// This file is part of Eigen, a lightweight C++ template library // for linear algebra. // // Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com> // // 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/.
#include"product.h" #include <Eigen/LU>
template<typename T> void test_aliasing()
{ int rows = internal::random<int>(1,12); int cols = internal::random<int>(1,12); typedef Matrix<T,Dynamic,Dynamic> MatrixType; typedef Matrix<T,Dynamic,1> VectorType;
VectorType x(cols); x.setRandom();
VectorType z(x);
VectorType y(rows); y.setZero();
MatrixType A(rows,cols); A.setRandom(); // CwiseBinaryOp
VERIFY_IS_APPROX(x = y + A*x, A*z); // OK because "y + A*x" is marked as "assume-aliasing"
x = z; // CwiseUnaryOp
VERIFY_IS_APPROX(x = T(1.)*(A*x), A*z); // OK because 1*(A*x) is replaced by (1*A*x) which is a Product<> expression
x = z; // VERIFY_IS_APPROX(x = y-A*x, -A*z); // Not OK in 3.3 because x is resized before A*x gets evaluated
x = z;
}
template<int> void product_large_regressions()
{
{ // test a specific issue in DiagonalProduct int N = 1000000;
VectorXf v = VectorXf::Ones(N);
MatrixXf m = MatrixXf::Ones(N,3);
m = (v+v).asDiagonal() * m;
VERIFY_IS_APPROX(m, MatrixXf::Constant(N,3,2));
}
{ // test deferred resizing in Matrix::operator=
MatrixXf a = MatrixXf::Random(10,4), b = MatrixXf::Random(4,10), c = a;
VERIFY_IS_APPROX((a = a * b), (c * b).eval());
}
{ // check the functions to setup blocking sizes compile and do not segfault // FIXME check they do what they are supposed to do !!
std::ptrdiff_t l1 = internal::random<int>(10000,20000);
std::ptrdiff_t l2 = internal::random<int>(100000,200000);
std::ptrdiff_t l3 = internal::random<int>(1000000,2000000);
setCpuCacheSizes(l1,l2,l3);
VERIFY(l1==l1CacheSize());
VERIFY(l2==l2CacheSize());
std::ptrdiff_t k1 = internal::random<int>(10,100)*16;
std::ptrdiff_t m1 = internal::random<int>(10,100)*16;
std::ptrdiff_t n1 = internal::random<int>(10,100)*16; // only makes sure it compiles fine
internal::computeProductBlockingSizes<float,float,std::ptrdiff_t>(k1,m1,n1,1);
}
{ // test regression in row-vector by matrix (bad Map type)
MatrixXf mat1(10,32); mat1.setRandom();
MatrixXf mat2(32,32); mat2.setRandom();
MatrixXf r1 = mat1.row(2)*mat2.transpose();
VERIFY_IS_APPROX(r1, (mat1.row(2)*mat2.transpose()).eval());
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