mirror of
https://gitlab.com/libeigen/eigen.git
synced 2024-12-21 07:19:46 +08:00
132 lines
3.3 KiB
C++
132 lines
3.3 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
|
|
// for linear algebra. Eigen itself is part of the KDE project.
|
|
//
|
|
// Copyright (C) 2008 Benoit Jacob <jacob.benoit.1@gmail.com>
|
|
//
|
|
// Eigen is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Lesser General Public
|
|
// License as published by the Free Software Foundation; either
|
|
// version 3 of the License, or (at your option) any later version.
|
|
//
|
|
// Alternatively, you can redistribute it and/or
|
|
// modify it under the terms of the GNU General Public License as
|
|
// published by the Free Software Foundation; either version 2 of
|
|
// the License, or (at your option) any later version.
|
|
//
|
|
// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License and a copy of the GNU General Public License along with
|
|
// Eigen. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
#include "main.h"
|
|
|
|
struct Good1
|
|
{
|
|
MatrixXd m; // good: m will allocate its own array, taking care of alignment.
|
|
Good1() : m(20,20) {}
|
|
};
|
|
|
|
struct Good2
|
|
{
|
|
Matrix3d m; // good: m's size isn't a multiple of 16 bytes, so m doesn't have to be aligned
|
|
};
|
|
|
|
struct Good3
|
|
{
|
|
Vector2f m; // good: same reason
|
|
};
|
|
|
|
struct Bad4
|
|
{
|
|
Vector2d m; // bad: sizeof(m)%16==0 so alignment is required
|
|
};
|
|
|
|
struct Bad5
|
|
{
|
|
Matrix<float, 2, 6> m; // bad: same reason
|
|
};
|
|
|
|
struct Bad6
|
|
{
|
|
Matrix<double, 3, 4> m; // bad: same reason
|
|
};
|
|
|
|
struct Good7
|
|
{
|
|
EIGEN_MAKE_ALIGNED_OPERATOR_NEW
|
|
Vector2d m;
|
|
float f; // make the struct have sizeof%16!=0 to make it a little more tricky when we allow an array of 2 such objects
|
|
};
|
|
|
|
struct Good8
|
|
{
|
|
EIGEN_MAKE_ALIGNED_OPERATOR_NEW
|
|
float f; // try the f at first -- the EIGEN_ALIGN_128 attribute of m should make that still work
|
|
Matrix4f m;
|
|
};
|
|
|
|
struct Good9
|
|
{
|
|
Matrix<float,2,2,DontAlign> m; // good: no alignment requested
|
|
float f;
|
|
};
|
|
|
|
template<bool Align> struct Depends
|
|
{
|
|
EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF(Align)
|
|
Vector2d m;
|
|
float f;
|
|
};
|
|
|
|
template<typename T>
|
|
void check_unalignedassert_good()
|
|
{
|
|
T *x, *y;
|
|
x = new T;
|
|
delete x;
|
|
y = new T[2];
|
|
delete[] y;
|
|
}
|
|
|
|
#if EIGEN_ARCH_WANTS_ALIGNMENT
|
|
template<typename T>
|
|
void check_unalignedassert_bad()
|
|
{
|
|
float buf[sizeof(T)+16];
|
|
float *unaligned = buf;
|
|
while((reinterpret_cast<std::size_t>(unaligned)&0xf)==0) ++unaligned; // make sure unaligned is really unaligned
|
|
T *x = ::new(static_cast<void*>(unaligned)) T;
|
|
x->~T();
|
|
}
|
|
#endif
|
|
|
|
void unalignedassert()
|
|
{
|
|
check_unalignedassert_good<Good1>();
|
|
check_unalignedassert_good<Good2>();
|
|
check_unalignedassert_good<Good3>();
|
|
#if EIGEN_ARCH_WANTS_ALIGNMENT
|
|
VERIFY_RAISES_ASSERT(check_unalignedassert_bad<Bad4>());
|
|
VERIFY_RAISES_ASSERT(check_unalignedassert_bad<Bad5>());
|
|
VERIFY_RAISES_ASSERT(check_unalignedassert_bad<Bad6>());
|
|
#endif
|
|
|
|
check_unalignedassert_good<Good7>();
|
|
check_unalignedassert_good<Good8>();
|
|
check_unalignedassert_good<Good9>();
|
|
check_unalignedassert_good<Depends<true> >();
|
|
|
|
#if EIGEN_ARCH_WANTS_ALIGNMENT
|
|
VERIFY_RAISES_ASSERT(check_unalignedassert_bad<Depends<false> >());
|
|
#endif
|
|
}
|
|
|
|
void test_unalignedassert()
|
|
{
|
|
CALL_SUBTEST(unalignedassert());
|
|
}
|