boolean expectedSuccess = fitsInLong(expectedResult);
        try {
          assertEquals(a - b, LongMath.checkedSubtract(a, b));
          assertTrue(expectedSuccess);
        } catch (ArithmeticException e) {
          if (expectedSuccess) {
            failFormat(
                "expected checkedSubtract(%s, %s) = %s; got ArithmeticException",
                a, b, expectedResult);
          }
        }
      }

        BigInteger expectedResult = valueOf(a).subtract(valueOf(b));
        boolean expectedSuccess = fitsInInt(expectedResult);
        try {
          assertEquals(a - b, IntMath.checkedSubtract(a, b));
          assertTrue(expectedSuccess);
        } catch (ArithmeticException e) {
          assertFalse(expectedSuccess);
        }
      }
    }
  }

   * b}.
   *
   * @throws ArithmeticException if {@code a - b} overflows in signed {@code long} arithmetic
   */
  @InlineMe(replacement = "Math.subtractExact(a, b)")
  public static long checkedSubtract(long a, long b) {
    return Math.subtractExact(a, b);
  }

  /**
   * Returns the product of {@code a} and {@code b}, provided it does not overflow.
   *