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 /**
9 @brief Identity QFunction that copies inputs directly into outputs
10 **/
11 #include <ceed/types.h>
12
13 typedef struct {
14 CeedInt size;
15 } IdentityCtx;
16
Identity(void * ctx,const CeedInt Q,const CeedScalar * const * in,CeedScalar * const * out)17 CEED_QFUNCTION(Identity)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) {
18 // Ctx holds field size
19 IdentityCtx identity_ctx = *(IdentityCtx *)ctx;
20 const CeedInt size = identity_ctx.size;
21
22 // in[0] is input, size (Q*size)
23 const CeedScalar *input = in[0];
24 // out[0] is output, size (Q*size)
25 CeedScalar *output = out[0];
26
27 // Quadrature point loop
28 CeedPragmaSIMD for (CeedInt i = 0; i < Q * size; i++) { output[i] = input[i]; } // End of Quadrature Point Loop
29 return CEED_ERROR_SUCCESS;
30 }
31