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eigen/test/initializer_list_construction.cpp
David Tellenbach db152b9ee6 PR 572: Add initializer list constructors to Matrix and Array (include unit tests and doc) 
- {1,2,3,4,5,...} for fixed-size vectors only
- {{1,2,3},{4,5,6}} for the general cases
- {{1,2,3,4,5,....}} is allowed for both row and column-vector
2019-01-21 16:25:57 +01:00

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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2019 David Tellenbach <david.tellenbach@tellnotes.org>
//
// 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/.
#define EIGEN_NO_STATIC_ASSERT
#include "main.h"
template<typename Scalar, bool is_integer = NumTraits<Scalar>::IsInteger>
struct TestMethodDispatching {
static void run() {}
};
template<typename Scalar>
struct TestMethodDispatching<Scalar, 1> {
static void run()
{
{
Matrix<Scalar, Dynamic, Dynamic> m {3, 4};
Array<Scalar, Dynamic, Dynamic> a {3, 4};
VERIFY(m.rows() == 3);
VERIFY(m.cols() == 4);
VERIFY(a.rows() == 3);
VERIFY(a.cols() == 4);
}
{
Matrix<Scalar, 1, 2> m {3, 4};
Array<Scalar, 1, 2> a {3, 4};
VERIFY(m(0) == 3);
VERIFY(m(1) == 4);
VERIFY(a(0) == 3);
VERIFY(a(1) == 4);
}
{
Matrix<Scalar, 2, 1> m {3, 4};
Array<Scalar, 2, 1> a {3, 4};
VERIFY(m(0) == 3);
VERIFY(m(1) == 4);
VERIFY(a(0) == 3);
VERIFY(a(1) == 4);
}
}
};
template<typename Scalar> void singleInitializerListVectorConstruction()
{
Scalar raw[4];
for(int k = 0; k < 4; ++k) {
raw[k] = internal::random<Scalar>();
}
{
Matrix<Scalar, 1, 4> m { raw[0], raw[1], raw[2], raw[3] };
Array<Scalar, 1, 4> a { raw[0], raw[1], raw[2], raw[3] };
for(int k = 0; k < 4; ++k) {
VERIFY(m(k) == raw[k]);
}
for(int k = 0; k < 4; ++k) {
VERIFY(a(k) == raw[k]);
}
VERIFY_IS_EQUAL(m, (Matrix<Scalar, 1, 4>(raw[0], raw[1], raw[2], raw[3])));
VERIFY_IS_EQUAL(m, (Matrix<Scalar, 1, 4>({raw[0], raw[1], raw[2], raw[3]})));
VERIFY((a == (Array<Scalar, 1, 4>(raw[0], raw[1], raw[2], raw[3]))).all());
VERIFY((a == (Array<Scalar, 1, 4>({raw[0], raw[1], raw[2], raw[3]}))).all());
}
{
Matrix<Scalar, 4, 1> m { raw[0], raw[1], raw[2], raw[3] };
Array<Scalar, 4, 1> a { raw[0], raw[1], raw[2], raw[3] };
for(int k = 0; k < 4; ++k) {
VERIFY(m(k) == raw[k]);
}
for(int k = 0; k < 4; ++k) {
VERIFY(a(k) == raw[k]);
}
VERIFY_IS_EQUAL(m, (Matrix<Scalar, 4, 1>(raw[0], raw[1], raw[2], raw[3])));
VERIFY_IS_EQUAL(m, (Matrix<Scalar, 4, 1>({raw[0], raw[1], raw[2], raw[3]})));
VERIFY((a == (Array<Scalar, 4, 1>(raw[0], raw[1], raw[2], raw[3]))).all());
VERIFY((a == (Array<Scalar, 4, 1>({raw[0], raw[1], raw[2], raw[3]}))).all());
}
}
template<typename Scalar> void initializerListVectorConstruction()
{
Scalar raw[4];
for(int k = 0; k < 4; ++k) {
raw[k] = internal::random<Scalar>();
}
{
Matrix<Scalar, 4, 1> m { {raw[0]}, {raw[1]},{raw[2]},{raw[3]} };
Array<Scalar, 4, 1> a { {raw[0]}, {raw[1]}, {raw[2]}, {raw[3]} };
for(int k = 0; k < 4; ++k) {
VERIFY(m(k) == raw[k]);
}
for(int k = 0; k < 4; ++k) {
VERIFY(a(k) == raw[k]);
}
VERIFY_IS_EQUAL(m, (Matrix<Scalar,4,1>({ {raw[0]}, {raw[1]}, {raw[2]}, {raw[3]} })));
VERIFY((a == (Array<Scalar,4,1>({ {raw[0]}, {raw[1]}, {raw[2]}, {raw[3]} }))).all());
}
{
Matrix<Scalar, 1, 4> m { {raw[0], raw[1], raw[2], raw[3]} };
Array<Scalar, 1, 4> a { {raw[0], raw[1], raw[2], raw[3]} };
for(int k = 0; k < 4; ++k) {
VERIFY(m(k) == raw[k]);
}
for(int k = 0; k < 4; ++k) {
VERIFY(a(k) == raw[k]);
}
VERIFY_IS_EQUAL(m, (Matrix<Scalar, 1, 4>({{raw[0],raw[1],raw[2],raw[3]}})));
VERIFY((a == (Array<Scalar, 1, 4>({{raw[0],raw[1],raw[2],raw[3]}}))).all());
}
{
Matrix<Scalar, 4, Dynamic> m { {raw[0]}, {raw[1]}, {raw[2]}, {raw[3]} };
Array<Scalar, 4, Dynamic> a { {raw[0]}, {raw[1]}, {raw[2]}, {raw[3]} };
for(int k=0; k < 4; ++k) {
VERIFY(m(k) == raw[k]);
}
for(int k=0; k < 4; ++k) {
VERIFY(a(k) == raw[k]);
}
VERIFY_IS_EQUAL(m, (Matrix<Scalar, 4, Dynamic>({ {raw[0]}, {raw[1]}, {raw[2]}, {raw[3]} })));
VERIFY((a == (Array<Scalar, 4, Dynamic>({ {raw[0]}, {raw[1]}, {raw[2]}, {raw[3]} }))).all());
}
{
Matrix<Scalar, Dynamic, 4> m {{raw[0],raw[1],raw[2],raw[3]}};
Array<Scalar, Dynamic, 4> a {{raw[0],raw[1],raw[2],raw[3]}};
for(int k=0; k < 4; ++k) {
VERIFY(m(k) == raw[k]);
}
for(int k=0; k < 4; ++k) {
VERIFY(a(k) == raw[k]);
}
VERIFY_IS_EQUAL(m, (Matrix<Scalar, Dynamic, 4>({{raw[0],raw[1],raw[2],raw[3]}})));
VERIFY((a == (Array<Scalar, Dynamic, 4>({{raw[0],raw[1],raw[2],raw[3]}}))).all());
}
}
template<typename Scalar> void initializerListMatrixConstruction()
{
const Index RowsAtCompileTime = 5;
const Index ColsAtCompileTime = 4;
const Index SizeAtCompileTime = RowsAtCompileTime * ColsAtCompileTime;
Scalar raw[SizeAtCompileTime];
for (int i = 0; i < SizeAtCompileTime; ++i) {
raw[i] = internal::random<Scalar>();
}
{
Matrix<Scalar, Dynamic, Dynamic> m {};
VERIFY(m.cols() == 0);
VERIFY(m.rows() == 0);
VERIFY_IS_EQUAL(m, (Matrix<Scalar, Dynamic, Dynamic>()));
}
{
Matrix<Scalar, 5, 4> m {
{raw[0], raw[1], raw[2], raw[3]},
{raw[4], raw[5], raw[6], raw[7]},
{raw[8], raw[9], raw[10], raw[11]},
{raw[12], raw[13], raw[14], raw[15]},
{raw[16], raw[17], raw[18], raw[19]}
};
Matrix<Scalar, 5, 4> m2;
m2 << raw[0], raw[1], raw[2], raw[3],
raw[4], raw[5], raw[6], raw[7],
raw[8], raw[9], raw[10], raw[11],
raw[12], raw[13], raw[14], raw[15],
raw[16], raw[17], raw[18], raw[19];
int k = 0;
for(int i = 0; i < RowsAtCompileTime; ++i) {
for (int j = 0; j < ColsAtCompileTime; ++j) {
VERIFY(m(i, j) == raw[k]);
++k;
}
}
VERIFY_IS_EQUAL(m, m2);
}
{
Matrix<Scalar, Dynamic, Dynamic> m{
{raw[0], raw[1], raw[2], raw[3]},
{raw[4], raw[5], raw[6], raw[7]},
{raw[8], raw[9], raw[10], raw[11]},
{raw[12], raw[13], raw[14], raw[15]},
{raw[16], raw[17], raw[18], raw[19]}
};
VERIFY(m.cols() == 4);
VERIFY(m.rows() == 5);
int k = 0;
for(int i = 0; i < RowsAtCompileTime; ++i) {
for (int j = 0; j < ColsAtCompileTime; ++j) {
VERIFY(m(i, j) == raw[k]);
++k;
}
}
Matrix<Scalar, Dynamic, Dynamic> m2(RowsAtCompileTime, ColsAtCompileTime);
k = 0;
for(int i = 0; i < RowsAtCompileTime; ++i) {
for (int j = 0; j < ColsAtCompileTime; ++j) {
m2(i, j) = raw[k];
++k;
}
}
VERIFY_IS_EQUAL(m, m2);
}
}
template<typename Scalar> void initializerListArrayConstruction()
{
const Index RowsAtCompileTime = 5;
const Index ColsAtCompileTime = 4;
const Index SizeAtCompileTime = RowsAtCompileTime * ColsAtCompileTime;
Scalar raw[SizeAtCompileTime];
for (int i = 0; i < SizeAtCompileTime; ++i) {
raw[i] = internal::random<Scalar>();
}
{
Array<Scalar, Dynamic, Dynamic> a {};
VERIFY(a.cols() == 0);
VERIFY(a.rows() == 0);
}
{
Array<Scalar, 5, 4> m {
{raw[0], raw[1], raw[2], raw[3]},
{raw[4], raw[5], raw[6], raw[7]},
{raw[8], raw[9], raw[10], raw[11]},
{raw[12], raw[13], raw[14], raw[15]},
{raw[16], raw[17], raw[18], raw[19]}
};
Array<Scalar, 5, 4> m2;
m2 << raw[0], raw[1], raw[2], raw[3],
raw[4], raw[5], raw[6], raw[7],
raw[8], raw[9], raw[10], raw[11],
raw[12], raw[13], raw[14], raw[15],
raw[16], raw[17], raw[18], raw[19];
int k = 0;
for(int i = 0; i < RowsAtCompileTime; ++i) {
for (int j = 0; j < ColsAtCompileTime; ++j) {
VERIFY(m(i, j) == raw[k]);
++k;
}
}
VERIFY_IS_APPROX(m, m2);
}
{
Array<Scalar, Dynamic, Dynamic> m {
{raw[0], raw[1], raw[2], raw[3]},
{raw[4], raw[5], raw[6], raw[7]},
{raw[8], raw[9], raw[10], raw[11]},
{raw[12], raw[13], raw[14], raw[15]},
{raw[16], raw[17], raw[18], raw[19]}
};
VERIFY(m.cols() == 4);
VERIFY(m.rows() == 5);
int k = 0;
for(int i = 0; i < RowsAtCompileTime; ++i) {
for (int j = 0; j < ColsAtCompileTime; ++j) {
VERIFY(m(i, j) == raw[k]);
++k;
}
}
Array<Scalar, Dynamic, Dynamic> m2(RowsAtCompileTime, ColsAtCompileTime);
k = 0;
for(int i = 0; i < RowsAtCompileTime; ++i) {
for (int j = 0; j < ColsAtCompileTime; ++j) {
m2(i, j) = raw[k];
++k;
}
}
VERIFY_IS_APPROX(m, m2);
}
}
template<typename Scalar> void dynamicVectorConstruction()
{
const Index size = 4;
Scalar raw[size];
for (int i = 0; i < size; ++i) {
raw[i] = internal::random<Scalar>();
}
typedef Matrix<Scalar, Dynamic, 1> VectorX;
{
VectorX v {{raw[0], raw[1], raw[2], raw[3]}};
for (int i = 0; i < size; ++i) {
VERIFY(v(i) == raw[i]);
}
VERIFY(v.rows() == size);
VERIFY(v.cols() == 1);
VERIFY_IS_EQUAL(v, (VectorX {{raw[0], raw[1], raw[2], raw[3]}}));
}
{
VERIFY_RAISES_ASSERT((VectorX {raw[0], raw[1], raw[2], raw[3]}));
}
{
VERIFY_RAISES_ASSERT((VectorX {
{raw[0], raw[1], raw[2], raw[3]},
{raw[0], raw[1], raw[2], raw[3]},
}));
}
}
EIGEN_DECLARE_TEST(initializer_list_construction)
{
CALL_SUBTEST_1(initializerListVectorConstruction<unsigned char>());
CALL_SUBTEST_1(initializerListVectorConstruction<float>());
CALL_SUBTEST_1(initializerListVectorConstruction<double>());
CALL_SUBTEST_1(initializerListVectorConstruction<int>());
CALL_SUBTEST_1(initializerListVectorConstruction<long int>());
CALL_SUBTEST_1(initializerListVectorConstruction<std::ptrdiff_t>());
CALL_SUBTEST_1(initializerListVectorConstruction<std::complex<int>>());
CALL_SUBTEST_1(initializerListVectorConstruction<std::complex<double>>());
CALL_SUBTEST_1(initializerListVectorConstruction<std::complex<float>>());
CALL_SUBTEST_2(initializerListMatrixConstruction<unsigned char>());
CALL_SUBTEST_2(initializerListMatrixConstruction<float>());
CALL_SUBTEST_2(initializerListMatrixConstruction<double>());
CALL_SUBTEST_2(initializerListMatrixConstruction<int>());
CALL_SUBTEST_2(initializerListMatrixConstruction<long int>());
CALL_SUBTEST_2(initializerListMatrixConstruction<std::ptrdiff_t>());
CALL_SUBTEST_2(initializerListMatrixConstruction<std::complex<int>>());
CALL_SUBTEST_2(initializerListMatrixConstruction<std::complex<double>>());
CALL_SUBTEST_2(initializerListMatrixConstruction<std::complex<float>>());
CALL_SUBTEST_3(initializerListArrayConstruction<unsigned char>());
CALL_SUBTEST_3(initializerListArrayConstruction<float>());
CALL_SUBTEST_3(initializerListArrayConstruction<double>());
CALL_SUBTEST_3(initializerListArrayConstruction<int>());
CALL_SUBTEST_3(initializerListArrayConstruction<long int>());
CALL_SUBTEST_3(initializerListArrayConstruction<std::ptrdiff_t>());
CALL_SUBTEST_3(initializerListArrayConstruction<std::complex<int>>());
CALL_SUBTEST_3(initializerListArrayConstruction<std::complex<double>>());
CALL_SUBTEST_3(initializerListArrayConstruction<std::complex<float>>());
CALL_SUBTEST_4(singleInitializerListVectorConstruction<unsigned char>());
CALL_SUBTEST_4(singleInitializerListVectorConstruction<float>());
CALL_SUBTEST_4(singleInitializerListVectorConstruction<double>());
CALL_SUBTEST_4(singleInitializerListVectorConstruction<int>());
CALL_SUBTEST_4(singleInitializerListVectorConstruction<long int>());
CALL_SUBTEST_4(singleInitializerListVectorConstruction<std::ptrdiff_t>());
CALL_SUBTEST_4(singleInitializerListVectorConstruction<std::complex<int>>());
CALL_SUBTEST_4(singleInitializerListVectorConstruction<std::complex<double>>());
CALL_SUBTEST_4(singleInitializerListVectorConstruction<std::complex<float>>());
CALL_SUBTEST_5(TestMethodDispatching<int>::run());
CALL_SUBTEST_5(TestMethodDispatching<long int>::run());
CALL_SUBTEST_6(dynamicVectorConstruction<unsigned char>());
CALL_SUBTEST_6(dynamicVectorConstruction<float>());
CALL_SUBTEST_6(dynamicVectorConstruction<double>());
CALL_SUBTEST_6(dynamicVectorConstruction<int>());
CALL_SUBTEST_6(dynamicVectorConstruction<long int>());
CALL_SUBTEST_6(dynamicVectorConstruction<std::ptrdiff_t>());
CALL_SUBTEST_6(dynamicVectorConstruction<std::complex<int>>());
CALL_SUBTEST_6(dynamicVectorConstruction<std::complex<double>>());
CALL_SUBTEST_6(dynamicVectorConstruction<std::complex<float>>());
}
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