// Copyright (c) 2017-2024, Lawrence Livermore National Security, LLC and other CEED contributors.
// All Rights Reserved. See the top-level LICENSE and NOTICE files for details.
//
// SPDX-License-Identifier: BSD-2-Clause
//
// This file is part of CEED:  http://github.com/ceed

/// @file
/// Linear elasticity manufactured solution true solution for solid mechanics example using PETSc

#include <ceed.h>
#include <math.h>

// -----------------------------------------------------------------------------
// True solution for linear elasticity manufactured solution
// -----------------------------------------------------------------------------
CEED_QFUNCTION(MMSTrueSoln)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) {
  // Inputs
  const CeedScalar *coords = in[0];

  // Outputs
  CeedScalar *true_soln = out[0];

  // Quadrature Point Loop
  CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) {
    // Setup
    CeedScalar x = coords[i + 0 * Q], y = coords[i + 1 * Q], z = coords[i + 2 * Q];

    // True solution
    // -- Component 1
    true_soln[i + 0 * Q] = exp(2 * x) * sin(3 * y) * cos(4 * z) / 1e8;

    // -- Component 2
    true_soln[i + 1 * Q] = exp(3 * y) * sin(4 * z) * cos(2 * x) / 1e8;

    // -- Component 3
    true_soln[i + 2 * Q] = exp(4 * z) * sin(2 * x) * cos(3 * y) / 1e8;

  }  // End of Quadrature Point Loop

  return 0;
}
// -----------------------------------------------------------------------------