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fix atan2 when tmp4==0

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This commit is contained in:
Gael Guennebaud 2011-09-22 17:34:25 +02:00
parent b0adbfbae7
commit 823b2105b6
1 changed files with 1 additions and 2 deletions
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3
unsupported/Eigen/src/AutoDiff/AutoDiffScalar.h
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@ -569,6 +569,7 @@ inline const AutoDiffScalar<Matrix<typename internal::traits<DerTypeA>::Scalar,D
atan2(const AutoDiffScalar<DerTypeA>& a, const AutoDiffScalar<DerTypeB>& b)
{
using std::atan2;
using std::max;
typedef typename internal::traits<DerTypeA>::Scalar Scalar;
typedef AutoDiffScalar<Matrix<Scalar,Dynamic,1> > PlainADS;
PlainADS ret;
@ -580,8 +581,6 @@ atan2(const AutoDiffScalar<DerTypeA>& a, const AutoDiffScalar<DerTypeB>& b)
if (tmp4!=0)
ret.derivatives() = (a.derivatives() * b.value() - a.value() * b.derivatives()) * (tmp2+tmp3);
else
ret.derivatives().setZero();
return ret;
}