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  <author_name>shikaku</author_name>
  <author_url>https://blog.hatena.ne.jp/shikaku/</author_url>
  <blog_title>shikaku's blog</blog_title>
  <blog_url>https://blog.systemjp.net/</blog_url>
  <categories>
    <anon>C</anon>
    <anon>CPP</anon>
  </categories>
  <description>小数を整数に四捨五入する場合。 #include &lt;math.h&gt; ... double x = 5.5674; // 例 double round_x; round_x=floor(x*100+0.5)/100; ... floor()は 入力値以下の最大の整数値を計算する関数。参考 http://oshiete.nikkeibp.co.jp/qa2207594.html http://www.bohyoh.com/CandCPP/C/Library/floor.html</description>
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  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2009-07-30 00:00:00</published>
  <title>C/C++で四捨五入</title>
  <type>rich</type>
  <url>https://blog.systemjp.net/entry/20090730/p3</url>
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