data = {"value": Decimal("NaN")}
    assert isnan(jsonable_encoder(data)["value"])


def test_decimal_encoder_infinity():
    data = {"value": Decimal("Infinity")}
    assert isinf(jsonable_encoder(data)["value"])
    data = {"value": Decimal("-Infinity")}
    assert isinf(jsonable_encoder(data)["value"])


def test_encode_deque_encodes_child_models():
    class Model(BaseModel):
        test: str

    checkTryParse(Double.POSITIVE_INFINITY, "Infinity");
    checkTryParse(Double.POSITIVE_INFINITY, "+Infinity");
    checkTryParse(Double.NEGATIVE_INFINITY, "-Infinity");
  }

  private static final String[] BAD_TRY_PARSE_INPUTS = {
    "",
    "+-",
    "+-0",
    " 5",
    "32 ",
    " 55 ",
    "infinity",
    "POSITIVE_INFINITY",
    "0x9A",
    "0x9A.bE-5",
    ".",

  public void add(double value) {
    if (count == 0) {
      count = 1;
      mean = value;
      min = value;
      max = value;
      if (!isFinite(value)) {
        sumOfSquaresOfDeltas = NaN;
      }
    } else {
      count++;
      if (isFinite(value) && isFinite(mean)) {
        // Art of Computer Programming vol. 2, Knuth, 4.2.2, (15) and (16)
        double delta = value - mean;
        mean += delta / count;

*p256Element) int { var acc uint64 for i := range a { acc |= a[i] ^ b[i] } return uint64IsZero(acc) } // isInfinity returns 1 if p is the point at infinity and 0 otherwise. func (p *P256Point) isInfinity() int { return p256Equal(&p.z, &p256Zero) } // Bytes returns the uncompressed or infinity encoding of p, as specified in // SEC 1, Version 2.0, Section 2.3.3. Note that the encoding of the point at // infinity is shorter than all other encodings. func (p *P256Point) Bytes() []byte { // This function is outlined...

   * necessarily implemented as, {@code !(Double.isInfinite(value) || Double.isNaN(value))}.
   *
   * <p>Prefer {@link Double#isFinite(double)} instead.
   *
   * @since 10.0
   */
  @InlineMe(replacement = "Double.isFinite(value)")
  public static boolean isFinite(double value) {
    return Double.isFinite(value);
  }

  /**
   * Returns {@code true} if {@code target} is present as an element anywhere in {@code array}. Note

*p256Element) int { var acc uint64 for i := range a { acc |= a[i] ^ b[i] } return uint64IsZero(acc) } // isInfinity returns 1 if p is the point at infinity and 0 otherwise. func (p *P256Point) isInfinity() int { return p256Equal(&p.z, &p256Zero) } // Bytes returns the uncompressed or infinity encoding of p, as specified in // SEC 1, Version 2.0, Section 2.3.3. Note that the encoding of the point at // infinity is shorter than all other encodings. func (p *P256Point) Bytes() []byte { // This function is outlined...

  // algorithm would lead to an overflow.

  static boolean fitsInInt(long x) {
    return (int) x == x;
  }

  /**
   * Returns the arithmetic mean of {@code x} and {@code y}, rounded toward negative infinity. This
   * method is resilient to overflow.
   *
   * @since 14.0
   */
  public static long mean(long x, long y) {
    // Efficient method for computing the arithmetic mean.

For floating-point arguments negative zero, NaN, and infinity the following rules apply:
</p>

<pre>
   x        y    min(x, y)    max(x, y)

  -0.0    0.0         -0.0          0.0    // negative zero is smaller than (non-negative) zero
  -Inf      y         -Inf            y    // negative infinity is smaller than any other number
  +Inf      y            y         +Inf    // positive infinity is larger than any other number

     * respect to {@code x}. The slope must not be {@code NaN}. It may be infinite, in which case
     * the transformation is vertical. (If it is zero, the transformation is horizontal.)
     */
    public LinearTransformation withSlope(double slope) {
      checkArgument(!Double.isNaN(slope));
      if (isFinite(slope)) {
        double yIntercept = y1 - x1 * slope;

   * mode}.
   *
   * <p>For the case of {@link RoundingMode#HALF_DOWN}, {@code HALF_UP}, and {@code HALF_EVEN},
   * infinite {@code double} values are considered infinitely far away. For example, 2^2000 is not
   * representable as a double, but {@code roundToDouble(BigDecimal.valueOf(2).pow(2000), HALF_UP)}