RGB to HSV Color Conversion Algorithm

$CMax$ is the largest of $R,G,$ and $B$. $CMin$ is the smallest.

$(\mod 6)$ is the remainder after dividing by $6$. (% operator in C-ish languages)

The commas look to be conditional statements. (e.g. $H = 60 ^\circ ({{G' -B' \over \Delta} \mod 6)} $ if $CMax = R'$)