// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2013 Gauthier Brun <brun.gauthier@gmail.com>
// Copyright (C) 2013 Nicolas Carre <nicolas.carre@ensimag.fr>
// Copyright (C) 2013 Jean Ceccato <jean.ceccato@ensimag.fr>
// Copyright (C) 2013 Pierre Zoppitelli <pierre.zoppitelli@ensimag.fr>
//
// 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/
// discard stack allocation as that too bypasses malloc
#define EIGEN_STACK_ALLOCATION_LIMIT
0
#define EIGEN_RUNTIME_NO_MALLOC
#include "main.h"
#include <Eigen/SVD>
#include <iostream>
#include <Eigen/LU>
#define SVD_DEFAULT(M) BDCSVD<M>
#define SVD_FOR_MIN_NORM(M) BDCSVD<M>
#include "svd_common.h"
// Check all variants of JacobiSVD
template <
typename MatrixType>
void bdcsvd(
const MatrixType& a = MatrixType(),
bool pickrandom =
true )
{
MatrixType m;
if (pickrandom) {
m.resizeLike(a);
svd_fill_random(m);
}
else
m = a;
CALL_SUBTEST(( svd_test_all_computation_options<BDCSVD<MatrixType> >(m,
false ) ));
}
template <
typename MatrixType>
void bdcsvd_method()
{
enum { Size = MatrixType::RowsAtCompileTime };
typedef typename MatrixType::RealScalar RealScalar;
typedef Matrix<RealScalar, Size,
1 > RealVecType;
MatrixType m = MatrixType::Identity();
VERIFY_IS_APPROX(m.bdcSvd().singularValues(), RealVecType::Ones());
VERIFY_RAISES_ASSERT(m.bdcSvd().matrixU());
VERIFY_RAISES_ASSERT(m.bdcSvd().matrixV());
VERIFY_IS_APPROX(m.bdcSvd(ComputeFullU|ComputeFullV).solve(m), m);
VERIFY_IS_APPROX(m.bdcSvd(ComputeFullU|ComputeFullV).transpose().solve(m), m);
VERIFY_IS_APPROX(m.bdcSvd(ComputeFullU|ComputeFullV).adjoint().solve(m), m);
}
// compare the Singular values returned with Jacobi and Bdc
template <
typename MatrixType>
void compare_bdc_jacobi(
const MatrixType& a = MatrixType(),
unsigned int computation
Options = 0 )
{
MatrixType m = MatrixType::Random(a.rows(), a.cols());
BDCSVD<MatrixType> bdc_svd(m);
JacobiSVD<MatrixType> jacobi_svd(m);
VERIFY_IS_APPROX(bdc_svd.singularValues(), jacobi_svd.singularValues());
if (computationOptions & ComputeFullU) VERIFY_IS_APPROX(bdc_svd.matrixU(), jacobi_svd.matrixU());
if (computationOptions & ComputeThinU) VERIFY_IS_APPROX(bdc_svd.matrixU(), jacobi_svd.matrixU());
if (computationOptions & ComputeFullV) VERIFY_IS_APPROX(bdc_svd.matrixV(), jacobi_svd.matrixV());
if (computationOptions & ComputeThinV) VERIFY_IS_APPROX(bdc_svd.matrixV(), jacobi_svd.matrixV());
}
EIGEN_DECLARE_TEST(bdcsvd)
{
CALL_SUBTEST_3(( svd_verify_assert<BDCSVD<Matrix3f> >(Matrix3f()) ));
CALL_SUBTEST_4(( svd_verify_assert<BDCSVD<Matrix4d> >(Matrix4d()) ));
CALL_SUBTEST_7(( svd_verify_assert<BDCSVD<MatrixXf> >(MatrixXf(10 ,12 )) ));
CALL_SUBTEST_8(( svd_verify_assert<BDCSVD<MatrixXcd> >(MatrixXcd(7 ,5 )) ));
CALL_SUBTEST_101(( svd_all_trivial_2x2(bdcsvd<Matrix2cd>) ));
CALL_SUBTEST_102(( svd_all_trivial_2x2(bdcsvd<Matrix2d>) ));
for (int i = 0 ; i < g_repeat; i++) {
CALL_SUBTEST_3(( bdcsvd<Matrix3f>() ));
CALL_SUBTEST_4(( bdcsvd<Matrix4d>() ));
CALL_SUBTEST_5(( bdcsvd<Matrix<float ,3 ,5 > >() ));
int r = internal::random<int >(1 , EIGEN_TEST_MAX_SIZE/2 ),
c = internal::random<int >(1 , EIGEN_TEST_MAX_SIZE/2 );
TEST_SET_BUT_UNUSED_VARIABLE(r)
TEST_SET_BUT_UNUSED_VARIABLE(c)
CALL_SUBTEST_6(( bdcsvd(Matrix<double ,Dynamic,2 >(r,2 )) ));
CALL_SUBTEST_7(( bdcsvd(MatrixXf(r,c)) ));
CALL_SUBTEST_7(( compare_bdc_jacobi(MatrixXf(r,c)) ));
CALL_SUBTEST_10(( bdcsvd(MatrixXd(r,c)) ));
CALL_SUBTEST_10(( compare_bdc_jacobi(MatrixXd(r,c)) ));
CALL_SUBTEST_8(( bdcsvd(MatrixXcd(r,c)) ));
CALL_SUBTEST_8(( compare_bdc_jacobi(MatrixXcd(r,c)) ));
// Test on inf/nan matrix
CALL_SUBTEST_7( (svd_inf_nan<BDCSVD<MatrixXf>, MatrixXf>()) );
CALL_SUBTEST_10( (svd_inf_nan<BDCSVD<MatrixXd>, MatrixXd>()) );
}
// test matrixbase method
CALL_SUBTEST_1(( bdcsvd_method<Matrix2cd>() ));
CALL_SUBTEST_3(( bdcsvd_method<Matrix3f>() ));
// Test problem size constructors
CALL_SUBTEST_7( BDCSVD<MatrixXf>(10 ,10 ) );
// Check that preallocation avoids subsequent mallocs
// Disabled because not supported by BDCSVD
// CALL_SUBTEST_9( svd_preallocate<void>() );
CALL_SUBTEST_2( svd_underoverflow<void >() );
}
Messung V0.5 in Prozent C=84 H=95 G=89
¤ Dauer der Verarbeitung: 0.20 Sekunden
(vorverarbeitet am 2026-06-06)
¤
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