GitHub-Proxy/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2025-08-12 03:39:01 +08:00
Code Issues Packages Projects Releases Wiki Activity

fix bug: with complex matrices, the condition (ei_imag(c0)==RealScalar(0)) being wrong could bypass the other condition in the &&.

Browse Source 
at least that's my explanation why the test_lu was often failing on complex matrices (it uses that via createRandomMatrixOfRank)
and why that's fixed by this diff.
also gcc 4.4 gave a warning about tailSqNorm potentially uninitialized
This commit is contained in:
Benoit Jacob 2009-08-24 00:02:22 -04:00
parent d38624b1ad
commit 0926549659
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Eigen/src/Householder/Householder.h
View File

@ -74,10 +74,10 @@ void MatrixBase<Derived>::makeHouseholder(
EIGEN_STATIC_ASSERT_VECTOR_ONLY(EssentialPart)
VectorBlock<Derived, EssentialPart::SizeAtCompileTime> tail(derived(), 1, size()-1);
RealScalar tailSqNorm;
RealScalar tailSqNorm = size()==1 ? 0 : tail.squaredNorm();
Scalar c0 = coeff(0);
if( (size()==1 || (tailSqNorm=tail.squaredNorm()) == RealScalar(0)) && ei_imag(c0)==RealScalar(0))
if( tailSqNorm == RealScalar(0) && ei_imag(c0)==RealScalar(0))
{
*tau = 0;
*beta = ei_real(c0);