reciprocal_scale9
"scale" a value into range [0, ep_ro)
Usage
u32 reciprocal_scale(u32 val, u32 ep_ro);
Arguments
val
value
ep_ro
right open interval endpoint
Overview
Perform a “reciprocal multiplication” in order to “scale” a value into range [0, ep_ro), where the upper interval endpoint is right-open. This is useful, e.g. for accessing a index of an array containing ep_ro elements, for example. Think of it as sort of modulus, only that the result isn't that of modulo. ;) Note that if initial input is a small value, then result will return 0.
Return
a result based on val in interval [0, ep_ro).