Given a vector of reals c and a vector of integers rw, I want to create a vector z with elements z_i=c_i^rw_i. I tried to do this using the component-wise function pow, but I get a compiler error.
#include <Eigen/Core>
typedef Eigen::VectorXd RealVector;
typedef Eigen::VectorXi IntVector; // dynamically-sized vector of integers
RealVector c; c << 2, 3, 4, 5;
IntVector rw; rw << 6, 7, 8, 9;
RealVector z = c.pow(rw); **compile error**
The compiler error is
error C2664: 'const Eigen::MatrixComplexPowerReturnValue<Derived> Eigen::MatrixBase<Derived>::pow(const std::complex<double> &) const': cannot convert argument 1 from 'IntVector' to 'const double &'
with
[
Derived=Eigen::Matrix<double,-1,1,0,-1,1>
]
c:\auc\sedanal\LammSolve.h(117): note: Reason: cannot convert from 'IntVector' to 'const double'
c:\auc\sedanal\LammSolve.h(117): note: No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
What is wrong with this code? And, assuming it can be fixed, how would I do the same operation when c is a real matrix instead of a vector, to compute c_ij^b_i for all elements of c?
Compiler is Visual Studio 2015, running under 64-bit Windows 7.