Star Wars D20 Revised macro error

So I have noticed something in the attack macro for weapons on the sheet, and it gave me a huge WTF.  One of my players had this as their roll.6+6+floor(10/2-5)  Now that is a VERY odd attack roll and we cannot figure it out, can anyone please explain what is going on and what happened?  I need to fix it, but I don't know if it is a macro malfunction or just coding error on sheet.  It rolled his crit as a 32 not 26 which it should have.

Nevermind, fixed it.  Player put the wrong number in the wrong spot.  BUT what does +floor(10/2-5) mean?

it means floor(x) &nbsp;rounds x towards negative infinity. Found here&nbsp; <a href="https://roll20.zendesk.com/hc/en-us/articles/360037773133-Dice-Reference#DiceReference-MathOperatorsandFunctions" rel="nofollow">https://roll20.zendesk.com/hc/en-us/articles/360037773133-Dice-Reference#DiceReference-MathOperatorsandFunctions</a> &nbsp;