Constant lexical_parse_integer::format::NO_EXPONENT_WITHOUT_FRACTION

pub const NO_EXPONENT_WITHOUT_FRACTION: u128 = 1 << 9; // 0x0000_0000_0000_0000_0000_0000_0000_0200u128

Exponent without a fraction component is not allowed.

This only checks if a decimal point precedes the exponent character. To require fraction digits or exponent digits with this check, please use the appropriate flags.