mirror of
https://gitlab.com/libeigen/eigen.git
synced 2024-12-21 07:19:46 +08:00
38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
|
|
// for linear algebra.
|
|
//
|
|
// Copyright (C) 2019 Gael Guennebaud <gael.guennebaud@inria.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/.
|
|
|
|
#define TEST_ENABLE_TEMPORARY_TRACKING
|
|
|
|
#include "main.h"
|
|
|
|
typedef NestByValue<MatrixXd> CpyMatrixXd;
|
|
typedef CwiseBinaryOp<internal::scalar_sum_op<double,double>,const CpyMatrixXd,const CpyMatrixXd> XprType;
|
|
|
|
XprType get_xpr_with_temps(const MatrixXd& a)
|
|
{
|
|
MatrixXd t1 = a.rowwise().reverse();
|
|
MatrixXd t2 = a+a;
|
|
return t1.nestByValue() + t2.nestByValue();
|
|
}
|
|
|
|
EIGEN_DECLARE_TEST(nestbyvalue)
|
|
{
|
|
for(int i = 0; i < g_repeat; i++) {
|
|
Index rows = internal::random<Index>(1,EIGEN_TEST_MAX_SIZE);
|
|
Index cols = internal::random<Index>(1,EIGEN_TEST_MAX_SIZE);
|
|
MatrixXd a = MatrixXd(rows,cols);
|
|
nb_temporaries = 0;
|
|
XprType x = get_xpr_with_temps(a);
|
|
VERIFY_IS_EQUAL(nb_temporaries,6);
|
|
MatrixXd b = x;
|
|
VERIFY_IS_EQUAL(nb_temporaries,6+1);
|
|
VERIFY_IS_APPROX(b, a.rowwise().reverse().eval() + (a+a).eval());
|
|
}
|
|
}
|