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authorGravatar Benoit Steiner <benoit.steiner.goog@gmail.com>2016-10-05 18:48:55 -0700
committerGravatar Benoit Steiner <benoit.steiner.goog@gmail.com>2016-10-05 18:48:55 -0700
commit78b569f68540c5609388864bd805dcf21dd6a187 (patch)
tree0a5757bb11834d0109f99310f4493dfd63579901 /Eigen/src/Jacobi/Jacobi.h
parent9c2b6c049be19fd4c571b0df537169d277b26291 (diff)
parent4387433acf9cd2eab3713349163cd1e8905b5854 (diff)
Merged latest updates from trunk
Diffstat (limited to 'Eigen/src/Jacobi/Jacobi.h')
-rw-r--r--Eigen/src/Jacobi/Jacobi.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/Eigen/src/Jacobi/Jacobi.h b/Eigen/src/Jacobi/Jacobi.h
index 55de15e87..d25af8e90 100644
--- a/Eigen/src/Jacobi/Jacobi.h
+++ b/Eigen/src/Jacobi/Jacobi.h
@@ -85,7 +85,8 @@ bool JacobiRotation<Scalar>::makeJacobi(const RealScalar& x, const Scalar& y, co
using std::sqrt;
using std::abs;
typedef typename NumTraits<Scalar>::Real RealScalar;
- if(y == Scalar(0))
+ RealScalar deno = RealScalar(2)*abs(y);
+ if(deno < (std::numeric_limits<RealScalar>::min)())
{
m_c = Scalar(1);
m_s = Scalar(0);
@@ -93,7 +94,7 @@ bool JacobiRotation<Scalar>::makeJacobi(const RealScalar& x, const Scalar& y, co
}
else
{
- RealScalar tau = (x-z)/(RealScalar(2)*abs(y));
+ RealScalar tau = (x-z)/deno;
RealScalar w = sqrt(numext::abs2(tau) + RealScalar(1));
RealScalar t;
if(tau>RealScalar(0))