Re: [fricas-devel] Re: InputForm

On 06/03/2009 02:35 PM, Martin Rubey wrote:
> Ralf Hemmecke <[email protected]> writes:
> 
>> Is there an easy way to get a linear output (not 2d-output), i.e.,
>> which looks exactly like the input?
> 
> (1) -> x+y^2 
> 
>          2
>    (1)  y  + x
>                                         Type: Polynomial(Integer)
> (2) -> (x+y^2 )::INFORM
> 
>    (2)  (+ (** y 2) x)
>                                         Type: InputForm
> (3) -> unparse((x+y^2 )::INFORM)
> 
>    (3)  "y^2+x"
>                                         Type: String
> 
> 
> This is, in my opinion a hack, in case you want linear *output*.  It
> should be relatively easy though, to provide something similar to
> TexFormat, that provides a coercion from outputform to "linearform".
> Would actually be nice.

I don't yet know what unparse does, but do you think that

   lin z == unparse(z::InputForm)::Symbol::OutputForm

should do the job also for other expressions than polynomials?

Seems to be working for matrices...

(5) -> m:=matrix [[1,2],[3,4]]

         +1  2+
    (5)  |    |
         +3  4+
                                        Type: Matrix(Integer)
(6) -> lin m
    Compiling function lin with type Matrix(Integer) -> OutputForm

    (6)  matrix([[1,2],[3,4]])
                                        Type: OutputForm

Thanks a lot!!!

Ralf