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Diffstat (limited to 'test/eigen2/eigen2_first_aligned.cpp')
-rw-r--r-- | test/eigen2/eigen2_first_aligned.cpp | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/test/eigen2/eigen2_first_aligned.cpp b/test/eigen2/eigen2_first_aligned.cpp new file mode 100644 index 000000000..51bb3cad1 --- /dev/null +++ b/test/eigen2/eigen2_first_aligned.cpp @@ -0,0 +1,49 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2009 Benoit Jacob <jacob.benoit.1@gmail.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" + +template<typename Scalar> +void test_eigen2_first_aligned_helper(Scalar *array, int size) +{ + const int packet_size = sizeof(Scalar) * ei_packet_traits<Scalar>::size; + VERIFY(((std::size_t(array) + sizeof(Scalar) * ei_alignmentOffset(array, size)) % packet_size) == 0); +} + +template<typename Scalar> +void test_eigen2_none_aligned_helper(Scalar *array, int size) +{ + VERIFY(ei_packet_traits<Scalar>::size == 1 || ei_alignmentOffset(array, size) == size); +} + +struct some_non_vectorizable_type { float x; }; + +void test_eigen2_first_aligned() +{ + EIGEN_ALIGN_128 float array_float[100]; + test_first_aligned_helper(array_float, 50); + test_first_aligned_helper(array_float+1, 50); + test_first_aligned_helper(array_float+2, 50); + test_first_aligned_helper(array_float+3, 50); + test_first_aligned_helper(array_float+4, 50); + test_first_aligned_helper(array_float+5, 50); + + EIGEN_ALIGN_128 double array_double[100]; + test_first_aligned_helper(array_double, 50); + test_first_aligned_helper(array_double+1, 50); + test_first_aligned_helper(array_double+2, 50); + + double *array_double_plus_4_bytes = (double*)(std::size_t(array_double)+4); + test_none_aligned_helper(array_double_plus_4_bytes, 50); + test_none_aligned_helper(array_double_plus_4_bytes+1, 50); + + some_non_vectorizable_type array_nonvec[100]; + test_first_aligned_helper(array_nonvec, 100); + test_none_aligned_helper(array_nonvec, 100); +} |