1 // Copyright (c) 2017-2018, Lawrence Livermore National Security, LLC. 2 // Produced at the Lawrence Livermore National Laboratory. LLNL-CODE-734707. 3 // All Rights reserved. See files LICENSE and NOTICE for details. 4 // 5 // This file is part of CEED, a collection of benchmarks, miniapps, software 6 // libraries and APIs for efficient high-order finite element and spectral 7 // element discretizations for exascale applications. For more information and 8 // source code availability see http://github.com/ceed. 9 // 10 // The CEED research is supported by the Exascale Computing Project 17-SC-20-SC, 11 // a collaborative effort of two U.S. Department of Energy organizations (Office 12 // of Science and the National Nuclear Security Administration) responsible for 13 // the planning and preparation of a capable exascale ecosystem, including 14 // software, applications, hardware, advanced system engineering and early 15 // testbed platforms, in support of the nation's exascale computing imperative. 16 17 CEED_QFUNCTION(setup_mass)(void *ctx, const CeedInt Q, 18 const CeedScalar *const *in, 19 CeedScalar *const *out) { 20 const CeedScalar *J = in[0], *weight = in[1]; 21 CeedScalar *rho = out[0]; 22 for (CeedInt i=0; i<Q; i++) { 23 rho[i] = weight[i] * (J[i+Q*0]*J[i+Q*3] - J[i+Q*1]*J[i+Q*2]); 24 } 25 return 0; 26 } 27 28 CEED_QFUNCTION(apply)(void *ctx, const CeedInt Q, const CeedScalar *const *in, 29 CeedScalar *const *out) { 30 // in[0] is u, size (Q) 31 // in[1] is mass quadrature data, size (Q) 32 const CeedScalar *u = in[0], *qd_mass = in[1]; 33 34 // out[0] is output to multiply against v, size (Q) 35 CeedScalar *v = out[0]; 36 37 // Quadrature point loop 38 for (CeedInt i=0; i<Q; i++) { 39 // Mass 40 v[i] = qd_mass[i]*u[i]; 41 } 42 43 return 0; 44 } 45