@internal class Int {
  @internal fun toByte() -> Byte;
  fun toChar() throws -> Char {
    if self >= 0 && self <= 0x10FFFF && (self < 0xD800 || self > 0xDFFF) {
      return self.toCharUnchecked();
    } else {
      throw "invalid code point";
    }
  }
  @internal fun toCharUnchecked() -> Char;
  @internal fun toLong() -> Long;
  @internal fun toString() -> String;

  @internal fun toFloat() -> Float;
  @internal fun toDouble() -> Double;

  @internal fun asFloat() -> Float;

  @internal fun equals(rhs: Int) -> Bool;
  @internal fun compareTo(rhs: Int) -> Int;

  @internal fun plus(rhs: Int) -> Int;
  @internal fun minus(rhs: Int) -> Int;
  @internal fun times(rhs: Int) -> Int;
  @internal fun div(rhs: Int) -> Int;
  @internal fun mod(rhs: Int) -> Int;

  @internal fun bitwiseOr(rhs: Int) -> Int;
  @internal fun bitwiseAnd(rhs: Int) -> Int;
  @internal fun bitwiseXor(rhs: Int) -> Int;

  @internal fun shiftLeft(rhs: Int) -> Int;
  @internal fun shiftRight(rhs: Int) -> Int;
  @internal fun unsignedShiftRight(rhs: Int) -> Int;

  @internal fun unaryPlus() -> Int;
  @internal fun unaryMinus() -> Int;
  @internal fun not() -> Int;

  fun hash() -> Int = self;

  fun abs() -> Int {
    if self >= 0 {
      return self;
    } else {
      return -self;
    }
  }

  @static fun min(lhs: Int, rhs: Int) -> Int {
    if lhs < rhs {
      return lhs;
    } else {
      return rhs;
    }
  }

  @static fun max(lhs: Int, rhs: Int) -> Int {
    if lhs < rhs {
      return rhs;
    } else {
      return lhs;
    }
  }

  @static fun max_value() -> Int {
    return 2147483647;
  }

  @static fun min_value() -> Int {
    return -2147483648;
  }
}