Constant fdeflate::tables::DISTANCE_TABLE_ENTRIES

pub(crate) const DISTANCE_TABLE_ENTRIES: [u32; 32];

The distance table is a 512-entry table that maps 9 bits of distance symbols to their meaning.

00000000_00000000_00000000_00000000 symbol is more than 9 bits zzzzzzzz_zzzzzzzz_0000yyyy_0000xxxx x = input_advance_bits, y = extra_bits, z = distance_base