pub fn buff_uptime_mult(p: f64, quantity: i64, duration: f64) -> f64Expand description
Multiplicative buff/debuff factor from a proc chance p (0..1): a buff of
strength BUFF_EFF held for a mean uptime, stacked quantity times.
Shared by bravery (offensive) and deceit (defensive); preserves the legacy
(1 + (BUFF_EFF−1)·uptime)^quantity shape exactly.