nestbyvalue.cpp
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1 // This file is part of Eigen, a lightweight C++ template library
2 // for linear algebra.
3 //
4 // Copyright (C) 2019 Gael Guennebaud <gael.guennebaud@inria.fr>
5 //
6 // This Source Code Form is subject to the terms of the Mozilla
7 // Public License v. 2.0. If a copy of the MPL was not distributed
8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
9 
10 #define TEST_ENABLE_TEMPORARY_TRACKING
11 
12 #include "main.h"
13 
16 
17 XprType get_xpr_with_temps(const MatrixXd& a)
18 {
19  MatrixXd t1 = a.rowwise().reverse();
20  MatrixXd t2 = a+a;
21  return t1.nestByValue() + t2.nestByValue();
22 }
23 
24 EIGEN_DECLARE_TEST(nestbyvalue)
25 {
26  for(int i = 0; i < g_repeat; i++) {
27  Index rows = internal::random<Index>(1,EIGEN_TEST_MAX_SIZE);
28  Index cols = internal::random<Index>(1,EIGEN_TEST_MAX_SIZE);
29  MatrixXd a = MatrixXd(rows,cols);
30  nb_temporaries = 0;
33  MatrixXd b = x;
35  VERIFY_IS_APPROX(b, a.rowwise().reverse().eval() + (a+a).eval());
36  }
37 }
Eigen::CwiseBinaryOp
Generic expression where a coefficient-wise binary operator is applied to two expressions.
Definition: CwiseBinaryOp.h:77
VERIFY_IS_EQUAL
#define VERIFY_IS_EQUAL(a, b)
Definition: main.h:386
b
Scalar * b
Definition: benchVecAdd.cpp:17
x
set noclip points set clip one set noclip two set bar set border lt lw set xdata set ydata set zdata set x2data set y2data set boxwidth set dummy x
Definition: gnuplot_common_settings.hh:12
CpyMatrixXd
NestByValue< MatrixXd > CpyMatrixXd
Definition: nestbyvalue.cpp:14
EIGEN_DECLARE_TEST
EIGEN_DECLARE_TEST(nestbyvalue)
Definition: nestbyvalue.cpp:24
rows
int rows
Definition: Tutorial_commainit_02.cpp:1
nb_temporaries
static long int nb_temporaries
Definition: test/sparse_product.cpp:16
get_xpr_with_temps
XprType get_xpr_with_temps(const MatrixXd &a)
Definition: nestbyvalue.cpp:17
Eigen::g_repeat
static int g_repeat
Definition: main.h:169
XprType
CwiseBinaryOp< internal::scalar_sum_op< double, double >, const CpyMatrixXd, const CpyMatrixXd > XprType
Definition: nestbyvalue.cpp:15
VERIFY_IS_APPROX
#define VERIFY_IS_APPROX(a, b)
Definition: integer_types.cpp:15
a
ArrayXXi a
Definition: Array_initializer_list_23_cxx11.cpp:1
main.h
EIGEN_TEST_MAX_SIZE
#define EIGEN_TEST_MAX_SIZE
Definition: boostmultiprec.cpp:16
Eigen::NestByValue
Expression which must be nested by value.
Definition: NestByValue.h:38
cols
int cols
Definition: Tutorial_commainit_02.cpp:1
i
int i
Definition: BiCGSTAB_step_by_step.cpp:9
Eigen::Index
EIGEN_DEFAULT_DENSE_INDEX_TYPE Index
The Index type as used for the API.
Definition: Meta.h:74


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autogenerated on Fri Nov 1 2024 03:33:49