How to read RPN and convert to C++ code lines

[roarkr]

I need to send this RPN code as standard C++ code lines in my WASM as there is no SimConnect Event for it.

I have difficulties of reading and understand these lines in order to convert to C++ code

 

[gaabne]

Use Infix2Postfix program from SDK, option PostFix to Infix. Should translate it in almost "readable" format.

Gérard

 

[roarkr]

Thanks for guiding me to Infix2Postfix.

This is what I get after the conversion, but the lines in bold below I still do not understand



if (L:A32NX_AUTOPILOT_APPR_MODE , Bool)
{ (K:AP_APR_HOLD_ON) = result ;
(K:AP_APR_HOLD_OFF) = result ;
}
if ( ( ! (A:AUTOPILOT DISENGAGED , Bool) ) and 1 )
{
if ( 1 != 2 )
{
(L:XMLVAR_Autopilot_1_Status) = 0 ;
}
if ( 2 != 2 )
{
(L:XMLVAR_Autopilot_2_Status) = 0 ;

}
(L:XMLVAR_Autopilot_2_Status) = ( ! (L:XMLVAR_Autopilot_2_Status) ) ;

if ( ( (L:XMLVAR_Autopilot_1_Status) or (L:XMLVAR_Autopilot_2_Status) ) != (A:AUTOPILOT MASTER , Bool) )
{
(K:AP_MASTER) = result ;

if ( ! (A:AUTOPILOT MASTER , Bool) )
{
(L:XMLVAR_Autopilot_2_Status) = 0 ;
}
}
}

 

[ronh]

maybe like this

{
    // put not (L:XMLVAR_Autopilot_2_Status) into (L:XMLVAR_Autopilot_2_Status)
    (L:XMLVAR_Autopilot_2_Status) = ( ! (L:XMLVAR_Autopilot_2_Status) ) ;

    if ( ( (L:XMLVAR_Autopilot_1_Status) or (L:XMLVAR_Autopilot_2_Status) ) != (A:AUTOPILOT MASTER , Bool) )
    {
        (K:AP_MASTER) = result ;
        if ( ! (A:AUTOPILOT MASTER , Bool) )
        {
            (L:XMLVAR_Autopilot_2_Status) = 0 ;
        }
    }
}

 

[B21-soaring]

Your original XML code was "computer generated" so it has a few quirks (even though it is probably correct) and the rpn -> infix has faithfully converted those quirks. I.e.

1 2 != if{ .... }

becomes

if (1 != 2) { ... }

and (1 != 2) is ALWAYS true so it's

if (true) { ... }

i.e.

...

Similarly a condition ( XXX and 1 ) is simply (XXX).