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67 lines
2.5 KiB
C++
67 lines
2.5 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2009 Benoit Jacob <jacob.benoit.1@gmail.com>
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//
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// Eigen is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 3 of the License, or (at your option) any later version.
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//
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// Alternatively, you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of
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// the License, or (at your option) any later version.
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//
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// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License and a copy of the GNU General Public License along with
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// Eigen. If not, see <http://www.gnu.org/licenses/>.
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#include "main.h"
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template<typename Scalar>
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void test_first_aligned_helper(Scalar *array, int size)
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{
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const int packet_size = sizeof(Scalar) * ei_packet_traits<Scalar>::size;
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VERIFY(((size_t(array) + sizeof(Scalar) * ei_first_aligned(array, size)) % packet_size) == 0);
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}
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template<typename Scalar>
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void test_none_aligned_helper(Scalar *array, int size)
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{
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EIGEN_UNUSED_VARIABLE(array);
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EIGEN_UNUSED_VARIABLE(size);
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VERIFY(ei_packet_traits<Scalar>::size == 1 || ei_first_aligned(array, size) == size);
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}
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struct some_non_vectorizable_type { float x; };
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void test_first_aligned()
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{
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EIGEN_ALIGN16 float array_float[100];
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test_first_aligned_helper(array_float, 50);
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test_first_aligned_helper(array_float+1, 50);
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test_first_aligned_helper(array_float+2, 50);
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test_first_aligned_helper(array_float+3, 50);
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test_first_aligned_helper(array_float+4, 50);
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test_first_aligned_helper(array_float+5, 50);
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EIGEN_ALIGN16 double array_double[100];
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test_first_aligned_helper(array_double, 50);
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test_first_aligned_helper(array_double+1, 50);
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test_first_aligned_helper(array_double+2, 50);
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double *array_double_plus_4_bytes = (double*)(size_t(array_double)+4);
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test_none_aligned_helper(array_double_plus_4_bytes, 50);
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test_none_aligned_helper(array_double_plus_4_bytes+1, 50);
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some_non_vectorizable_type array_nonvec[100];
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test_first_aligned_helper(array_nonvec, 100);
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test_none_aligned_helper(array_nonvec, 100);
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}
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