SDL_acos.html

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  12 <a href="index.html">\96Ú\8e\9f</a> - <a href="ApiByCategory.html">API(\8b@\94\\95Ê)</a> - <a href="CategoryStandard.html">\95W\8f\80\83\89\83C\83u\83\89\83\8a</a> - SDL_acos
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  14 <h1>SDL_acos</h1>
  15 x\82Ì\83A\81[\83N\83R\83T\83C\83\93\82ð\93¾\82é
  16 <h2>\8d\\95¶</h2>
  17 <code>double SDL_acos(double x)</code>
  18 <h2>\88ø\90\94</h2>
  19 <table border="1" summary="SDL_acos">
  20 <tr><td>x</td><td>\95\82\93®\8f¬\90\94\93_\82Ì\83\89\83W\83A\83\93\82Ì\92l</td></tr>
  21 </table>
  22 <h2>\96ß\82è\92l</h2>
  23 x\82Ì\83A\81[\83N\83R\83T\83C\83\93\82ð\96ß\82·
  24 <h2>\83T\83\93\83v\83\8b\83R\81[\83h</h2>
  25 <p>
  26 <code>
  27 <pre>
  28     /* acos(x) = Pi/2 - asin(x) */
  29     SDL_Log("acos(0):\t\t%f", SDL_acos(0));
  30     SDL_Log("Pi/2 - asin(0):\t%f", M_PI / 2 - SDL_asin(0));
  31
  32     /* acos(-x) = Pi  - acos(x) */
  33     SDL_Log("acos(-(-1)):\t%f", SDL_acos(-(-1)));
  34     SDL_Log("Pi - acos(-1):\t%f", M_PI - SDL_acos(-1));
  35 </pre>
  36 </code>
  37 </p>
  38 <h2>\8fÚ\8d×</h2>
  39 y = acos(x) \82Ì\92è\8b`\82Í x = cos(y) \82Å\82 \82é.<br>
  40 (-1 &lt;= x &lt;= 1)<br>
  41 (0 &lt;= y &lt;= PI)
  42 <h2>\83o\81[\83W\83\87\83\93</h2>
  43 SDL 2.0.2\88È\8d~
  44 <h2>\8aÖ\98A\8d\80\96Ú(\8aÖ\90\94)</h2>
  45 SDL_cos<br>
  46 <h2>SDL Wiki\82Ö\82Ì\83\8a\83\93\83N</h2>
  47 <a href="https://wiki.libsdl.org/SDL_acos">SDL_acos - SDL Wiki</a>
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