1 | // This file is part of Eigen, a lightweight C++ template library
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2 | // for linear algebra.
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3 | //
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4 | // Copyright (C) 2009 Benoit Jacob <jacob.benoit.1@gmail.com>
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5 | //
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6 | // This Source Code Form is subject to the terms of the Mozilla
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7 | // Public License v. 2.0. If a copy of the MPL was not distributed
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8 | // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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9 |
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10 | #include "main.h"
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11 |
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12 | template<typename Scalar>
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13 | void test_eigen2_first_aligned_helper(Scalar *array, int size)
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14 | {
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15 | const int packet_size = sizeof(Scalar) * ei_packet_traits<Scalar>::size;
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16 | VERIFY(((std::size_t(array) + sizeof(Scalar) * ei_alignmentOffset(array, size)) % packet_size) == 0);
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17 | }
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18 |
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19 | template<typename Scalar>
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20 | void test_eigen2_none_aligned_helper(Scalar *array, int size)
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21 | {
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22 | VERIFY(ei_packet_traits<Scalar>::size == 1 || ei_alignmentOffset(array, size) == size);
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23 | }
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24 |
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25 | struct some_non_vectorizable_type { float x; };
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26 |
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27 | void test_eigen2_first_aligned()
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28 | {
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29 | EIGEN_ALIGN_128 float array_float[100];
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30 | test_first_aligned_helper(array_float, 50);
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31 | test_first_aligned_helper(array_float+1, 50);
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32 | test_first_aligned_helper(array_float+2, 50);
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33 | test_first_aligned_helper(array_float+3, 50);
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34 | test_first_aligned_helper(array_float+4, 50);
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35 | test_first_aligned_helper(array_float+5, 50);
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36 |
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37 | EIGEN_ALIGN_128 double array_double[100];
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38 | test_first_aligned_helper(array_double, 50);
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39 | test_first_aligned_helper(array_double+1, 50);
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40 | test_first_aligned_helper(array_double+2, 50);
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41 |
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42 | double *array_double_plus_4_bytes = (double*)(std::size_t(array_double)+4);
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43 | test_none_aligned_helper(array_double_plus_4_bytes, 50);
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44 | test_none_aligned_helper(array_double_plus_4_bytes+1, 50);
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45 |
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46 | some_non_vectorizable_type array_nonvec[100];
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47 | test_first_aligned_helper(array_nonvec, 100);
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48 | test_none_aligned_helper(array_nonvec, 100);
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49 | }
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