Constant lexical_util::format::OCTAVE_LITERAL

pub const OCTAVE_LITERAL: u128 = NumberFormatBuilder::new()
    .digit_separator(num::NonZeroU8::new(b'_'))
    .case_sensitive_special(true)
    .internal_digit_separator(true)
    .fraction_leading_digit_separator(true)
    .trailing_digit_separator(true)
    .consecutive_digit_separator(true)
    .build(); // 0x0000_0a00_0000_005f_0000_0fd7_0000_080cu128

Number format for an Octave literal floating-point number.