1 // Copyright (c) 2017-2025, 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 use clap::Parser; 9 10 // ---------------------------------------------------------------------------- 11 // Command line arguments 12 // ---------------------------------------------------------------------------- 13 #[derive(Debug, Parser)] 14 #[command( 15 name = "libCEED Rust Example 2 - Surface Area", 16 about = "This example illustrates a simple usage of libCEED to compute the surface area of a body using matrix-free application of a diffusion operator." 17 )] 18 pub(crate) struct Opt { 19 /// libCEED backend resource to use 20 #[arg(name = "CEED", short, long = "ceed", default_value = "/cpu/self")] 21 pub(crate) ceed_spec: String, 22 /// Mesh dimension 23 #[arg(short, long = "dimension", default_value = "3")] 24 pub(crate) dim: usize, 25 /// Polynomial degree for the mesh 26 #[arg(short, long, default_value = "4")] 27 pub(crate) mesh_degree: usize, 28 /// Polynomial degree for the solution 29 #[arg(short = 'p', long, default_value = "4")] 30 pub(crate) solution_degree: usize, 31 /// Number of quadrature points in 1D 32 #[arg(short = 'q', long, default_value = "6")] 33 pub(crate) num_qpts: usize, 34 /// Approximate problem size 35 #[arg(name = "DoF", short = 's', long = "problem_size", default_value = "-1")] 36 pub(crate) problem_size_requested: i64, 37 /// Test mode 38 #[arg(short, long)] 39 pub(crate) test: bool, 40 /// Quiet mode 41 #[arg(short = 'x', long)] 42 pub(crate) quiet: bool, 43 /// Use QFunctions from the Gallery instead of example 44 #[arg(short, long)] 45 pub(crate) gallery: bool, 46 } 47 48 // ---------------------------------------------------------------------------- 49