macOS Algo question for the math folks out there

[HannKett]

Hello,

I have a weird problem, and I can not think straight so I need some input on this one algo

I have a slider with values of 1-9, now what I want to use the floats for is that I get 1.0 - 9.0 in float values that I have rounded off so there are no 1.5 and 3.7 and so.

Now I want to reverse the 1.0 to use in multiplication as a 0.9 and 2.0 as 0.8 and so on. but I cant for some reason come up with how to do that.

Maybe I need more sleep, but it is like when you forgot a name and word but you have it on the back of your tongue..

so please help me and relief my mental pain

 

[robbieduncan]

1) The first part is easy: cast to int then back to float (assuming you are using C types rather than NSNumber)

2) It's not clear by what you mean by "reverse". It appears you mean "divide by 10 then subtract that result from 1.0".

 

[HannKett]

2) It's not clear by what you mean by "reverse". It appears you mean "divide by 10 then subtract that result from 1.0".

LOL hahah thanks man (ashamed I am)

I need stronger coffe !

 

[MorphingDragon]

Hello,

I have a weird problem, and I can not think straight so I need some input on this one algo

I have a slider with values of 1-9, now what I want to use the floats for is that I get 1.0 - 9.0 in float values that I have rounded off so there are no 1.5 and 3.7 and so.

Now I want to reverse the 1.0 to use in multiplication as a 0.9 and 2.0 as 0.8 and so on. but I cant for some reason come up with how to do that.

Maybe I need more sleep, but it is like when you forgot a name and word but you have it on the back of your tongue..

so please help me and relief my mental pain

Nevermind, robbie got it.