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Add bind1st_op and bind2nd_op helpers to turn binary functors into unary ones, and implement scalar_multiple2 and scalar_quotient2 on top of them.

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Gael Guennebaud
2016-06-13 16:18:59 +02:00
parent 7a9ef7bbb4
commit 3c12e24164
4 changed files with 115 additions and 58 deletions
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8
unsupported/Eigen/src/AutoDiff/AutoDiffScalar.h
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@@ -426,18 +426,18 @@ struct auto_diff_special_op<_DerType, true>
}
inline const AutoDiffScalar<typename CwiseUnaryOp<scalar_multiple2_op<Scalar,Real>, DerType>::Type >
inline const AutoDiffScalar<typename CwiseUnaryOp<bind2nd_op<scalar_product_op<Scalar,Real> >, DerType>::Type >
operator*(const Real& other) const
{
return AutoDiffScalar<typename CwiseUnaryOp<scalar_multiple2_op<Scalar,Real>, DerType>::Type >(
return AutoDiffScalar<typename CwiseUnaryOp<bind2nd_op<scalar_product_op<Scalar,Real> >, DerType>::Type >(
derived().value() * other,
derived().derivatives() * other);
}
friend inline const AutoDiffScalar<typename CwiseUnaryOp<scalar_multiple2_op<Scalar,Real>, DerType>::Type >
friend inline const AutoDiffScalar<typename CwiseUnaryOp<bind1st_op<scalar_product_op<Real,Scalar> >, DerType>::Type >
operator*(const Real& other, const AutoDiffScalar<_DerType>& a)
{
return AutoDiffScalar<typename CwiseUnaryOp<scalar_multiple2_op<Scalar,Real>, DerType>::Type >(
return AutoDiffScalar<typename CwiseUnaryOp<bind1st_op<scalar_product_op<Real,Scalar> >, DerType>::Type >(
a.value() * other,
a.derivatives() * other);
}