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690bc950f7
"braces around scalar initializer"
195 lines
5.2 KiB
C++
195 lines
5.2 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) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#include "main.h"
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#include <Eigen/CXX11/Tensor>
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using Eigen::Tensor;
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template <int DataLayout>
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static void test_simple_broadcasting()
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{
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Tensor<float, 4, DataLayout> tensor(2,3,5,7);
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tensor.setRandom();
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array<ptrdiff_t, 4> broadcasts;
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broadcasts[0] = 1;
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broadcasts[1] = 1;
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broadcasts[2] = 1;
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broadcasts[3] = 1;
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Tensor<float, 4, DataLayout> no_broadcast;
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no_broadcast = tensor.broadcast(broadcasts);
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VERIFY_IS_EQUAL(no_broadcast.dimension(0), 2);
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VERIFY_IS_EQUAL(no_broadcast.dimension(1), 3);
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VERIFY_IS_EQUAL(no_broadcast.dimension(2), 5);
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VERIFY_IS_EQUAL(no_broadcast.dimension(3), 7);
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 3; ++j) {
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for (int k = 0; k < 5; ++k) {
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for (int l = 0; l < 7; ++l) {
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VERIFY_IS_EQUAL(tensor(i,j,k,l), no_broadcast(i,j,k,l));
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}
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}
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}
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}
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broadcasts[0] = 2;
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broadcasts[1] = 3;
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broadcasts[2] = 1;
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broadcasts[3] = 4;
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Tensor<float, 4, DataLayout> broadcast;
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broadcast = tensor.broadcast(broadcasts);
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VERIFY_IS_EQUAL(broadcast.dimension(0), 4);
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VERIFY_IS_EQUAL(broadcast.dimension(1), 9);
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VERIFY_IS_EQUAL(broadcast.dimension(2), 5);
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VERIFY_IS_EQUAL(broadcast.dimension(3), 28);
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for (int i = 0; i < 4; ++i) {
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for (int j = 0; j < 9; ++j) {
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for (int k = 0; k < 5; ++k) {
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for (int l = 0; l < 28; ++l) {
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VERIFY_IS_EQUAL(tensor(i%2,j%3,k%5,l%7), broadcast(i,j,k,l));
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}
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}
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}
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}
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}
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template <int DataLayout>
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static void test_vectorized_broadcasting()
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{
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Tensor<float, 3, DataLayout> tensor(8,3,5);
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tensor.setRandom();
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array<ptrdiff_t, 3> broadcasts;
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broadcasts[0] = 2;
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broadcasts[1] = 3;
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broadcasts[2] = 4;
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Tensor<float, 3, DataLayout> broadcast;
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broadcast = tensor.broadcast(broadcasts);
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VERIFY_IS_EQUAL(broadcast.dimension(0), 16);
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VERIFY_IS_EQUAL(broadcast.dimension(1), 9);
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VERIFY_IS_EQUAL(broadcast.dimension(2), 20);
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for (int i = 0; i < 16; ++i) {
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for (int j = 0; j < 9; ++j) {
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for (int k = 0; k < 20; ++k) {
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VERIFY_IS_EQUAL(tensor(i%8,j%3,k%5), broadcast(i,j,k));
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}
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}
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}
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tensor.resize(11,3,5);
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tensor.setRandom();
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broadcast = tensor.broadcast(broadcasts);
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VERIFY_IS_EQUAL(broadcast.dimension(0), 22);
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VERIFY_IS_EQUAL(broadcast.dimension(1), 9);
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VERIFY_IS_EQUAL(broadcast.dimension(2), 20);
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for (int i = 0; i < 22; ++i) {
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for (int j = 0; j < 9; ++j) {
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for (int k = 0; k < 20; ++k) {
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VERIFY_IS_EQUAL(tensor(i%11,j%3,k%5), broadcast(i,j,k));
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}
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}
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}
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}
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template <int DataLayout>
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static void test_static_broadcasting()
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{
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Tensor<float, 3, DataLayout> tensor(8,3,5);
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tensor.setRandom();
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#ifdef EIGEN_HAS_CONSTEXPR
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Eigen::IndexList<Eigen::type2index<2>, Eigen::type2index<3>, Eigen::type2index<4>> broadcasts;
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#else
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Eigen::array<int, 3> broadcasts;
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broadcasts[0] = 2;
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broadcasts[1] = 3;
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broadcasts[2] = 4;
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#endif
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Tensor<float, 3, DataLayout> broadcast;
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broadcast = tensor.broadcast(broadcasts);
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VERIFY_IS_EQUAL(broadcast.dimension(0), 16);
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VERIFY_IS_EQUAL(broadcast.dimension(1), 9);
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VERIFY_IS_EQUAL(broadcast.dimension(2), 20);
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for (int i = 0; i < 16; ++i) {
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for (int j = 0; j < 9; ++j) {
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for (int k = 0; k < 20; ++k) {
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VERIFY_IS_EQUAL(tensor(i%8,j%3,k%5), broadcast(i,j,k));
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}
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}
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}
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tensor.resize(11,3,5);
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tensor.setRandom();
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broadcast = tensor.broadcast(broadcasts);
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VERIFY_IS_EQUAL(broadcast.dimension(0), 22);
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VERIFY_IS_EQUAL(broadcast.dimension(1), 9);
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VERIFY_IS_EQUAL(broadcast.dimension(2), 20);
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for (int i = 0; i < 22; ++i) {
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for (int j = 0; j < 9; ++j) {
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for (int k = 0; k < 20; ++k) {
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VERIFY_IS_EQUAL(tensor(i%11,j%3,k%5), broadcast(i,j,k));
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}
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}
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}
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}
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template <int DataLayout>
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static void test_fixed_size_broadcasting()
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{
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// Need to add a [] operator to the Size class for this to work
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#if 0
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Tensor<float, 1, DataLayout> t1(10);
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t1.setRandom();
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TensorFixedSize<float, Sizes<1>, DataLayout> t2;
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t2 = t2.constant(20.0f);
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Tensor<float, 1, DataLayout> t3 = t1 + t2.broadcast(Eigen::array<int, 1>{10});
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for (int i = 0; i < 10; ++i) {
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VERIFY_IS_APPROX(t3(i), t1(i) + t2(0));
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}
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TensorMap<TensorFixedSize<float, Sizes<1>, DataLayout> > t4(t2.data(), {1});
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Tensor<float, 1, DataLayout> t5 = t1 + t4.broadcast(Eigen::array<int, 1>{10});
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for (int i = 0; i < 10; ++i) {
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VERIFY_IS_APPROX(t5(i), t1(i) + t2(0));
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}
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#endif
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}
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void test_cxx11_tensor_broadcasting()
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{
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CALL_SUBTEST(test_simple_broadcasting<ColMajor>());
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CALL_SUBTEST(test_simple_broadcasting<RowMajor>());
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CALL_SUBTEST(test_vectorized_broadcasting<ColMajor>());
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CALL_SUBTEST(test_vectorized_broadcasting<RowMajor>());
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CALL_SUBTEST(test_static_broadcasting<ColMajor>());
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CALL_SUBTEST(test_static_broadcasting<RowMajor>());
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CALL_SUBTEST(test_fixed_size_broadcasting<ColMajor>());
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CALL_SUBTEST(test_fixed_size_broadcasting<RowMajor>());
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}
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