devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

Make nestByValue works again (broken since 3.3) and add unit tests.

Browse Source
This commit is contained in:
Gael Guennebaud
2019-01-17 18:27:25 +01:00
parent 4b7cf7ff82
commit 0fe6b7d687
3 changed files with 60 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
test/CMakeLists.txt
View File

@@ -268,6 +268,7 @@ ei_add_test(sparselu)
ei_add_test(sparseqr)
ei_add_test(umeyama)
ei_add_test(nesting_ops "${CMAKE_CXX_FLAGS_DEBUG}")
ei_add_test(nestbyvalue)
ei_add_test(zerosized)
ei_add_test(dontalign)
ei_add_test(evaluators)

37
test/nestbyvalue.cpp Normal file
View File

@@ -0,0 +1,37 @@
// 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());
}
}