Question

What happens when memdiff and/or totaldiff are negative? I was hoping for a negative memperc, but it doesn’t seem like that’s happening. Messing around in Python gives all sorts of confusing results when I plug in negative numbers.

local mem, percent, memdiff, totalMem, totaldiff = GetMemUsage("StarTip")
if mem then
    if totaldiff == 0 then totaldiff = 0.001 end
    memperc = (memdiff / totaldiff * 100)
    local num = memperc
    if num < 1 then num = 1 end
    if num > 100 then num = 100 end
    local r, g, b = gradient[num][1], gradient[num][2], gradient[num][3]
    return GetColorCode(format("%s (%.2f%%)", memshort(mem), memperc), r, g, b)
end

Edit: Oh come on, the question isn’t a bad question. Maybe I should have been more clear on what I’m trying to do.

I’m taking two memory values, one overall and one specific to this addon. I’m creating a difference by doing thismem - lastmem. That’s my difference. I have two of them, overall and addon specific. When Lua garbage collects, I get over 100% when I do memdiff / totaldiff * 100, when it should be negative. I don’t know why.

Edit2:

Let me give some examples.

lastmem = 95
mem = 100.
lastaddonmem = 20
addonmem = 25.

totaldiff = mem - lastmem
addondiff = addonmem - lastaddonmem

perc = addondiff / totaldiff * 100 
perc = 100

lastmem = 100
mem = 95.
lastaddonmem = 25
addonmem = 20.

totaldiff = mem - lastmem
addondiff = addonmem - lastaddonmem

perc = addondiff / totaldiff * 100 
perc = 100

I know I’m going about this the wrong way. That’s why I’m here.

Edit3: Why do you guys want to close this? I admit I’m dumb when it comes to math. Is it that people have that much intolerance for the mathematically challenged? I simply don’t get math. Numbers confuse me like no other challenge of mine. I’m not uneducated. I have a learning disability. I don’t see what the big deal is.

I ended up going with:

local mem, percent, memdiff, totalMem, totaldiff = GetMemUsage("StarTip")
if mem then
    if totaldiff == 0 then totaldiff = 0.0001 end
    local memperc
    if memdiff < 0 then
        memdiff = abs(memdiff)
        totaldiff = abs(totaldiff)
        memperc = memdiff / totaldiff * 100
        memperc = memperc * -1
    else
        memperc = memdiff / totaldiff * 100
    end
    local num = floor(memperc)
    if num < 1 then num = 1 end
    if num > 100 then num = 100 end
    local r, g, b = gradient[num][1], gradient[num][2], gradient[num][3]
    return GetColorCode(format("%s (%.2f%%)", memshort(mem), memperc), r, g, b)
end

Answer 1

if totaldiff == 0 then totaldiff = 0.001 end 

    memperc = (memdiff / totaldiff * 100)

So if memdiff > 0.001 memperc will be greater than 100

EG 1: (0.001/0.001)*100 = 100

EG 2: (0.002/0.001)*100 = 200