Re: [eigen] unpleasant surprise mit math functions

[Christoph Hertzberg <chtz@xxxxxxxxxxxxxxxxxxxxxxxx>]

On 18.09.2012 20:25, Helmut Jarausch wrote:
> int main() {
>    int N= 5,  m= 2;
>    VectorXd t(N);
>    MatrixXd A(N,m);
>
>    A.col(0).fill(0);
>    t << 10, 20, 30, 40, 50;
>    double F = 8*atan(1.0)/50;
>    A.col(1)= sin(F*t);
>    cout << A << endl;
> }

IIRC, sin(t) is only supposed to work for array expressions, so 
sin(F*t.array()) should work. However, your example should give a 
compile-time error, so this seems to be a bug.

Christoph




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