1 // Copyright (c) 2017-2026, 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 #include <ceed/types.h>
9
10 /// libCEED Q-function for building quadrature data for a mass operator
build_mass(void * ctx,const CeedInt Q,const CeedScalar * const * in,CeedScalar * const * out)11 CEED_QFUNCTION(build_mass)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) {
12 long long int *build_data = (long long int *)ctx;
13
14 // in[0] is Jacobians with shape [dim, dim, Q]
15 // in[1] is quadrature weights with shape [1, Q]
16 const CeedScalar *w = in[1];
17 CeedScalar *q_data = out[0];
18
19 switch (build_data[0] + 10 * build_data[1]) {
20 case 11: {
21 const CeedScalar(*J)[1][CEED_Q_VLA] = (const CeedScalar(*)[1][CEED_Q_VLA])in[0];
22
23 // Quadrature Point Loop
24 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { q_data[i] = J[0][0][i] * w[i]; } // End of Quadrature Point Loop
25 } break;
26 case 22: {
27 const CeedScalar(*J)[2][CEED_Q_VLA] = (const CeedScalar(*)[2][CEED_Q_VLA])in[0];
28
29 // Quadrature Point Loop
30 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) {
31 q_data[i] = (J[0][0][i] * J[1][1][i] - J[0][1][i] * J[1][0][i]) * w[i];
32 } // End of Quadrature Point Loop
33 } break;
34 case 33: {
35 const CeedScalar(*J)[3][CEED_Q_VLA] = (const CeedScalar(*)[3][CEED_Q_VLA])in[0];
36
37 // Quadrature Point Loop
38 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) {
39 q_data[i] =
40 (J[0][0][i] * (J[1][1][i] * J[2][2][i] - J[1][2][i] * J[2][1][i]) - J[0][1][i] * (J[1][0][i] * J[2][2][i] - J[1][2][i] * J[2][0][i]) +
41 J[0][2][i] * (J[1][0][i] * J[2][1][i] - J[1][1][i] * J[2][0][i])) *
42 w[i];
43 } // End of Quadrature Point Loop
44 } break;
45 }
46 return CEED_ERROR_SUCCESS;
47 }
48
49 /// libCEED Q-function for applying a mass operator
apply_mass(void * ctx,const CeedInt Q,const CeedScalar * const * in,CeedScalar * const * out)50 CEED_QFUNCTION(apply_mass)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) {
51 // in[0], out[0] are solution variables with shape [1, Q]
52 // in[1] is quadrature data with shape [1, Q]
53 const CeedScalar *u = in[0], *q_data = in[1];
54 CeedScalar *v = out[0];
55
56 // Quadrature Point Loop
57 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { v[i] = q_data[i] * u[i]; } // End of Quadrature Point Loop
58 return CEED_ERROR_SUCCESS;
59 }
60