Constant lexical_write_integer::format::OCAML_STRING

pub const OCAML_STRING: u128 = NumberFormatBuilder::new().digit_separator(num::NonZeroU8::new(b'_')).internal_digit_separator(true).leading_digit_separator(true).trailing_digit_separator(true).consecutive_digit_separator(true).special_digit_separator(true).build(); // 202_824_096_038_269_144_961_654_997_385_228u128

Number format to parse an OCaml float from string.