return Double.valueOf(input);
    } catch (NumberFormatException e) {
      return null;
    }
  }

  @GwtIncompatible // Doubles.tryParse
  private static void checkTryParse(String input) {
    Double expected = referenceTryParse(input);
    assertThat(Doubles.tryParse(input)).isEqualTo(expected);
    if (expected != null && !Doubles.FLOATING_POINT_PATTERN.matcher(input).matches()) {

    tryParseAndAssertEquals(LEAST, Integer.toString(LEAST));
    assertThat(Ints.tryParse("")).isNull();
    assertThat(Ints.tryParse("-")).isNull();
    assertThat(Ints.tryParse("+1")).isNull();
    assertThat(Ints.tryParse("9999999999999999")).isNull();
    assertWithMessage("Max integer + 1")
        .that(Ints.tryParse(Long.toString(((long) GREATEST) + 1)))
        .isNull();
    assertWithMessage("Max integer * 10")

    tryParseAndAssertEquals(MIN_VALUE, Long.toString(MIN_VALUE));
    assertThat(Longs.tryParse("")).isNull();
    assertThat(Longs.tryParse("-")).isNull();
    assertThat(Longs.tryParse("+1")).isNull();
    assertThat(Longs.tryParse("999999999999999999999999")).isNull();
    assertWithMessage("Max long + 1")
        .that(Longs.tryParse(BigInteger.valueOf(MAX_VALUE).add(BigInteger.ONE).toString()))
        .isNull();

      return null;
    }
  }

  @GwtIncompatible // Floats.tryParse
  private static void checkTryParse(String input) {
    assertThat(Floats.tryParse(input)).isEqualTo(referenceTryParse(input));
  }

  @GwtIncompatible // Floats.tryParse
  private static void checkTryParse(float expected, String input) {
    assertThat(Floats.tryParse(input)).isEqualTo(Float.valueOf(expected));
  }

      return Double.valueOf(input);
    } catch (NumberFormatException e) {
      return null;
    }
  }

  @GwtIncompatible // Doubles.tryParse
  private static void checkTryParse(String input) {
    Double expected = referenceTryParse(input);
    assertThat(Doubles.tryParse(input)).isEqualTo(expected);
    if (expected != null && !Doubles.FLOATING_POINT_PATTERN.matcher(input).matches()) {

      return null;
    }
  }

  @GwtIncompatible // Floats.tryParse
  private static void checkTryParse(String input) {
    assertThat(Floats.tryParse(input)).isEqualTo(referenceTryParse(input));
  }

  @GwtIncompatible // Floats.tryParse
  private static void checkTryParse(float expected, String input) {
    assertThat(Floats.tryParse(input)).isEqualTo(Float.valueOf(expected));
  }

   *     a length of zero or cannot be parsed as an integer value
   * @throws NullPointerException if {@code string} is {@code null}
   * @since 11.0
   */
  @CheckForNull
  public static Integer tryParse(String string) {
    return tryParse(string, 10);
  }

  /**
   * Parses the specified string as a signed integer value using the specified radix. The ASCII

  @GwtIncompatible // lazyStackTraceIsLazy()
  public void testLazyStackTraceWorksInProd() {
    // TODO(b/64442212): Remove this guard once lazyStackTrace() works in Java 9+.
    Integer javaVersion = Ints.tryParse(JAVA_SPECIFICATION_VERSION.value());
    if (javaVersion != null && javaVersion >= 9) {
      return;
    }
    // Obviously this isn't guaranteed in every environment, but it works well enough for now:

   *     length of zero or cannot be parsed as a long value
   * @throws NullPointerException if {@code string} is {@code null}
   * @since 14.0
   */
  @CheckForNull
  public static Long tryParse(String string) {
    return tryParse(string, 10);
  }

  /**
   * Parses the specified string as a signed long value using the specified radix. The ASCII

   *     length of zero or cannot be parsed as a long value
   * @throws NullPointerException if {@code string} is {@code null}
   * @since 14.0
   */
  @CheckForNull
  public static Long tryParse(String string) {
    return tryParse(string, 10);
  }

  /**
   * Parses the specified string as a signed long value using the specified radix. The ASCII