1*9ba83ac0SJeremy L Thompson // Copyright (c) 2017-2026, Lawrence Livermore National Security, LLC and other CEED contributors.
2a0154adeSJed Brown // All Rights Reserved. See the top-level LICENSE and NOTICE files for details.
3a0154adeSJed Brown //
4a0154adeSJed Brown // SPDX-License-Identifier: BSD-2-Clause
5a0154adeSJed Brown //
6a0154adeSJed Brown // This file is part of CEED: http://github.com/ceed
7a0154adeSJed Brown
8a0154adeSJed Brown /**
9a0154adeSJed Brown @brief Identity QFunction that copies inputs directly into outputs
10a0154adeSJed Brown **/
11c0b5abf0SJeremy L Thompson #include <ceed/types.h>
12c9c2c079SJeremy L Thompson
13a0154adeSJed Brown typedef struct {
14a0154adeSJed Brown CeedInt size;
15a0154adeSJed Brown } IdentityCtx;
16a0154adeSJed Brown
Identity(void * ctx,const CeedInt Q,const CeedScalar * const * in,CeedScalar * const * out)172b730f8bSJeremy L Thompson CEED_QFUNCTION(Identity)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) {
18a0154adeSJed Brown // Ctx holds field size
19a0154adeSJed Brown IdentityCtx identity_ctx = *(IdentityCtx *)ctx;
20a0154adeSJed Brown const CeedInt size = identity_ctx.size;
21a0154adeSJed Brown
22a0154adeSJed Brown // in[0] is input, size (Q*size)
23a0154adeSJed Brown const CeedScalar *input = in[0];
24a0154adeSJed Brown // out[0] is output, size (Q*size)
25a0154adeSJed Brown CeedScalar *output = out[0];
26a0154adeSJed Brown
27a0154adeSJed Brown // Quadrature point loop
282b730f8bSJeremy L Thompson CeedPragmaSIMD for (CeedInt i = 0; i < Q * size; i++) { output[i] = input[i]; } // End of Quadrature Point Loop
29a0154adeSJed Brown return CEED_ERROR_SUCCESS;
30a0154adeSJed Brown }
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