Re: [Boost-users] [proto] learning proto slowly, a small (math)complex library

Subject: Re: [Boost-users] [proto] learning proto slowly, a small (math)complex library
From: Joel Falcou (joel.falcou_at_[hidden])
Date: 2011-01-10 16:48:11

On 10/01/11 22:42, alfC wrote:
> I translated the map_list_of example into the complex example. There
> is still work to do, the code doesn't work yet. I guess I have to
> still tell proto that "complex_cartesian_expr" (didn't know what other
> name to put) is of type proto::plus<  proto::terminal<double>  ,
> proto::multiplies<proto::terminal<double>,  proto::terminal<i_tag>  >
> I don't know how to do that. complete code at the end of the email.

try

std::complex<double> z = 4. + 5.i;

Incidentally, you should have a real transform able to turn any 
complex_expression into a complex and not rely on a given fixed AST 
structure.

What if i do z = i + i + 3 + 4*i ?

You have to look up transform.