solidity/test/libsolidity/syntaxTests/literalSuffixes/parameters/integer_in_range.sol

function s8(int8 x) pure returns (uint) {}
function u8(uint8 x) pure returns (uint) {}
function s16(int16 x) pure returns (uint) {}
function u16(uint16 x) pure returns (uint) {}
function s256(int x) pure returns (uint) {}
function u256(uint x) pure returns (uint) {}

contract C {
    function min() public pure {
        0 s8;
        0 u8;
        0 s16;
        0 u16;
        0 s256;
        0 u256;
    }

    function max() public pure {
        127 s8;
        255 u8;
        32767 s16;
        65535 u16;
        57896044618658097711785492504343953926634992332820282019728792003956564819967 s256; // 2**255 - 1
        115792089237316195423570985008687907853269984665640564039457584007913129639935 u256; // 2**256 - 1
    }
}