[rrd-users] Re: Plot a dotted line

Alex van den Bogaerdt alex at ergens.op.het.net
Tue Nov 22 16:19:51 MET 2005

On Tue, Nov 22, 2005 at 04:03:51PM +0100, Simone Morandini wrote:

> >"TIME,3600,one,*,/,2,%" should result in either 0 or 1.
> >
> As you say, it should, but it doesn't: I tryed

           case OP_MOD:
                rpnstack -> s[stptr-1]= fmod(   rpnstack -> s[stptr-1]
                                                ,rpnstack -> s[stptr]);

man fmod:
       The  fmod()  function computes the remainder of dividing x by y.
       The return value is x - n * y, where n is the quotient of x / y,
       rounded towards zero to an integer.

So indeed you end up with a float.  Sorry for the confusion.  This seems to
be intended behaviour.  Only "y" is rounded to an integer, not the result.

> So, comparing this result with a number between 0 and 2 determines the
> length of the segments in the line.

Which is probably a nice feature in itself :)

Alex van den Bogaerdt

Unsubscribe mailto:rrd-users-request at list.ee.ethz.ch?subject=unsubscribe
Help        mailto:rrd-users-request at list.ee.ethz.ch?subject=help
Archive     http://lists.ee.ethz.ch/rrd-users
WebAdmin    http://lists.ee.ethz.ch/lsg2.cgi

More information about the rrd-users mailing list