[OpenSIPS-Users] negative values in math_rpn

[Liviu Chircu]

I suggest you use math_eval() - it's much more human friendly. The 
following should work:

$var(neg) = "-6.135";

$var(neg_int) = $(var(neg){s.int});

math_eval("abs($var(neg_int))", "$var(result)");

OTOH, if you really want to use RPN, this will fix it:

math_rpn("abs $var(neg_int)", "$var(result)");

Liviu Chircu
OpenSIPS Developer
http://www.opensips-solutions.com

On 10.07.2017 13:55, xaled wrote:
>
> Hi,
>
> am I doing something wrong, or can math_rpn not handle negative values?
>
> $var(neg) = "-6.135";
>
> $var(neg_int) = $(var(neg){s.int});
>
> math_rpn("$var(neg_int) abs", "$avp(result)");
>
> 2017-07-10T12:47:59.804008+02:00 fra-ivr01 
> /usr/local/sbin/opensips[10971]: DBG:mathops:w_evaluate_rpn: 
> Evaluating expression: -6 abs
>
> 2017-07-10T12:47:59.804339+02:00 fra-ivr01 
> /usr/local/sbin/opensips[10971]: WARNING:mathops:get_rpn_op: Parse 
> expr error: Invalid operator! <-6>
>
> 2017-07-10T12:47:59.804669+02:00 fra-ivr01 
> /usr/local/sbin/opensips[10971]: ERROR:mathops:evaluate_rpn: Failed to 
> parse RPN!
>
> Thanks,
>
> xaled
>
>
>
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