integer overflow

[kawe]

can anyone explain why this error is occuring when i enter a party or raid grp?

this is the tag;

-----------------------------------------------------------------------------
-- Tags
oUF.Tags.Events['curhp'] = 'UNIT_HEALTH UNIT_MAXHEALTH'
oUF.Tags.Methods['curhp'] = function(unit)
local r,g,b = gradient(UnitHealth(unit)/UnitHealthMax(unit))
return format('|cff%02x%02x%02x %s |cffFFFFFF | |r|cff%02x%02x%02x%d%%|r',
r, g, b, numberize(UnitHealth(unit)),
r, g, b, floor((UnitHealth(unit)/UnitHealthMax(unit))*1000)/10)
end
-----------------------------------------------------------------------------

Message: integer overflow attempting to store -1.#IND Time: 11/24/14 13:28:19 Count: 46 Stack: [C]: in function `format' Interface\AddOns\bUI\modules\unitframes.lua:511: in function `?' Interface\AddOns\bUI\oUF\elements\tags.lua:600: in function `UpdateTag' Interface\AddOns\bUI\oUF\elements\tags.lua:448: in function <Interface\AddOns\bUI\oUF\elements\tags.lua:444> Locals: (*temporary) = "|cff%02x%02x%02x %s | |cff%02x%02x%02x%d%%" (*temporary) = -1.#IND (*temporary) = 255 (*temporary) = 0 (*temporary) = 0 (*temporary) = -1.#IND (*temporary) = 255 (*temporary) = 0 (*temporary) = -1.#IND

[Phanx]

First of all, let's put that code in a [code] tag so it's nice to read:

oUF.Tags.Events['curhp'] = 'UNIT_HEALTH UNIT_MAXHEALTH'
oUF.Tags.Methods['curhp'] = function(unit)
   local r,g,b = gradient(UnitHealth(unit)/UnitHealthMax(unit))
   return format('|cff%02x%02x%02x %s |cffFFFFFF | |r|cff%02x%02x%02x%d%%|r', 
      r, g, b, numberize(UnitHealth(unit)), 
      r, g, b, floor((UnitHealth(unit)/UnitHealthMax(unit))*1000)/10)
end

Now, the part I highlighted in orange is what's causing your error. UnitHealthMax can return 0, and we all know dividing by 0 causes black holes.

While you're fixing that, you should also use some variables to avoid having to call UnitHealth and UnitHealthMax multiple times, since function calls are Very Slow:

oUF.Tags.Events['curhp'] = 'UNIT_HEALTH UNIT_MAXHEALTH'
oUF.Tags.Methods['curhp'] = function(unit)
   local hp, hpMax = UnitHealth(unit), UnitHealthMax(unit)
   if hpMax == 0 then return end
   local hpPercent = hp / hpMax
   local r,g,b = gradient(hpPercent)
   return format('|cff%02x%02x%02x %s |cffFFFFFF | |r|cff%02x%02x%02x%d%%|r', 
      r, g, b, numberize(hp), 
      r, g, b, floor(hpPercent * 1000) / 10
   )
end

[kawe]

thank you for clarifying