* in which case the signal is a no-op, and the bigger-picture signal is lost unless interrupted
   * threads take special action by participating in the signal-passing game.
   */

  /*
   * Timeout handling is intricate, especially given our ambitious goals:
   * - Avoid underflow and overflow of timeout values when specified timeouts are close to

      long unused = simpleBinomial(LongMath.biggestSimpleBinomials[k], k); // mustn't throw
      if (LongMath.biggestSimpleBinomials[k] < Integer.MAX_VALUE) {
        // unless all n are fair game with this k
        try {
          simpleBinomial(LongMath.biggestSimpleBinomials[k] + 1, k);
          fail("Expected ArithmeticException");
        } catch (ArithmeticException expected) {
        }
      }

      long unused = simpleBinomial(LongMath.biggestSimpleBinomials[k], k); // mustn't throw
      if (LongMath.biggestSimpleBinomials[k] < Integer.MAX_VALUE) {
        // unless all n are fair game with this k
        try {
          simpleBinomial(LongMath.biggestSimpleBinomials[k] + 1, k);
          fail("Expected ArithmeticException");
        } catch (ArithmeticException expected) {
        }
      }

    doTestNoMatches(anyOf("CharMatcher"), "zxqy");
    doTestNoMatches(noneOf("CharMatcher"), "ChMa");
    doTestNoMatches(inRange('p', 'x'), "mom");
    doTestNoMatches(forPredicate(Predicates.equalTo('c')), "abe");
    doTestNoMatches(inRange('A', 'Z').and(inRange('F', 'K').negate()), "F1a");
    doTestNoMatches(CharMatcher.digit(), "\tAz()");
    doTestNoMatches(CharMatcher.javaDigit(), "\tAz()");

    doTestNoMatches(anyOf("CharMatcher"), "zxqy");
    doTestNoMatches(noneOf("CharMatcher"), "ChMa");
    doTestNoMatches(inRange('p', 'x'), "mom");
    doTestNoMatches(forPredicate(Predicates.equalTo('c')), "abe");
    doTestNoMatches(inRange('A', 'Z').and(inRange('F', 'K').negate()), "F1a");
    doTestNoMatches(CharMatcher.digit(), "\tAz()");
    doTestNoMatches(CharMatcher.javaDigit(), "\tAz()");