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author | Benoit Steiner <benoit.steiner.goog@gmail.com> | 2015-07-16 09:04:05 -0700 |
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committer | Benoit Steiner <benoit.steiner.goog@gmail.com> | 2015-07-16 09:04:05 -0700 |
commit | 05787f83679a640df93a26ebf5eb398e52045de9 (patch) | |
tree | c38086a77b2e87750a67c358b74b9adf3e1e3f37 /unsupported/test/cxx11_tensor_inflation.cpp | |
parent | b900fe47d5cc435915c8348fa1ffb6ac339c0f50 (diff) |
Added support for tensor inflation.
Diffstat (limited to 'unsupported/test/cxx11_tensor_inflation.cpp')
-rw-r--r-- | unsupported/test/cxx11_tensor_inflation.cpp | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/unsupported/test/cxx11_tensor_inflation.cpp b/unsupported/test/cxx11_tensor_inflation.cpp new file mode 100644 index 000000000..4997935e9 --- /dev/null +++ b/unsupported/test/cxx11_tensor_inflation.cpp @@ -0,0 +1,81 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2015 Ke Yang <yangke@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" + +#include <Eigen/CXX11/Tensor> + +using Eigen::Tensor; + +template<int DataLayout> +static void test_simple_inflation() +{ + Tensor<float, 4, DataLayout> tensor(2,3,5,7); + tensor.setRandom(); + array<ptrdiff_t, 4> strides; + + strides[0] = 1; + strides[1] = 1; + strides[2] = 1; + strides[3] = 1; + + Tensor<float, 4, DataLayout> no_stride; + no_stride = tensor.inflate(strides); + + VERIFY_IS_EQUAL(no_stride.dimension(0), 2); + VERIFY_IS_EQUAL(no_stride.dimension(1), 3); + VERIFY_IS_EQUAL(no_stride.dimension(2), 5); + VERIFY_IS_EQUAL(no_stride.dimension(3), 7); + + for (int i = 0; i < 2; ++i) { + for (int j = 0; j < 3; ++j) { + for (int k = 0; k < 5; ++k) { + for (int l = 0; l < 7; ++l) { + VERIFY_IS_EQUAL(tensor(i,j,k,l), no_stride(i,j,k,l)); + } + } + } + } + + strides[0] = 2; + strides[1] = 4; + strides[2] = 2; + strides[3] = 3; + Tensor<float, 4, DataLayout> inflated; + inflated = tensor.inflate(strides); + + VERIFY_IS_EQUAL(inflated.dimension(0), 3); + VERIFY_IS_EQUAL(inflated.dimension(1), 9); + VERIFY_IS_EQUAL(inflated.dimension(2), 9); + VERIFY_IS_EQUAL(inflated.dimension(3), 19); + + for (int i = 0; i < 3; ++i) { + for (int j = 0; j < 9; ++j) { + for (int k = 0; k < 9; ++k) { + for (int l = 0; l < 19; ++l) { + if (i % 2 == 0 && + j % 4 == 0 && + k % 2 == 0 && + l % 3 == 0) { + VERIFY_IS_EQUAL(inflated(i,j,k,l), + tensor(i/2, j/4, k/2, l/3)); + } else { + VERIFY_IS_EQUAL(0, inflated(i,j,k,l)); + } + } + } + } + } +} + +void test_cxx11_tensor_inflation() +{ + CALL_SUBTEST(test_simple_inflation<ColMajor>()); + CALL_SUBTEST(test_simple_inflation<RowMajor>()); +} |