Re: Problem with precision

[Marco atzeri]

On 6/16/2011 4:34 PM, Fritz Fischer wrote:
> Hello!
>
> I have a problem with Octave's precision and hope that you can help me.
>
> My function writes data to a file, usually using a normal precision. But
> some
> values are written with a very high precision and in the exponential format:
>
> 44.875
> 40.262
> 35.327
> 30.005
> 20.981
> 6.9638e-28
> 0
> 0
>
> Can someone tell me how to fix this? I tried format short and format long
> but the output is the same at both settings.
>
> Since the files are used as input for another program that does not
> understand the exponential format I need to change this.
>
> Kind regards,
> Walter

see

"14.2.4 Formatted Output"

— Built-in Function: fprintf (fid, template, ...)

    This function is just like printf, except that the output is 
written to the stream fid instead of stdout. If fid is omitted, the 
output is written to stdout.

"14.2.7 Table of Output Conversions"

‘%f’
    Print a floating-point number in normal (fixed-point) notation

Regards
Marco