{"author_url":"https://blog.hatena.ne.jp/xuwei/","title":"Scala\u306eBigDecimal\u306eapply\u306e\u5f15\u6570\u306eDouble\u3068String\u3067\u9055\u3044\u304c\u51fa\u308b\u6761\u4ef6","published":"2026-07-11 11:10:17","blog_title":"xuwei-k's blog","type":"rich","height":"190","provider_url":"https://hatena.blog","version":"1.0","author_name":"xuwei","description":"\u524d\u63d0\u90e8\u5206\u306f\u3059\u3054\u304f\u3088\u304f\u3042\u308b\u8a71\u984c\u306a\u306e\u3067\u3001\u3042\u307e\u308a\u8a73\u7d30\u306b\u8aac\u660e\u3057\u307e\u305b\u3093\u304c\u3001\u3056\u3063\u304f\u308a\u8aac\u660e\u3057\u3066\u3044\u304f\u3068 \u4e00\u822c\u7684\u306aIEEE 754\u306b\u304a\u3044\u3066\u3001\u4f8b\u3048\u30700.1\u306a\u3069\u306f2\u9032\u6570\u3067\u6b63\u78ba\u306b\u8868\u305b\u306a\u3044\u3002(\u3053\u306e\u8a00\u3044\u65b9\u3067\u3044\u3044\u306e\u304b\u8b0e\u3060\u304c)\u5272\u308a\u5207\u308c\u306a\u3044 https://ja.wikipedia.org/wiki/IEEE_754 Java\u306edouble\u3084float\u3082IEEE 754\u306a\u306e\u3067\u3001\u5f53\u7136\u305d\u3046\u306a\u308b JVM\u3067\u52d5\u304f\u5834\u5408\u306eScala\u3082\u540c\u69d8 scala-js\u3084scala-native\u306e\u8a71\u306f\u3084\u3084\u3053\u3057\u304f\u306a\u308b\u306e\u3067\u4eca\u56de\u89e6\u308c\u306a\u3044 \u4f8b\u3048\u3070 new java.math.BigDecimal(0.1) \u3092 toString\u3059\u308b\u3068 \"0.10000000000\u2026","blog_url":"https://xuwei-k.hatenablog.com/","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fxuwei-k.hatenablog.com%2Fentry%2F2026%2F07%2F11%2F111017\" title=\"Scala\u306eBigDecimal\u306eapply\u306e\u5f15\u6570\u306eDouble\u3068String\u3067\u9055\u3044\u304c\u51fa\u308b\u6761\u4ef6 - xuwei-k&#39;s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["scala","java"],"url":"https://xuwei-k.hatenablog.com/entry/2026/07/11/111017","provider_name":"Hatena Blog","width":"100%"}