Constant lexical_core::format::HASKELL_STRING

pub const HASKELL_STRING: u128 = NumberFormatBuilder::new().required_digits(true).no_positive_mantissa_sign(true).case_sensitive_special(true).build(); // 0x0000_0a00_0000_0000_0000_0000_0000_081fu128

Number format to parse a Haskell float from string.