Well, I'm worried about the bugs in expr and that they get fixed actually, there are more bugs I found by the way. Now Shahrokh doesn't seem to be working on it and making updates anymore. I remember I complained about something in 2009 to him and it never got fixed. I could list them all as well, but I won't make a bug report if it can't be fixed...

So, what could we do? Could we just fix it and update it? Or does he have to do it?

I remember some issues regarding its license as well, but never really understood them, maybe the license issue prevents people from updating it?

cheers

2015-06-07 17:51 GMT-03:00 Jan Baumgart <raga.raga@gmx.de>:

You can substitute the copysign function with this ugly thing:

[expr $f1*if($f2==0, 1, $f2/abs($f2))]

cheers,
jan

On 06/07/2015 10:39 PM, Jan Baumgart wrote:

It's spelled "copysig" in expr.
But I couldn't get it to work.

copysig in expr only takes one argument, whereas the c math function
takes two arguments:
float copysignf(float x, float y);

It returns the absolute value of x with the sign of y.

Smells like a bug to me...

cheers,
Jan

On 06/07/2015 09:57 PM, Alexandre Torres Porres wrote:

hi there, I was checking the source of expr (find it attached) and saw
this "copysign" function that I needed for a formula, but I can't get it
to work/load.

I'm trying something like [expr copysign($f1)] and it's not happening.
The expr manual page in http://yadegari.org/expr/expr.html tells about
this function as well, here it is:

copysign()
1
copy sign of a number(added in version 0.4)

So it seems I'm supposedly doing the right thing... is it a bug? I'm on
extended 0.42 and it says that it's expr version 0.4 when it loads.

cheers

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Jan Baumgart
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