henry/SimCore
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ADD: added other eigen lib

Browse Source
This commit is contained in:
Henry Winkel
2022-12-21 16:19:04 +01:00
parent a570766dc6
commit 9e56c7f2c0
832 changed files with 36586 additions and 20006 deletions
Download Patch File Download Diff File Expand all files Collapse all files

52
libs/eigen/test/constexpr.cpp Normal file
View File

@@ -0,0 +1,52 @@
// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2022 Alex Richardson <alexrichardson@google.com>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include "main.h"
EIGEN_DECLARE_TEST(constexpr) {
// Clang accepts (some of) this code when using C++14/C++17, but GCC does not like
// the fact that `T array[Size]` inside Eigen::internal::plain_array is not initialized
// until after the constructor returns:
// error: member ‘Eigen::internal::plain_array<int, 9, 0, 0>::array’ must be initialized by mem-initializer in
// ‘constexpr’ constructor
#if EIGEN_COMP_CXXVER >= 20
constexpr Matrix3i mat({{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
VERIFY_IS_EQUAL(mat.size(), 9);
VERIFY_IS_EQUAL(mat(0, 0), 1);
static_assert(mat.coeff(0,1) == 2);
constexpr Array33i arr({{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
VERIFY_IS_EQUAL(arr(0, 0), 1);
VERIFY_IS_EQUAL(arr.size(), 9);
static_assert(arr.coeff(0,1) == 2);
// Also check dynamic size arrays/matrices with fixed-size storage (currently
// only works if all elements are initialized, since otherwise the compiler
// complains about uninitialized trailing elements.
constexpr Matrix<int, Eigen::Dynamic, Eigen::Dynamic, 0, 3, 3> dyn_mat({{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
VERIFY_IS_EQUAL(dyn_mat.size(), 9);
VERIFY_IS_EQUAL(dyn_mat(0, 0), 1);
static_assert(dyn_mat.coeff(0,1) == 2);
constexpr Array<int, Eigen::Dynamic, Eigen::Dynamic, 0, 3, 3> dyn_arr({{1, 2, 3}, {4, 5, 6}, {7, 8, 9}});
VERIFY_IS_EQUAL(dyn_arr(0, 0), 1);
VERIFY_IS_EQUAL(dyn_arr.size(), 9);
static_assert(dyn_arr.coeff(0,1) == 2);
#endif // EIGEN_COMP_CXXVER >= 20
}
// Check that we can use the std::initializer_list constructor for constexpr variables.
#if EIGEN_COMP_CXXVER >= 20
// EIGEN_MAKE_UNALIGNED_ARRAY_ASSERT() will fail constexpr evaluation unless
// we have std::is_constant_evaluated().
constexpr Matrix<int, 2, 2> global_mat({{1, 2}, {3, 4}});
EIGEN_DECLARE_TEST(constexpr_global) {
VERIFY_IS_EQUAL(global_mat.size(), 4);
VERIFY_IS_EQUAL(global_mat(0, 0), 1);
static_assert(global_mat.coeff(0,0) == 1);
}
#endif // EIGEN_COMP_CXXVER >= 20