Constant lexical_write_float::format::RUBY_OCTAL_LITERAL

pub const RUBY_OCTAL_LITERAL: u128 = NumberFormatBuilder::new().digit_separator(num::NonZeroU8::new(b'_')).mantissa_radix(8).required_digits(true).no_special(true).internal_digit_separator(true).build(); // 0x0000_0800_0000_005f_0000_0007_0000_040fu128

Number format for a Ruby literal floating-point number.