Function rstats::vecvecg::memsearchdesc

pub fn memsearchdesc<T>(s: &[T], val: T) -> Option<usize> where
    T: PartialOrd<T>, 

Binary search of an explicitly sorted list (in descending order). Returns Some(index) of any item that is neither smaller nor greater than val. When none are found, returns None. Example use: membership of an descending ordered set.