Constant lexical_write_float::format::C90_HEX_STRING

pub const C90_HEX_STRING: u128 = NumberFormatBuilder::new().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_462_220u128

Number format for a C90 string hexadecimal floating-point number.