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Consider denormals as zero in makeJacobi and 2x2 SVD.

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This also fix serious issues with x387 for which values can be much smaller than the smallest denormal!
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Gael Guennebaud
2016-07-12 17:21:03 +02:00
parent 263993a7b6
commit e2aa58b631
2 changed files with 5 additions and 3 deletions
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3
Eigen/src/misc/RealSvd2x2.h
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@@ -28,7 +28,8 @@ void real_2x2_jacobi_svd(const MatrixType& matrix, Index p, Index q,
JacobiRotation<RealScalar> rot1;
RealScalar t = m.coeff(0,0) + m.coeff(1,1);
RealScalar d = m.coeff(1,0) - m.coeff(0,1);
if(d == RealScalar(0))
if(abs(d) < (std::numeric_limits<RealScalar>::min)())
{
rot1.s() = RealScalar(0);
rot1.c() = RealScalar(1);