FILE__, __LINE__, __func__, (ecode), __VA_ARGS__), (ecode))
119 
120 /// Ceed error handlers
121 CEED_EXTERN int CeedErrorReturn(Ceed, const char *, int, const char *, int, const char *, va_list *);
122 CEED_EXTERN int CeedErrorStore(Ceed, const char *, int, const char *, int, const char *, va_list *);
123 CEED_EXTERN int CeedErrorAbort(Ceed, const char *, int, const char *, int, const char *, va_list *);
124 CEED_EXTERN int CeedErrorExit(Ceed, const char *, int, const char *, int, const char *, va_list *);
125 typedef int (*CeedErrorHandler)(Ceed, const char *, int, const char *, int, const char *, va_list *);
126 CEED_EXTERN int CeedSetErrorHandler(Ceed ceed, CeedErrorHandler eh);
127 CEED_EXTERN int CeedGetErrorMessage(Ceed, const char **err_msg);
128 CEED_EXTERN int CeedResetErrorMessage(Ceed, const char **err_msg);
129 
130 /// libCEED library version numbering
131 /// @ingroup Ceed
132 #define CEED_VERSION_MAJOR 0
133 #define CEED_VERSION_MINOR 11
134 #define CEED_VERSION_PATCH 0
135 #define CEED_VERSION_RELEASE false
136 
137 /// Compile-time check that the the current library version is at least as recent as the specified version.
138 /// This macro is typically used in
139 /// @code
140 /// #if CEED_VERSION_GE(0, 8, 0)
141 ///   code path that needs at least 0.8.0
142 /// #else
143 ///   fallback code for older versions
144 /// #endif
145 /// @endcode
146 ///
147 /// A non-release version always compares as positive infinity.
148 ///
149 /// @param major   Major version
150 /// @param minor   Minor version
151 /// @param patch   Patch (subminor) version
152 ///
153 /// @ingroup Ceed
154 /// @sa CeedGetVersion()
155 #define CEED_VERSION_GE(major, minor, patch) \
156   (!CEED_VERSION_RELEASE ||                  \
157    (CEED_VERSION_MAJOR > major ||            \
158     (CEED_VERSION_MAJOR == major && (CEED_VERSION_MINOR > minor || (CEED_VERSION_MINOR == minor && CEED_VERSION_PATCH >= patch)))))
159 
160 CEED_EXTERN int CeedGetVersion(int *major, int *minor, int *patch, bool *release);
161 
162 CEED_EXTERN int CeedGetScalarType(CeedScalarType *scalar_type);
163 
164 /// String names for enum pretty printing
165 CEED_EXTERN const char *const *CeedErrorTypes;
166 CEED_EXTERN const char *const  CeedMemTypes[];
167 CEED_EXTERN const char *const  CeedCopyModes[];
168 CEED_EXTERN const char *const  CeedTransposeModes[];
169 CEED_EXTERN const char *const  CeedEvalModes[];
170 CEED_EXTERN const char *const  CeedQuadModes[];
171 CEED_EXTERN const char *const  CeedElemTopologies[];
172 CEED_EXTERN const char *const  CeedContextFieldTypes[];
173 
174 CEED_EXTERN int CeedGetPreferredMemType(Ceed ceed, CeedMemType *type);
175 
176 CEED_EXTERN int CeedVectorCreate(Ceed ceed, CeedSize len, CeedVector *vec);
177 CEED_EXTERN int CeedVectorReferenceCopy(CeedVector vec, CeedVector *vec_copy);
178 CEED_EXTERN int CeedVectorCopy(CeedVector vec, CeedVector vec_copy);
179 CEED_EXTERN int CeedVectorSetArray(CeedVector vec, CeedMemType mem_type, CeedCopyMode copy_mode, CeedScalar *array);
180 CEED_EXTERN int CeedVectorSetValue(CeedVector vec, CeedScalar value);
181 CEED_EXTERN int CeedVectorSyncArray(CeedVector vec, CeedMemType mem_type);
182 CEED_EXTERN int CeedVectorTakeArray(CeedVector vec, CeedMemType mem_type, CeedScalar **array);
183 CEED_EXTERN int CeedVectorGetArray(CeedVector vec, CeedMemType mem_type, CeedScalar **array);
184 CEED_EXTERN int CeedVectorGetArrayRead(CeedVector vec, CeedMemType mem_type, const CeedScalar **array);
185 CEED_EXTERN int CeedVectorGetArrayWrite(CeedVector vec, CeedMemType mem_type, CeedScalar **array);
186 CEED_EXTERN int CeedVectorRestoreArray(CeedVector vec, CeedScalar **array);
187 CEED_EXTERN int CeedVectorRestoreArrayRead(CeedVector vec, const CeedScalar **array);
188 CEED_EXTERN int CeedVectorNorm(CeedVector vec, CeedNormType type, CeedScalar *norm);
189 CEED_EXTERN int CeedVectorScale(CeedVector x, CeedScalar alpha);
190 CEED_EXTERN int CeedVectorAXPY(CeedVector y, CeedScalar alpha, CeedVector x);
191 CEED_EXTERN int CeedVectorAXPBY(CeedVector y, CeedScalar alpha, CeedScalar beta, CeedVector x);
192 CEED_EXTERN int CeedVectorPointwiseMult(CeedVector w, CeedVector x, CeedVector y);
193 CEED_EXTERN int CeedVectorReciprocal(CeedVector vec);
194 CEED_EXTERN int CeedVectorViewRange(CeedVector vec, CeedSize start, CeedSize stop, CeedInt step, const char *fp_fmt, FILE *stream);
195 CEED_EXTERN int CeedVectorView(CeedVector vec, const char *fp_fmt, FILE *stream);
196 CEED_EXTERN int CeedVectorGetCeed(CeedVector vec, Ceed *ceed);
197 CEED_EXTERN int CeedVectorGetLength(CeedVector vec, CeedSize *length);
198 CEED_EXTERN int CeedVectorDestroy(CeedVector *vec);
199 
200 CEED_EXTERN CeedRequest *const CEED_REQUEST_IMMEDIATE;
201 CEED_EXTERN CeedRequest *const CEED_REQUEST_ORDERED;
202 CEED_EXTERN int                CeedRequestWait(CeedRequest *req);
203 
204 /// Argument for CeedOperatorSetField that vector is collocated with quadrature points, only used with CeedEvalMode CEED_EVAL_NONE
205 /// @ingroup CeedBasis
206 CEED_EXTERN const CeedBasis CEED_BASIS_COLLOCATED;
207 
208 /// Argument for CeedOperatorSetField to use active input or output
209 /// @ingroup CeedVector
210 CEED_EXTERN const CeedVector CEED_VECTOR_ACTIVE;
211 
212 /// Argument for CeedOperatorSetField to use no vector, used with QFunction input with eval mode CEED_EVAL_WEIGHT
213 /// @ingroup CeedVector
214 CEED_EXTERN const CeedVector CEED_VECTOR_NONE;
215 
216 /// Argument for CeedOperatorSetField to use no ElemRestriction, only used with eval mode CEED_EVAL_WEIGHT.
217 /// @ingroup CeedElemRestriction
218 CEED_EXTERN const CeedElemRestriction CEED_ELEMRESTRICTION_NONE;
219 
220 /// Argument for CeedOperatorCreate that QFunction is not created by user.
221 /// Only used for QFunctions dqf and dqfT.
222 /// If implemented, a backend may attempt to provide the action of these QFunctions.
223 /// @ingroup CeedQFunction
224 CEED_EXTERN const CeedQFunction CEED_QFUNCTION_NONE;
225 
226 /// Argument for CeedElemRestrictionCreateStrided that L-vector is in the Ceed backend's preferred layout.
227 /// This argument should only be used with vectors created by a Ceed backend.
228 /// @ingroup CeedElemRestriction
229 CEED_EXTERN const CeedInt CEED_STRIDES_BACKEND[3];
230 
231 CEED_EXTERN int CeedElemRestrictionCreate(Ceed ceed, CeedInt num_elem, CeedInt elem_size, CeedInt num_comp, CeedInt comp_stride, CeedSize l_size,
232                                           CeedMemType mem_type, CeedCopyMode copy_mode, const CeedInt *offsets, CeedElemRestriction *rstr);
233 CEED_EXTERN int CeedElemRestrictionCreateOriented(Ceed ceed, CeedInt num_elem, CeedInt elem_size, CeedInt num_comp, CeedInt comp_stride,
234                                                   CeedSize l_size, CeedMemType mem_type, CeedCopyMode copy_mode, const CeedInt *offsets,
235                                                   const bool *orient, CeedElemRestriction *rstr);
236 CEED_EXTERN int CeedElemRestrictionCreateStrided(Ceed ceed, CeedInt num_elem, CeedInt elem_size, CeedInt num_comp, CeedSize l_size,
237                                                  const CeedInt strides[3], CeedElemRestriction *rstr);
238 CEED_EXTERN int CeedElemRestrictionCreateBlocked(Ceed ceed, CeedInt num_elem, CeedInt elem_size, CeedInt blk_size, CeedInt num_comp,
239                                                  CeedInt comp_stride, CeedSize l_size, CeedMemType mem_type, CeedCopyMode copy_mode,
240                                                  const CeedInt *offsets, CeedElemRestriction *rstr);
241 CEED_EXTERN int CeedElemRestrictionCreateBlockedStrided(Ceed ceed, CeedInt num_elem, CeedInt elem_size, CeedInt blk_size, CeedInt num_comp,
242                                                         CeedSize l_size, const CeedInt strides[3], CeedElemRestriction *rstr);
243 CEED_EXTERN int CeedElemRestrictionCreateUnsignedCopy(CeedElemRestriction rstr, CeedElemRestriction *rstr_unsigned);
244 CEED_EXTERN int CeedElemRestrictionReferenceCopy(CeedElemRestriction rstr, CeedElemRestriction *rstr_copy);
245 CEED_EXTERN int CeedElemRestrictionCreateVector(CeedElemRestriction rstr, CeedVector *lvec, CeedVector *evec);
246 CEED_EXTERN int CeedElemRestrictionApply(CeedElemRestriction rstr, CeedTransposeMode t_mode, CeedVector u, CeedVector ru, CeedRequest *request);
247 CEED_EXTERN int CeedElemRestrictionApplyBlock(CeedElemRestriction rstr, CeedInt block, CeedTransposeMode t_mode, CeedVector u, CeedVector ru,
248                                               CeedRequest *request);
249 CEED_EXTERN int CeedElemRestrictionGetCeed(CeedElemRestriction rstr, Ceed *ceed);
250 CEED_EXTERN int CeedElemRestrictionGetCompStride(CeedElemRestriction rstr, CeedInt *comp_stride);
251 CEED_EXTERN int CeedElemRestrictionGetNumElements(CeedElemRestriction rstr, CeedInt *num_elem);
252 CEED_EXTERN int CeedElemRestrictionGetElementSize(CeedElemRestriction rstr, CeedInt *elem_size);
253 CEED_EXTERN int CeedElemRestrictionGetLVectorSize(CeedElemRestriction rstr, CeedSize *l_size);
254 CEED_EXTERN int CeedElemRestrictionGetNumComponents(CeedElemRestriction rstr, CeedInt *num_comp);
255 CEED_EXTERN int CeedElemRestrictionGetNumBlocks(CeedElemRestriction rstr, CeedInt *num_blk);
256 CEED_EXTERN int CeedElemRestrictionGetBlockSize(CeedElemRestriction rstr, CeedInt *blk_size);
257 CEED_EXTERN int CeedElemRestrictionGetMultiplicity(CeedElemRestriction rstr, CeedVector mult);
258 CEED_EXTERN int CeedElemRestrictionView(CeedElemRestriction rstr, FILE *stream);
259 CEED_EXTERN int CeedElemRestrictionDestroy(CeedElemRestriction *rstr);
260 
261 // The formalism here is that we have the structure
262 //  \int_\Omega v^T f_0(u, \nabla u, qdata) + (\nabla v)^T f_1(u, \nabla u, qdata)
263 // where gradients are with respect to the reference element.
264 
265 CEED_EXTERN int CeedBasisCreateTensorH1Lagrange(Ceed ceed, CeedInt dim, CeedInt num_comp, CeedInt P, CeedInt Q, CeedQuadMode quad_mode,
266                                                 CeedBasis *basis);
267 CEED_EXTERN int CeedBasisCreateTensorH1(Ceed ceed, CeedInt dim, CeedInt num_comp, CeedInt P_1d, CeedInt Q_1d, const CeedScalar *interp_1d,
268                                         const CeedScalar *grad_1d, const CeedScalar *q_ref_1d, const CeedScalar *q_weight_1d, CeedBasis *basis);
269 CEED_EXTERN int CeedBasisCreateH1(Ceed ceed, CeedElemTopology topo, CeedInt num_comp, CeedInt num_nodes, CeedInt nqpts, const CeedScalar *interp,
270                                   const CeedScalar *grad, const CeedScalar *q_ref, const CeedScalar *q_weights, CeedBasis *basis);
271 CEED_EXTERN int CeedBasisCreateHdiv(Ceed ceed, CeedElemTopology topo, CeedInt num_comp, CeedInt num_nodes, CeedInt nqpts, const CeedScalar *interp,
272                                     const CeedScalar *div, const CeedScalar *q_ref, const CeedScalar *q_weights, CeedBasis *basis);
273 CEED_EXTERN int CeedBasisCreateHcurl(Ceed ceed, CeedElemTopology topo, CeedInt num_comp, CeedInt num_nodes, CeedInt nqpts, const CeedScalar *interp,
274                                      const CeedScalar *curl, const CeedScalar *q_ref, const CeedScalar *q_weights, CeedBasis *basis);
275 CEED_EXTERN int CeedBasisCreateProjection(CeedBasis basis_from, CeedBasis basis_to, CeedBasis *basis_project);
276 CEED_EXTERN int CeedBasisReferenceCopy(CeedBasis basis, CeedBasis *basis_copy);
277 CEED_EXTERN int CeedBasisView(CeedBasis basis, FILE *stream);
278 CEED_EXTERN int CeedBasisApply(CeedBasis basis, CeedInt num_elem, CeedTransposeMode t_mode, CeedEvalMode eval_mode, CeedVector u, CeedVector v);
279 CEED_EXTERN int CeedBasisGetCeed(CeedBasis basis, Ceed *ceed);
280 CEED_EXTERN int CeedBasisGetDimension(CeedBasis basis, CeedInt *dim);
281 CEED_EXTERN int CeedBasisGetTopology(CeedBasis basis, CeedElemTopology *topo);
282 CEED_EXTERN int CeedBasisGetNumComponents(CeedBasis basis, CeedInt *num_comp);
283 CEED_EXTERN int CeedBasisGetNumNodes(CeedBasis basis, CeedInt *P);
284 CEED_EXTERN int CeedBasisGetNumNodes1D(CeedBasis basis, CeedInt *P_1d);
285 CEED_EXTERN int CeedBasisGetNumQuadraturePoints(CeedBasis basis, CeedInt *Q);
286 CEED_EXTERN int CeedBasisGetNumQuadraturePoints1D(CeedBasis basis, CeedInt *Q_1d);
287 CEED_EXTERN int CeedBasisGetQRef(CeedBasis basis, const CeedScalar **q_ref);
288 CEED_EXTERN int CeedBasisGetQWeights(CeedBasis basis, const CeedScalar **q_weights);
289 CEED_EXTERN int CeedBasisGetInterp(CeedBasis basis, const CeedScalar **interp);
290 CEED_EXTERN int CeedBasisGetInterp1D(CeedBasis basis, const CeedScalar **interp_1d);
291 CEED_EXTERN int CeedBasisGetGrad(CeedBasis basis, const CeedScalar **grad);
292 CEED_EXTERN int CeedBasisGetGrad1D(CeedBasis basis, const CeedScalar **grad_1d);
293 CEED_EXTERN int CeedBasisGetDiv(CeedBasis basis, const CeedScalar **div);
294 CEED_EXTERN int CeedBasisGetCurl(CeedBasis basis, const CeedScalar **curl);
295 CEED_EXTERN int CeedBasisDestroy(CeedBasis *basis);
296 
297 CEED_EXTERN int CeedGaussQuadrature(CeedInt Q, CeedScalar *q_ref_1d, CeedScalar *q_weight_1d);
298 CEED_EXTERN int CeedLobattoQuadrature(CeedInt Q, CeedScalar *q_ref_1d, CeedScalar *q_weight_1d);
299 
300 /** Handle for the user provided CeedQFunction callback function
301 
302  @param[in,out] ctx  User-defined context set using CeedQFunctionSetContext() or NULL
303  @param[in] Q        Number of quadrature points at which to evaluate
304  @param[in] in       Array of pointers to each input argument in the order provided by the user in CeedQFunctionAddInput().
305                        Each array has shape `[dim, num_comp, Q]` where `dim` is the geometric dimension for \ref CEED_EVAL_GRAD (`dim=1` for \ref
306 CEED_EVAL_INTERP) and `num_comp` is the number of field components (`num_comp=1` for scalar fields). This results in indexing the `i`th input at
307 quadrature point `j` as `in[i][(d*num_comp + c)*Q + j]`.
308  @param[out]   out   Array of pointers to each output array in the order provided using CeedQFunctionAddOutput().
309                        The shapes are as above for \a in.
310 
311  @return An error code: 0 - success, otherwise - failure
312 
313  @ingroup CeedQFunction
314 **/
315 typedef int (*CeedQFunctionUser)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out);
316 
317 CEED_EXTERN int CeedQFunctionCreateInterior(Ceed ceed, CeedInt vec_length, CeedQFunctionUser f, const char *source, CeedQFunction *qf);
318 CEED_EXTERN int CeedQFunctionCreateInteriorByName(Ceed ceed, const char *name, CeedQFunction *qf);
319 CEED_EXTERN int CeedQFunctionCreateIdentity(Ceed ceed, CeedInt size, CeedEvalMode in_mode, CeedEvalMode out_mode, CeedQFunction *qf);
320 CEED_EXTERN int CeedQFunctionReferenceCopy(CeedQFunction qf, CeedQFunction *qf_copy);
321 CEED_EXTERN int CeedQFunctionAddInput(CeedQFunction qf, const char *field_name, CeedInt size, CeedEvalMode eval_mode);
322 CEED_EXTERN int CeedQFunctionAddOutput(CeedQFunction qf, const char *field_name, CeedInt size, CeedEvalMode eval_mode);
323 CEED_EXTERN int CeedQFunctionGetFields(CeedQFunction qf, CeedInt *num_input_fields, CeedQFunctionField **input_fields, CeedInt *num_output_fields,
324                                        CeedQFunctionField **output_fields);
325 CEED_EXTERN int CeedQFunctionSetContext(CeedQFunction qf, CeedQFunctionContext ctx);
326 CEED_EXTERN int CeedQFunctionSetContextWritable(CeedQFunction qf, bool is_writable);
327 CEED_EXTERN int CeedQFunctionSetUserFlopsEstimate(CeedQFunction qf, CeedSize flops);
328 CEED_EXTERN int CeedQFunctionView(CeedQFunction qf, FILE *stream);
329 CEED_EXTERN int CeedQFunctionGetCeed(CeedQFunction qf, Ceed *ceed);
330 CEED_EXTERN int CeedQFunctionApply(CeedQFunction qf, CeedInt Q, CeedVector *u, CeedVector *v);
331 CEED_EXTERN int CeedQFunctionDestroy(CeedQFunction *qf);
332 
333 CEED_EXTERN int CeedQFunctionFieldGetName(CeedQFunctionField qf_field, char **field_name);
334 CEED_EXTERN int CeedQFunctionFieldGetSize(CeedQFunctionField qf_field, CeedInt *size);
335 CEED_EXTERN int CeedQFunctionFieldGetEvalMode(CeedQFunctionField qf_field, CeedEvalMode *eval_mode);
336 
337 /** Handle for the user provided CeedQFunctionContextDataDestroy callback function
338 
339  @param[in,out] data  User-CeedQFunctionContext data
340 
341  @return An error code: 0 - success, otherwise - failure
342 
343  @ingroup CeedQFunction
344 **/
345 typedef int (*CeedQFunctionContextDataDestroyUser)(void *data);
346 
347 CEED_EXTERN int CeedQFunctionContextCreate(Ceed ceed, CeedQFunctionContext *ctx);
348 CEED_EXTERN int CeedQFunctionContextReferenceCopy(CeedQFunctionContext ctx, CeedQFunctionContext *ctx_copy);
349 CEED_EXTERN int CeedQFunctionContextSetData(CeedQFunctionContext ctx, CeedMemType mem_type, CeedCopyMode copy_mode, size_t size, void *data);
350 CEED_EXTERN int CeedQFunctionContextTakeData(CeedQFunctionContext ctx, CeedMemType mem_type, void *data);
351 CEED_EXTERN int CeedQFunctionContextGetData(CeedQFunctionContext ctx, CeedMemType mem_type, void *data);
352 CEED_EXTERN int CeedQFunctionContextGetDataRead(CeedQFunctionContext ctx, CeedMemType mem_type, void *data);
353 CEED_EXTERN int CeedQFunctionContextRestoreData(CeedQFunctionContext ctx, void *data);
354 CEED_EXTERN int CeedQFunctionContextRestoreDataRead(CeedQFunctionContext ctx, void *data);
355 CEED_EXTERN int CeedQFunctionContextRegisterDouble(CeedQFunctionContext ctx, const char *field_name, size_t field_offset, size_t num_values,
356                                                    const char *field_description);
357 CEED_EXTERN int CeedQFunctionContextRegisterInt32(CeedQFunctionContext ctx, const char *field_name, size_t field_offset, size_t num_values,
358                                                   const char *field_description);
359 CEED_EXTERN int CeedQFunctionContextGetAllFieldLabels(CeedQFunctionContext ctx, const CeedContextFieldLabel **field_labels, CeedInt *num_fields);
360 CEED_EXTERN int CeedContextFieldLabelGetDescription(CeedContextFieldLabel label, const char **field_name, const char **field_description,
361                                                     size_t *num_values, CeedContextFieldType *field_type);
362 CEED_EXTERN int CeedQFunctionContextGetContextSize(CeedQFunctionContext ctx, size_t *ctx_size);
363 CEED_EXTERN int CeedQFunctionContextView(CeedQFunctionContext ctx, FILE *stream);
364 CEED_EXTERN int CeedQFunctionContextSetDataDestroy(CeedQFunctionContext ctx, CeedMemType f_mem_type, CeedQFunctionContextDataDestroyUser f);
365 CEED_EXTERN int CeedQFunctionContextDestroy(CeedQFunctionContext *ctx);
366 
367 CEED_EXTERN int CeedOperatorCreate(Ceed ceed, CeedQFunction qf, CeedQFunction dqf, CeedQFunction dqfT, CeedOperator *op);
368 CEED_EXTERN int CeedCompositeOperatorCreate(Ceed ceed, CeedOperator *op);
369 CEED_EXTERN int CeedOperatorReferenceCopy(CeedOperator op, CeedOperator *op_copy);
370 CEED_EXTERN int CeedOperatorSetField(CeedOperator op, const char *field_name, CeedElemRestriction r, CeedBasis b, CeedVector v);
371 CEED_EXTERN int CeedOperatorGetFields(CeedOperator op, CeedInt *num_input_fields, CeedOperatorField **input_fields, CeedInt *num_output_fields,
372                                       CeedOperatorField **output_fields);
373 CEED_EXTERN int CeedCompositeOperatorAddSub(CeedOperator composite_op, CeedOperator sub_op);
374 CEED_EXTERN int CeedCompositeOperatorGetNumSub(CeedOperator op, CeedInt *num_suboperators);
375 CEED_EXTERN int CeedCompositeOperatorGetSubList(CeedOperator op, CeedOperator **sub_operators);
376 CEED_EXTERN int CeedOperatorCheckReady(CeedOperator op);
377 CEED_EXTERN int CeedOperatorGetActiveVectorLengths(CeedOperator op, CeedSize *input_size, CeedSize *output_size);
378 CEED_EXTERN int CeedOperatorSetQFunctionAssemblyReuse(CeedOperator op, bool reuse_assembly_data);
379 CEED_EXTERN int CeedOperatorSetQFunctionAssemblyDataUpdateNeeded(CeedOperator op, bool needs_data_update);
380 CEED_EXTERN int CeedOperatorLinearAssembleQFunction(CeedOperator op, CeedVector *assembled, CeedElemRestriction *rstr, CeedRequest *request);
381 CEED_EXTERN int CeedOperatorLinearAssembleQFunctionBuildOrUpdate(CeedOperator op, CeedVector *assembled, CeedElemRestriction *rstr,
382                                                                  CeedRequest *request);
383 CEED_EXTERN int CeedOperatorLinearAssembleDiagonal(CeedOperator op, CeedVector assembled, CeedRequest *request);
384 CEED_EXTERN int CeedOperatorLinearAssembleAddDiagonal(CeedOperator op, CeedVector assembled, CeedRequest *request);
385 CEED_EXTERN int CeedOperatorLinearAssemblePointBlockDiagonal(CeedOperator op, CeedVector assembled, CeedRequest *request);
386 CEED_EXTERN int CeedOperatorLinearAssembleAddPointBlockDiagonal(CeedOperator op, CeedVector assembled, CeedRequest *request);
387 CEED_EXTERN int CeedOperatorLinearAssembleSymbolic(CeedOperator op, CeedSize *num_entries, CeedInt **rows, CeedInt **cols);
388 CEED_EXTERN int CeedOperatorLinearAssemble(CeedOperator op, CeedVector values);
389 CEED_EXTERN int CeedCompositeOperatorGetMultiplicity(CeedOperator op, CeedInt num_skip_indices, CeedInt *skip_indices, CeedVector mult);
390 CEED_EXTERN int CeedOperatorMultigridLevelCreate(CeedOperator op_fine, CeedVector p_mult_fine, CeedElemRestriction rstr_coarse,
391                                                  CeedBasis basis_coarse, CeedOperator *op_coarse, CeedOperator *op_prolong,
392                                                  CeedOperator *op_restrict);
393 CEED_EXTERN int CeedOperatorMultigridLevelCreateTensorH1(CeedOperator op_fine, CeedVector p_mult_fine, CeedElemRestriction rstr_coarse,
394                                                          CeedBasis basis_coarse, const CeedScalar *interp_c_to_f, CeedOperator *op_coarse,
395                                                          CeedOperator *op_prolong, CeedOperator *op_restrict);
396 CEED_EXTERN int CeedOperatorMultigridLevelCreateH1(CeedOperator op_fine, CeedVector p_mult_fine, CeedElemRestriction rstr_coarse,
397                                                    CeedBasis basis_coarse, const CeedScalar *interp_c_to_f, CeedOperator *op_coarse,
398                                                    CeedOperator *op_prolong, CeedOperator *op_restrict);
399 CEED_EXTERN int CeedOperatorCreateFDMElementInverse(CeedOperator op, CeedOperator *fdm_inv, CeedRequest *request);
400 CEED_EXTERN int CeedOperatorSetNumQuadraturePoints(CeedOperator op, CeedInt num_qpts);
401 CEED_EXTERN int CeedOperatorSetName(CeedOperator op, const char *name);
402 CEED_EXTERN int CeedOperatorView(CeedOperator op, FILE *stream);
403 CEED_EXTERN int CeedOperatorGetCeed(CeedOperator op, Ceed *ceed);
404 CEED_EXTERN int CeedOperatorGetNumElements(CeedOperator op, CeedInt *num_elem);
405 CEED_EXTERN int CeedOperatorGetNumQuadraturePoints(CeedOperator op, CeedInt *num_qpts);
406 CEED_EXTERN int CeedOperatorGetFlopsEstimate(CeedOperator op, CeedSize *flops);
407 CEED_EXTERN int CeedOperatorGetContext(CeedOperator op, CeedQFunctionContext *ctx);
408 CEED_EXTERN int CeedOperatorGetContextFieldLabel(CeedOperator op, const char *field_name, CeedContextFieldLabel *field_label);
409 CEED_EXTERN int CeedOperatorSetContextDouble(CeedOperator op, CeedContextFieldLabel field_label, double *values);
410 CEED_EXTERN int CeedOperatorGetContextDoubleRead(CeedOperator op, CeedContextFieldLabel field_label, size_t *num_values, const double **values);
411 CEED_EXTERN int CeedOperatorRestoreContextDoubleRead(CeedOperator op, CeedContextFieldLabel field_label, const double **values);
412 CEED_EXTERN int CeedOperatorSetContextInt32(CeedOperator op, CeedContextFieldLabel field_label, int *values);
413 CEED_EXTERN int CeedOperatorGetContextInt32Read(CeedOperator op, CeedContextFieldLabel field_label, size_t *num_values, const int **values);
414 CEED_EXTERN int CeedOperatorRestoreContextInt32Read(CeedOperator op, CeedContextFieldLabel field_label, const int **values);
415 CEED_EXTERN int CeedOperatorApply(CeedOperator op, CeedVector in, CeedVector out, CeedRequest *request);
416 CEED_EXTERN int CeedOperatorApplyAdd(CeedOperator op, CeedVector in, CeedVector out, CeedRequest *request);
417 CEED_EXTERN int CeedOperatorDestroy(CeedOperator *op);
418 
419 CEED_EXTERN int CeedOperatorGetFieldByName(CeedOperator op, const char *field_name, CeedOperatorField *op_field);
420 CEED_EXTERN int CeedOperatorFieldGetName(CeedOperatorField op_field, char **field_name);
421 CEED_EXTERN int CeedOperatorFieldGetElemRestriction(CeedOperatorField op_field, CeedElemRestriction *rstr);
422 CEED_EXTERN int CeedOperatorFieldGetBasis(CeedOperatorField op_field, CeedBasis *basis);
423 CEED_EXTERN int CeedOperatorFieldGetVector(CeedOperatorField op_field, CeedVector *vec);
424 
425 /**
426   @brief Return integer power
427 
428   @param[in] base  The base to exponentiate
429   @param[in] power The power to raise the base to
430 
431   @return base^power
432 
433   @ref Utility
434 **/
435 static inline CeedInt CeedIntPow(CeedInt base, CeedInt power) {
436   CeedInt result = 1;
437   while (power) {
438     if (power & 1) result *= base;
439     power >>= 1;
440     base *= base;
441   }
442   return result;
443 }
444 
445 /**
446   @brief Return minimum of two integers
447 
448   @param[in] a The first integer to compare
449   @param[in] b The second integer to compare
450 
451   @return The minimum of the two integers
452 
453   @ref Utility
454 **/
455 static inline CeedInt CeedIntMin(CeedInt a, CeedInt b) { return a < b ? a : b; }
456 
457 /**
458   @brief Return maximum of two integers
459 
460   @param[in] a The first integer to compare
461   @param[in] b The second integer to compare
462 
463   @return The maximum of the two integers
464 
465   @ref Utility
466 **/
467 static inline CeedInt CeedIntMax(CeedInt a, CeedInt b) { return a > b ? a : b; }
468 
469 // Used to ensure initialization before CeedInit()
470 CEED_EXTERN int CeedRegisterAll(void);
471 // Used to ensure initialization before CeedQFunctionCreate*()
472 CEED_EXTERN int CeedQFunctionRegisterAll(void);
473 
474 #endif
475