{"type":"rich","published":"2007-10-15 00:00:00","author_url":"https://blog.hatena.ne.jp/inamori/","image_url":null,"blog_title":"inamori\u2019s diary","url":"https://inamori.hateblo.jp/entry/20071015/p1","version":"1.0","provider_name":"Hatena Blog","description":"acos \u3092z\u3068\u304a\u304f\u3068\u3001eiZ\u306e2\u6b21\u65b9\u7a0b\u5f0f\u3068\u306a\u308a\u3001 \u3053\u308c\u3092\u89e3\u304f\u3068\u3001 \u3088\u308a\u3001 \u305f\u3060\u3057\u3001log\u304c2\u03c0\u5468\u671f\u3067\u3001\u982d\u306b\u00b1\u304c\u3064\u3044\u3066\u3044\u308b\u3002 \u4e3b\u5024\u306f\u3001C++\u3067\u306f\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u306a\u3044\uff1f C99\u3067\u306f\u3042\u308b\u3089\u3057\u3044\u3002http://docs.hp.com/ja/B2355-60104-06/cacos.3M.html\u5024\u57df\u306f\u3001\u5b9f\u90e8\u304c[0, \u03c0]\u3060\u3068\u3044\u3046\u3053\u3068\u3067\u3042\u308b\u3002 log\u306f\u865a\u90e8\u304c[-\u03c0, \u03c0]\u3060\u304b\u3089\u3001\u9069\u5f53\u306b\u7b26\u53f7\u3092\u9078\u3079\u3070\u3088\u3044\u3002 import std.cstream; import std.math;void main(char[][] args) { dout.writefln(acos(1+1i)); // 0.904557+\u2026","width":"100%","height":"190","title":"\u8907\u7d20\u6570\uff086\uff09","author_name":"inamori","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finamori.hateblo.jp%2Fentry%2F20071015%2Fp1\" title=\"\u8907\u7d20\u6570\uff086\uff09 - inamori\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["D\u8a00\u8a9e","\u6570\u5b66"],"blog_url":"https://inamori.hateblo.jp/","provider_url":"https://hatena.blog"}