226 lines
11 KiB
C++
226 lines
11 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) 2017 Gael Guennebaud <gael.guennebaud@inria.fr>
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// Copyright (C) 2014 yoco <peter.xiau@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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using Eigen::placeholders::all;
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using Eigen::placeholders::last;
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template <typename T1, typename T2>
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std::enable_if_t<internal::is_same<T1, T2>::value, bool> is_same_eq(const T1& a, const T2& b) {
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return (a.array() == b.array()).all();
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}
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template <int Order, typename MatType>
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void check_auto_reshape4x4(MatType m) {
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internal::VariableAndFixedInt<MatType::SizeAtCompileTime == Dynamic ? -1 : 1> v1(1);
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internal::VariableAndFixedInt<MatType::SizeAtCompileTime == Dynamic ? -1 : 2> v2(2);
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internal::VariableAndFixedInt<MatType::SizeAtCompileTime == Dynamic ? -1 : 4> v4(4);
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internal::VariableAndFixedInt<MatType::SizeAtCompileTime == Dynamic ? -1 : 8> v8(8);
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internal::VariableAndFixedInt<MatType::SizeAtCompileTime == Dynamic ? -1 : 16> v16(16);
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VERIFY(is_same_eq(m.template reshaped<Order>(1, AutoSize), m.template reshaped<Order>(1, 16)));
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VERIFY(is_same_eq(m.template reshaped<Order>(AutoSize, 16), m.template reshaped<Order>(1, 16)));
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VERIFY(is_same_eq(m.template reshaped<Order>(2, AutoSize), m.template reshaped<Order>(2, 8)));
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VERIFY(is_same_eq(m.template reshaped<Order>(AutoSize, 8), m.template reshaped<Order>(2, 8)));
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VERIFY(is_same_eq(m.template reshaped<Order>(4, AutoSize), m.template reshaped<Order>(4, 4)));
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VERIFY(is_same_eq(m.template reshaped<Order>(AutoSize, 4), m.template reshaped<Order>(4, 4)));
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VERIFY(is_same_eq(m.template reshaped<Order>(8, AutoSize), m.template reshaped<Order>(8, 2)));
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VERIFY(is_same_eq(m.template reshaped<Order>(AutoSize, 2), m.template reshaped<Order>(8, 2)));
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VERIFY(is_same_eq(m.template reshaped<Order>(16, AutoSize), m.template reshaped<Order>(16, 1)));
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VERIFY(is_same_eq(m.template reshaped<Order>(AutoSize, 1), m.template reshaped<Order>(16, 1)));
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VERIFY(is_same_eq(m.template reshaped<Order>(fix<1>, AutoSize), m.template reshaped<Order>(fix<1>, v16)));
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VERIFY(is_same_eq(m.template reshaped<Order>(AutoSize, fix<16>), m.template reshaped<Order>(v1, fix<16>)));
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VERIFY(is_same_eq(m.template reshaped<Order>(fix<2>, AutoSize), m.template reshaped<Order>(fix<2>, v8)));
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VERIFY(is_same_eq(m.template reshaped<Order>(AutoSize, fix<8>), m.template reshaped<Order>(v2, fix<8>)));
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VERIFY(is_same_eq(m.template reshaped<Order>(fix<4>, AutoSize), m.template reshaped<Order>(fix<4>, v4)));
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VERIFY(is_same_eq(m.template reshaped<Order>(AutoSize, fix<4>), m.template reshaped<Order>(v4, fix<4>)));
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VERIFY(is_same_eq(m.template reshaped<Order>(fix<8>, AutoSize), m.template reshaped<Order>(fix<8>, v2)));
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VERIFY(is_same_eq(m.template reshaped<Order>(AutoSize, fix<2>), m.template reshaped<Order>(v8, fix<2>)));
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VERIFY(is_same_eq(m.template reshaped<Order>(fix<16>, AutoSize), m.template reshaped<Order>(fix<16>, v1)));
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VERIFY(is_same_eq(m.template reshaped<Order>(AutoSize, fix<1>), m.template reshaped<Order>(v16, fix<1>)));
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}
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template <typename MatType>
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void check_direct_access_reshape4x4(MatType, internal::FixedInt<RowMajorBit>) {}
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template <typename MatType>
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void check_direct_access_reshape4x4(MatType m, internal::FixedInt<0>) {
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VERIFY_IS_EQUAL(m.reshaped(1, 16).data(), m.data());
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VERIFY_IS_EQUAL(m.reshaped(1, 16).innerStride(), 1);
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VERIFY_IS_EQUAL(m.reshaped(2, 8).data(), m.data());
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VERIFY_IS_EQUAL(m.reshaped(2, 8).innerStride(), 1);
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VERIFY_IS_EQUAL(m.reshaped(2, 8).outerStride(), 2);
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}
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// just test a 4x4 matrix, enumerate all combination manually
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template <typename MatType>
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void reshape4x4(MatType m) {
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typedef typename MatType::Scalar Scalar;
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internal::VariableAndFixedInt<MatType::SizeAtCompileTime == Dynamic ? -1 : 1> v1(1);
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internal::VariableAndFixedInt<MatType::SizeAtCompileTime == Dynamic ? -1 : 2> v2(2);
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internal::VariableAndFixedInt<MatType::SizeAtCompileTime == Dynamic ? -1 : 4> v4(4);
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internal::VariableAndFixedInt<MatType::SizeAtCompileTime == Dynamic ? -1 : 8> v8(8);
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internal::VariableAndFixedInt<MatType::SizeAtCompileTime == Dynamic ? -1 : 16> v16(16);
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if ((MatType::Flags & RowMajorBit) == 0) {
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typedef Map<MatrixXi> MapMat;
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// dynamic
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VERIFY_IS_EQUAL((m.reshaped(1, 16)), MapMat(m.data(), 1, 16));
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VERIFY_IS_EQUAL((m.reshaped(2, 8)), MapMat(m.data(), 2, 8));
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VERIFY_IS_EQUAL((m.reshaped(4, 4)), MapMat(m.data(), 4, 4));
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VERIFY_IS_EQUAL((m.reshaped(8, 2)), MapMat(m.data(), 8, 2));
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VERIFY_IS_EQUAL((m.reshaped(16, 1)), MapMat(m.data(), 16, 1));
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// static
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VERIFY_IS_EQUAL(m.reshaped(fix<1>, fix<16>), MapMat(m.data(), 1, 16));
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VERIFY_IS_EQUAL(m.reshaped(fix<2>, fix<8>), MapMat(m.data(), 2, 8));
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VERIFY_IS_EQUAL(m.reshaped(fix<4>, fix<4>), MapMat(m.data(), 4, 4));
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VERIFY_IS_EQUAL(m.reshaped(fix<8>, fix<2>), MapMat(m.data(), 8, 2));
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VERIFY_IS_EQUAL(m.reshaped(fix<16>, fix<1>), MapMat(m.data(), 16, 1));
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// reshape chain
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VERIFY_IS_EQUAL((m.reshaped(1, 16)
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.reshaped(fix<2>, fix<8>)
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.reshaped(16, 1)
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.reshaped(fix<8>, fix<2>)
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.reshaped(2, 8)
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.reshaped(fix<1>, fix<16>)
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.reshaped(4, 4)
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.reshaped(fix<16>, fix<1>)
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.reshaped(8, 2)
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.reshaped(fix<4>, fix<4>)),
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MapMat(m.data(), 4, 4));
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}
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VERIFY(is_same_eq(m.reshaped(1, AutoSize), m.reshaped(1, 16)));
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VERIFY(is_same_eq(m.reshaped(AutoSize, 16), m.reshaped(1, 16)));
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VERIFY(is_same_eq(m.reshaped(2, AutoSize), m.reshaped(2, 8)));
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VERIFY(is_same_eq(m.reshaped(AutoSize, 8), m.reshaped(2, 8)));
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VERIFY(is_same_eq(m.reshaped(4, AutoSize), m.reshaped(4, 4)));
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VERIFY(is_same_eq(m.reshaped(AutoSize, 4), m.reshaped(4, 4)));
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VERIFY(is_same_eq(m.reshaped(8, AutoSize), m.reshaped(8, 2)));
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VERIFY(is_same_eq(m.reshaped(AutoSize, 2), m.reshaped(8, 2)));
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VERIFY(is_same_eq(m.reshaped(16, AutoSize), m.reshaped(16, 1)));
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VERIFY(is_same_eq(m.reshaped(AutoSize, 1), m.reshaped(16, 1)));
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VERIFY(is_same_eq(m.reshaped(fix<1>, AutoSize), m.reshaped(fix<1>, v16)));
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VERIFY(is_same_eq(m.reshaped(AutoSize, fix<16>), m.reshaped(v1, fix<16>)));
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VERIFY(is_same_eq(m.reshaped(fix<2>, AutoSize), m.reshaped(fix<2>, v8)));
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VERIFY(is_same_eq(m.reshaped(AutoSize, fix<8>), m.reshaped(v2, fix<8>)));
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VERIFY(is_same_eq(m.reshaped(fix<4>, AutoSize), m.reshaped(fix<4>, v4)));
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VERIFY(is_same_eq(m.reshaped(AutoSize, fix<4>), m.reshaped(v4, fix<4>)));
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VERIFY(is_same_eq(m.reshaped(fix<8>, AutoSize), m.reshaped(fix<8>, v2)));
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VERIFY(is_same_eq(m.reshaped(AutoSize, fix<2>), m.reshaped(v8, fix<2>)));
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VERIFY(is_same_eq(m.reshaped(fix<16>, AutoSize), m.reshaped(fix<16>, v1)));
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VERIFY(is_same_eq(m.reshaped(AutoSize, fix<1>), m.reshaped(v16, fix<1>)));
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check_auto_reshape4x4<ColMajor>(m);
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check_auto_reshape4x4<RowMajor>(m);
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check_auto_reshape4x4<AutoOrder>(m);
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check_auto_reshape4x4<ColMajor>(m.transpose());
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check_auto_reshape4x4<ColMajor>(m.transpose());
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check_auto_reshape4x4<AutoOrder>(m.transpose());
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check_direct_access_reshape4x4(m, fix<MatType::Flags & RowMajorBit>);
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if ((MatType::Flags & RowMajorBit) == 0) {
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VERIFY_IS_EQUAL(m.template reshaped<ColMajor>(2, 8), m.reshaped(2, 8));
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VERIFY_IS_EQUAL(m.template reshaped<ColMajor>(2, 8), m.template reshaped<AutoOrder>(2, 8));
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VERIFY_IS_EQUAL(m.transpose().template reshaped<RowMajor>(2, 8), m.transpose().template reshaped<AutoOrder>(2, 8));
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} else {
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VERIFY_IS_EQUAL(m.template reshaped<ColMajor>(2, 8), m.reshaped(2, 8));
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VERIFY_IS_EQUAL(m.template reshaped<RowMajor>(2, 8), m.template reshaped<AutoOrder>(2, 8));
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VERIFY_IS_EQUAL(m.transpose().template reshaped<ColMajor>(2, 8), m.transpose().template reshaped<AutoOrder>(2, 8));
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VERIFY_IS_EQUAL(m.transpose().reshaped(2, 8), m.transpose().template reshaped<AutoOrder>(2, 8));
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}
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MatrixXi m28r1 = m.template reshaped<RowMajor>(2, 8);
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MatrixXi m28r2 = m.transpose().template reshaped<ColMajor>(8, 2).transpose();
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VERIFY_IS_EQUAL(m28r1, m28r2);
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VERIFY(is_same_eq(m.reshaped(v16, fix<1>), m.reshaped()));
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VERIFY_IS_EQUAL(m.reshaped(16, 1).eval(), m.reshaped().eval());
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VERIFY_IS_EQUAL(m.reshaped(1, 16).eval(), m.reshaped().transpose().eval());
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VERIFY_IS_EQUAL(m.reshaped().reshaped(2, 8), m.reshaped(2, 8));
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VERIFY_IS_EQUAL(m.reshaped().reshaped(4, 4), m.reshaped(4, 4));
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VERIFY_IS_EQUAL(m.reshaped().reshaped(8, 2), m.reshaped(8, 2));
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VERIFY_IS_EQUAL(m.reshaped(), m.template reshaped<ColMajor>());
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VERIFY_IS_EQUAL(m.transpose().reshaped(), m.template reshaped<RowMajor>());
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VERIFY_IS_EQUAL(m.template reshaped<RowMajor>(AutoSize, fix<1>), m.template reshaped<RowMajor>());
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VERIFY_IS_EQUAL(m.template reshaped<AutoOrder>(AutoSize, fix<1>), m.template reshaped<AutoOrder>());
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VERIFY(is_same_eq(m.reshaped(AutoSize, fix<1>), m.reshaped()));
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VERIFY_IS_EQUAL(m.template reshaped<RowMajor>(fix<1>, AutoSize), m.transpose().reshaped().transpose());
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// check assignment
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{
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Matrix<Scalar, Dynamic, 1> m1x(m.size());
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m1x.setRandom();
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VERIFY_IS_APPROX(m.reshaped() = m1x, m1x);
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VERIFY_IS_APPROX(m, m1x.reshaped(4, 4));
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Matrix<Scalar, Dynamic, Dynamic> m28(2, 8);
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m28.setRandom();
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VERIFY_IS_APPROX(m.reshaped(2, 8) = m28, m28);
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VERIFY_IS_APPROX(m, m28.reshaped(4, 4));
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VERIFY_IS_APPROX(m.template reshaped<RowMajor>(2, 8) = m28, m28);
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Matrix<Scalar, Dynamic, Dynamic> m24(2, 4);
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m24.setRandom();
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VERIFY_IS_APPROX(m(seq(0, last, 2), all).reshaped(2, 4) = m24, m24);
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// check constness:
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m.reshaped(2, 8).nestedExpression() = m;
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}
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}
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template <typename BlockType>
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void reshape_block(const BlockType& M) {
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auto dense = M.eval();
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Index rows = M.size() / 2;
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Index cols = M.size() / rows;
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VERIFY_IS_EQUAL(dense.reshaped(rows, cols), M.reshaped(rows, cols));
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for (Index i = 0; i < rows; ++i) {
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VERIFY_IS_EQUAL(dense.reshaped(rows, cols).row(i), M.reshaped(rows, cols).row(i));
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}
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for (Index j = 0; j < cols; ++j) {
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VERIFY_IS_EQUAL(dense.reshaped(rows, cols).col(j), M.reshaped(rows, cols).col(j));
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}
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}
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EIGEN_DECLARE_TEST(reshape) {
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typedef Matrix<int, Dynamic, Dynamic, RowMajor> RowMatrixXi;
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typedef Matrix<int, 4, 4, RowMajor> RowMatrix4i;
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MatrixXi mx = MatrixXi::Random(4, 4);
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Matrix4i m4 = Matrix4i::Random(4, 4);
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RowMatrixXi rmx = RowMatrixXi::Random(4, 4);
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RowMatrix4i rm4 = RowMatrix4i::Random(4, 4);
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// test dynamic-size matrix
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CALL_SUBTEST(reshape4x4(mx));
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// test static-size matrix
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CALL_SUBTEST(reshape4x4(m4));
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// test dynamic-size const matrix
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CALL_SUBTEST(reshape4x4(static_cast<const MatrixXi>(mx)));
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// test static-size const matrix
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CALL_SUBTEST(reshape4x4(static_cast<const Matrix4i>(m4)));
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CALL_SUBTEST(reshape4x4(rmx));
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CALL_SUBTEST(reshape4x4(rm4));
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CALL_SUBTEST(reshape_block(rm4.col(1)));
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}
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