GitHub-Proxy/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2025-04-23 18:19:34 +08:00
Code Issues Packages Projects Releases Wiki Activity

fix stable_norm unit test

Browse Source
This commit is contained in:
Gael Guennebaud 2009-09-18 11:41:38 +02:00
parent 0b426ea00d
commit 3b5a9acba8
2 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
Eigen/src/Householder/Householder.h
View File

@ -55,12 +55,12 @@ void MatrixBase<Derived>::makeHouseholderInPlace(Scalar *tau, RealScalar *beta)
* \f$ H = I - tau v v^*\f$
* and the vector v is:
* \f$ v^T = [1 essential^T] \f$
*
*
* On output:
* \param essential the essential part of the vector \c v
* \param tau the scaling factor of the householder transformation
* \param beta the result of H * \c *this
*
*
* \sa MatrixBase::makeHouseholderInPlace(), MatrixBase::applyHouseholderOnTheLeft(),
* MatrixBase::applyHouseholderOnTheRight()
*/
@ -73,10 +73,10 @@ void MatrixBase<Derived>::makeHouseholder(
{
EIGEN_STATIC_ASSERT_VECTOR_ONLY(EssentialPart)
VectorBlock<Derived, EssentialPart::SizeAtCompileTime> tail(derived(), 1, size()-1);
RealScalar tailSqNorm = size()==1 ? 0 : tail.squaredNorm();
Scalar c0 = coeff(0);
if(tailSqNorm == RealScalar(0) && ei_imag(c0)==RealScalar(0))
{
*tau = 0;

2
test/stable_norm.cpp
View File

@ -36,7 +36,7 @@ template<typename MatrixType> void stable_norm(const MatrixType& m)
int rows = m.rows();
int cols = m.cols();
Scalar big = ei_random<Scalar>() * std::numeric_limits<RealScalar>::max() * RealScalar(1e-4);
Scalar big = ei_abs(ei_random<Scalar>()) * (std::numeric_limits<RealScalar>::max() * RealScalar(1e-4));
Scalar small = static_cast<RealScalar>(1)/big;
MatrixType vzero = MatrixType::Zero(rows, cols),