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add operator+ scalar to AutoDiffScalar

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This commit is contained in:
Gael Guennebaud 2009-10-16 11:27:04 +02:00
parent d177c1f3ac
commit 44ba4b1d6d
1 changed files with 16 additions and 0 deletions
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16
unsupported/Eigen/src/AutoDiff/AutoDiffScalar.h
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@ -108,6 +108,22 @@ class AutoDiffScalar
inline const DerType& derivatives() const { return m_derivatives; }
inline DerType& derivatives() { return m_derivatives; }
inline const AutoDiffScalar<DerType> operator+(const Scalar& other) const
{
return AutoDiffScalar<DerType>(m_value + other, m_derivatives);
}
friend inline const AutoDiffScalar<DerType> operator+(const Scalar& a, const AutoDiffScalar& b)
{
return AutoDiffScalar<DerType>(a + b.value(), b.derivatives());
}
inline AutoDiffScalar& operator+=(const Scalar& other)
{
value() += other;
return *this;
}
template<typename OtherDerType>
inline const AutoDiffScalar<CwiseBinaryOp<ei_scalar_sum_op<Scalar>,DerType,OtherDerType> >
operator+(const AutoDiffScalar<OtherDerType>& other) const