How to invert values?

Question

Algorithms

I have a variable 0.0 < x < 100.0 and there is a cycle in which x is a delay, but I want the delay to be 100 instead of 0 at x=0, respectively, at x=100 the delay should be 0.
Tell me how to do this, maybe everything is elementary and I'm just dumb, or I'm asking for something really complicated.

Answer 1

const int MAX_LATENCY = 100;
int current_latency = MAX_LATENCY - x;