1 // This file is part of Eigen, a lightweight C++ template library 2 // for linear algebra. 3 // 4 // Copyright (C) 2009 Benoit Jacob <jacob.benoit.1 (at) gmail.com> 5 // 6 // This Source Code Form is subject to the terms of the Mozilla 7 // Public License v. 2.0. If a copy of the MPL was not distributed 8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 9 10 #include "main.h" 11 12 template<typename Scalar> 13 void test_first_aligned_helper(Scalar *array, int size) 14 { 15 const int packet_size = sizeof(Scalar) * internal::packet_traits<Scalar>::size; 16 VERIFY(((size_t(array) + sizeof(Scalar) * internal::first_aligned(array, size)) % packet_size) == 0); 17 } 18 19 template<typename Scalar> 20 void test_none_aligned_helper(Scalar *array, int size) 21 { 22 EIGEN_UNUSED_VARIABLE(array); 23 EIGEN_UNUSED_VARIABLE(size); 24 VERIFY(internal::packet_traits<Scalar>::size == 1 || internal::first_aligned(array, size) == size); 25 } 26 27 struct some_non_vectorizable_type { float x; }; 28 29 void test_first_aligned() 30 { 31 EIGEN_ALIGN16 float array_float[100]; 32 test_first_aligned_helper(array_float, 50); 33 test_first_aligned_helper(array_float+1, 50); 34 test_first_aligned_helper(array_float+2, 50); 35 test_first_aligned_helper(array_float+3, 50); 36 test_first_aligned_helper(array_float+4, 50); 37 test_first_aligned_helper(array_float+5, 50); 38 39 EIGEN_ALIGN16 double array_double[100]; 40 test_first_aligned_helper(array_double, 50); 41 test_first_aligned_helper(array_double+1, 50); 42 test_first_aligned_helper(array_double+2, 50); 43 44 double *array_double_plus_4_bytes = (double*)(size_t(array_double)+4); 45 test_none_aligned_helper(array_double_plus_4_bytes, 50); 46 test_none_aligned_helper(array_double_plus_4_bytes+1, 50); 47 48 some_non_vectorizable_type array_nonvec[100]; 49 test_first_aligned_helper(array_nonvec, 100); 50 test_none_aligned_helper(array_nonvec, 100); 51 } 52
