Constant lexical_core::format::C18_HEX_LITERAL

pub const C18_HEX_LITERAL: u128 = NumberFormatBuilder::new().case_sensitive_special(true).required_exponent_notation(true).mantissa_radix(16).exponent_base(num::NonZeroU8::new(2)).exponent_radix(num::NonZeroU8::new(10)).build(); // 13_302_989_070_119_886_811_021_914_751_482_480_652u128

Number format for a C++98 literal hexadecimal floating-point number.