[SOLVED] Very Long Equation is Not As Expected.

[uniflare]

Ok so i have this JASS (from Warcraft 3) Code that i have attempted to convert to PHP.

 

In the Script is an equation that is completely baffling me.

 

This Equation works as expected:

0+79*0/(61+1)+293*(61/1+0-(0/62)*62)+479 = 18352 

 

 

Unfortunately this Equation Doesn't:

479+79*479/(1+1)+293*(1/1+479-(479/62)*62)+479 = 20171.5 in PHP / and i want it to equal: 19884 (as JASS does  ???).

 

The Equation is exactly the same, same numbers/operators/brackets etc.

 

This must have soemthing to do with which operators it executes first or something im sure of it (might be wrong tho im newb at math).

 

 

 

Thanks very much for any help - i really appreciate it and this must be a tough solution. I just hope some super math guru shows me some enlightenments 

[uniflare]

OK Cannot find Edit Button, i put 1 bracket in wrong place .

 

479+79*479/(1+1)+293*(1/1+479-(479/62)*62)+479 = 20171.5

 

should be

479+79*479/(1+1)+293*1/(1+479-(479/62)*62)+479 = 20171.5

---

 

I hope i didnt throw anyone

[uniflare]

Ugh - Very Sorry for Multiple posts if mod can edit these please do. (where is the edit button!?!?!)

 

anyway i forgot to edit the top equation like the bottom... so, from the top:

 

This Equation works as expected:

0+79*0/(61+1)+293*61/(1+0-(0/62)*62)+479 = 18352 

 

 

Unfortunately this Equation Doesn't:

479+79*479/(1+1)+293*1/(1+479-(479/62)*62)+479 = 20171.5 in PHP / and i want it to equal: 19884 (as JASS does  ).

 

please help

 

Thanks in advance

[MasterACE14]

by the way the edit button is called 'Modify' and is next to 'Quote' in the top right of your post

 

ok, so your current formula's you have posted are definantly correct?

[uniflare]

Ah ARG time limit on edits. lol im very very sorry.

 

damn. i hope i havent wasted your time 

 

 

ok. This Works:

0+79*0/(0+1)+293*0/(1+0-(0/62)*62)+479 = 479

 

AND

this works:

0+79*0/(61+1)+293*(61/1+0-(0/62)*62)+479 = 3352

 

This Doesnt

479+79*479/(1+1)+293*1/(1+479-(479/62)*62)+479 = 20171.5

 

last one should be 19884

---

again really sorry for posts and getting it wrong - im really bad at math i swear im dislexic or summat

[MasterACE14]

lol, thats fine 

 

try this.

 

<?php
  $result = ((((((((479 + 79) * 479) / (1 + 1)) + 293) * 1) / (1 + 479 - (479 / 62) * 62)) + 479));
  
  if ($result == 19884) {
      echo "SUCCESS!";
  } elseif ($result == 20171.5) {
      echo "Same Again...";
  } else {
      echo "Something different??? " . $result;
  }
?>

 

let me know what you get.

 

I just hope I've put in the correct amount of parenthesis

[uniflare]

Unfortunately:

 

Something different??? 134413

 

thanks for the help so far

 

 

lol there was no parse errors

[MasterACE14]

ok. First I want you to run that same equation 5 times, and note down what the result was each time (if the results differ).

 

then let me know what you get.

 

Once you have done that. Try this:

<?php
  $result = ((((((((479 + 79) * 479) / (1 + 1)) + 293) * 1) / (1 + 479 - (479 / 62) * 62)) + 479));
  
if(is_numeric($result)) {
  if ($result == 19884) {
      echo "SUCCESS!";
  } elseif ($result == 20171.5) {
      echo "Same Again...";
  } else {
      echo "Something different??? " . $result;
   
  }
} else { echo "It is not a number!"; }
?>

 

see what we get 

 

EDIT: I just tried running this through google

((((((((479 + 79) * 479) / (1 + 1)) + 293) * 1) / (1 + 479 - (479 / 62) * 62)) + 479))

and it equaled 134 413

 

EDIT again: I just ran the exact same equation through my school calculator and it equaled 134 413 as well.

[uniflare]

lol did not think of google.

 

ok the equation was the same 15 times in a row.

Something different??? 134413

 

 

the other script is:

Something different??? 134413

[MasterACE14]

hmmmm, ok.

 

I ran this one through google as well(the one you had before we added the parenthesis)

479+79*479/(1+1)+293*1/(1+479-(479/62)*62)+479 = 20171.5

 

and google came back with 20171.5 as well. So I believe the error is within where and how the parenthesis are placed within the equation, which may be quite difficult to get right as there is so many numbers involved with hundreds of combinations to try.

 

hmmm. Any how, what is this JASS your talking about. I use to play WoW, but am more a Warcraft 3 fan as WoW has kinda ruined the series but anyway. Whats JASS ?

[uniflare]

JASS is the scripting language Warcraft 3 uses in its maps, every map has triggers (you might of heard of them), GUI triggers (in world editor) gets converted to JASS when you save the map.

 

i also ran it through google, only thing with php is i tried certain combinations, most of them didn't even change the number....strange..

 

thanks for your help so far

[MasterACE14]

ok, yeah I've used the Warcraft 3 map editor many times, god thats alot of fun 

 

All I can think of is, that the difference between how equations are run in C/C++ and PHP is what is giving the varying results.

 

try this:

<?php
  $result = ((((((((479 + 79) * 479) / (1 + 1)) + 293) * 1) / (1 + 479 - (479 / 62) * 62)) + 479));
  $result = abs($result);

if(is_numeric($result)) {
  if ($result == 19884) {
      echo "SUCCESS!";
  } elseif ($result == 20171.5) {
      echo "Same Again...";
  } else {
      echo "Something different??? " . $result;
   
  }
} else { echo "It is not a number!"; }
?>

[uniflare]

Something different??? 134413

 

 

hmmmm, im starting to think its the JASS integer limitations thats causing this.

 

See all these number are integer varibles in the JASS code, integers cannot have any decimal places. im wondering if the calculations mid-way are throwing of some of the other calculations in the process..

 

im going to test this.

[uniflare]

wow i seem to be a lot closer but not quite... notice anything wrong?

 

btw - real values (numbers with decimals) that get converted to integers are literally stripped of the decimal part. doesnt round down/up/around whatever just takes the dot and anything after it off and bins it.

 

eg: 3.7 would become 3 etc.

 

so:

 

<?php

Function R2I($num){

$nume = explode(".",$num);
return $nume[0];
}

  $result = 479 + R2I((R2I((79 * 479)) / 2)) + R2I((293 * R2I((1 / R2I((1 + 479 - R2I((R2I((479 / 62)) * 62)) )) )) )) + 479;
  $result = abs($result);

if(is_numeric($result)) {
  if ($result == 19884) {
      echo "SUCCESS!";
  } elseif ($result == 20171.5) {
      echo "Same Again...";
  } else {
      echo "Something different???  " . $result;
   
  }
} else { echo "It is not a number!"; }
?>

i now get

Something different??? 19878

....

 

Ok im going to test with Rounding Up, as these integers are not actually getting converted manually...

[uniflare]

hmm ok with round() i get 1 digit closer lol.

[MasterACE14]

lol, nice, so theres ceil(), and round(). you could do:

<?php
$result = round($result)-1;

[uniflare]

Thanks for suggestion, but i think i have narrowed the problem..

 

 

For some completely random reason JASS interprets: (479 / 62 * 62) to 434  ??? lol.

 

Guess im heading over to a JASS forum to see wth is goin on

[MasterACE14]

lol, yeah.

 

maybe a glitch Blizzard hasn't patched

[uniflare]

ok no glitch me bein stupid lol.

 

The Answer (If your interested) is here: http://www.thehelper.net/forums/showthread.php?t=96964

 

Thanks again for your help

[MasterACE14]

no problem, any time