[Maxima] Re: 1. Formatted output in maxima.

Mon Apr 3 16:00:04 CDT 2006

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in lisp, (fpformat XX)  gets you a list of characters
from a bigfloat. so you might do

(coerce (fpformat XX) 'string)

and then print it using ~a specification.
There are also ways of controlling how many digits are printed even
if there are trailing zeros, with some maxima flags.

RJF

Alexei Meremianin wrote:

>Thanks to Richard Fateman for his suggestion (slightly modified here),
>-----------------------------------------------------------
>(%i7) :lisp (defun $my_formatted_output(a) (format t "~%~10,8f~% I am a new line~%"  a))
>$MY_FORMATTED_OUTPUT
>(%i7) my_formatted_output (4.4);
>
>4.40000000
> I am a new line
>(%o7) 				     false
>(%i8) 
>------------------------------------------------------------
>Does not work with bigfloats.
>How to handle that case?
>
>Alexei Meremianin <avm at mpipks-dresden.mpg.de> writes:
>
>  
>
>>Hello,
>>
>>I want to output some formatted data (numbers) to a file.
>>Just need the same as printf does in C - i.e. control the length of mantissa,
>>put some newlines etc.
>>How to do that in maxima?
>>(print and display commands cannot do the job).
>>    
>>
>
>  
>

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<tt>in lisp, (fpformat XX)&nbsp; gets you a list of characters<br>
from a bigfloat. so you might do<br>
<br>
(coerce (fpformat XX) 'string)<br>
<br>
and then print it using ~a specification.<br>
There are also ways of controlling how many digits are printed even<br>
if there are trailing zeros, with some maxima flags.<br>
<br>
RJF<br>
<br>
<br>
</tt><br>
Alexei Meremianin wrote:<br>
<blockquote type="cite"
 cite="midigzy7ymk6bu.fsf at galilei.mpipks-dresden.mpg.de">
  <pre wrap="">Thanks to Richard Fateman for his suggestion (slightly modified here),
-----------------------------------------------------------
(%i7) :lisp (defun $my_formatted_output(a) (format t "~%~10,8f~% I am a new line~%"  a))
$MY_FORMATTED_OUTPUT
(%i7) my_formatted_output (4.4);

4.40000000
 I am a new line
(%o7) 				     false
(%i8) 
------------------------------------------------------------
Does not work with bigfloats.
How to handle that case?

Alexei Meremianin <a class="moz-txt-link-rfc2396E" href="mailto:avm at mpipks-dresden.mpg.de">&lt;avm at mpipks-dresden.mpg.de&gt;</a> writes:

  </pre>
  <blockquote type="cite">
    <pre wrap="">Hello,

I want to output some formatted data (numbers) to a file.
Just need the same as printf does in C - i.e. control the length of mantissa,
put some newlines etc.
How to do that in maxima?
(print and display commands cannot do the job).
    </pre>
  </blockquote>
  <pre wrap=""><!---->
  </pre>
</blockquote>
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