## 数値の検証: 浮動小数点、 大なり小なり { #number-validations-floats-greater-than-and-less-than }

数値のバリデーションは`float`の値に対しても有効です。

ここで重要になってくるのは<abbr title="greater than – より大きい"><code>gt</code></abbr>だけでなく<abbr title="greater than or equal – 以上"><code>ge</code></abbr>も宣言できることです。これと同様に、例えば、値が`1`より小さくても`0`より大きくなければならないことを要求することができます。

したがって、`0.5`は有効な値ですが、`0.0`や`0`はそうではありません。

    @Override
    public Model read(Reader reader, boolean strict, InputSource source) throws IOException, XmlPullParserException {
        return super.read(reader, strict, source);
    }

    @Override
    public Model read(Reader reader, boolean strict) throws IOException, XmlPullParserException {
        return super.read(reader, strict);
    }

    @Override

          return (result < 0) ? LESS : (result > 0) ? GREATER : ACTIVE;
        }

        @Override
        public int result() {
          return 0;
        }
      };

  private static final ComparisonChain LESS = new InactiveComparisonChain(-1);

  private static final ComparisonChain GREATER = new InactiveComparisonChain(1);

   *
   * @param reader input source
   * @param charset character set used for encoding chars to bytes
   * @param bufferSize size of internal input and output buffers
   * @throws IllegalArgumentException if bufferSize is non-positive
   */
  ReaderInputStream(Reader reader, Charset charset, int bufferSize) {
    this(
        reader,
        charset
            .newEncoder()

    }

    /**
     * Wraps the reader with a {@link BufferedReader} if necessary.
     *
     * @param reader the reader
     * @return the wrapped reader
     */
    protected static Reader wrap(final Reader reader) {
        if (reader instanceof BufferedReader) {
            return reader;
        }
        if (reader instanceof StringReader) {
            return reader;
        }

class Item(BaseModel):
    name: str
    description: str | None = Field(
        default=None, title="The description of the item", max_length=300
    )
    price: float = Field(gt=0, description="The price must be greater than zero")
    tax: float | None = None


@app.put("/items/{item_id}")
async def update_item(item_id: int, item: Item = Body(embed=True)):
    results = {"item_id": item_id, "item": item}

   *
   * @param value any value in the range of the {@code byte} type
   * @return the {@code byte} value that equals {@code value}
   * @throws IllegalArgumentException if {@code value} is greater than {@link Byte#MAX_VALUE} or
   *     less than {@link Byte#MIN_VALUE}
   */
  public static byte checkedCast(long value) {
    byte result = (byte) value;
    checkArgument(result == value, "Out of range: %s", value);

    }

    /**
     * Method read.
     *
     * @param reader a reader object.
     * @param strict a strict object.
     * @return Metadata
     * @throws IOException            IOException if any.
     * @throws XmlPullParserException XmlPullParserException if
     *                                any.
     */
    public Metadata read(Reader reader, boolean strict) throws IOException, XmlPullParserException {
        try {

          return (result < 0) ? LESS : (result > 0) ? GREATER : ACTIVE;
        }

        @Override
        public int result() {
          return 0;
        }
      };

  private static final ComparisonChain LESS = new InactiveComparisonChain(-1);

  private static final ComparisonChain GREATER = new InactiveComparisonChain(1);

		}

		srcInfo.Reader, err = hash.NewReader(ctx, reader, wantSize, "", "", actualPartSize)
		if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}
		pReader, err = pReader.WithEncryption(srcInfo.Reader, &objectEncryptionKey)
		if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}
		if dstOpts.IndexCB != nil {