Hello, On 04/10/2014 04:06 PM, Ендовицкий Егор wrote:

I'm using your library in my school project. It is about some numerical algorithms.

In my program I need ceil of sqrt of N, and I don't know how implement this using your library. Because when I'm trying to converse cl_I to cl_F, I got an error:conversion from cln::cl_I to a non-scalar type cln::cl_F requested.

Here is a brief information about my OS and PC: Gentoo Linux 3.12.13 gcc 4.7.3-r3

Check out the type system <http://www.ginac.de/CLN/cln_3.html>. You cannot convert cl_I directly to cl_F because cl_I is not a subclass of cl_F. Convert to cl_R instead, then use functions sqrt() and fceiling(). Hope that helps -richard. PS: In general, please show some simple example code when asking for advice on the list. -- Richard B. Kreckel <http://www.ginac.de/~kreckel/>