@internal class Long {
  @internal fun toByte() -> Byte;
  fun toChar() throws -> Char {
    if self >= 0L && self <= 0x10FFFFL && (self < 0xD800L || self > 0xDFFFL) {
      return self.toCharUnchecked();
    } else {
      throw "invalid code point";
    }
  }
  @internal fun toCharUnchecked() -> Char;
  @internal fun toInt() -> Int;
  @internal fun toString() -> String;

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

  @internal fun asDouble() -> Double;

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

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

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

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

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

  fun hash() -> Int = self.toInt();

  @static fun max_value() -> Long {
    return 9223372036854775807L;
  }

  @static fun min_value() -> Long {
    return -9223372036854775808L;
  }

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

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