help/C/functions.page

   1 <page xmlns="http://projectmallard.org/1.0/"
   2       type="guide"
   3       id="function">
   4
   5     <info>
   6         <link type="guide" xref="index#equation"/>
   7     </info>
   8
   9         <title>Functions</title>
  10
  11     <p>
  12     Functions can be used by inserting the name of the function followed by the function argument.
  13     If the argument is not a number or <link xref="variable">variable</link> then use parenthesis around the argument.
  14     </p>
  15     <example>
  16     <p>
  17     sin 30
  18     </p>
  19     <p>
  20     abs (5−9)
  21     </p>
  22     </example>
  23     <p>
  24     The following functions are defined.
  25     </p>
  26     <table>
  27     <tr>
  28     <td><p>abs</p></td>
  29     <td><p><link xref="absolute">Absolute Value</link></p></td>
  30     </tr>
  31     <tr>
  32     <td><p>cos</p></td>
  33     <td><p><link xref="trigonometry">Cosine</link></p></td>
  34     </tr>
  35     <tr>
  36     <td><p>cosh</p></td>
  37     <td><p><link xref="trigonometry">Hyperbolic Cosine</link></p></td>
  38     </tr>
  39     <tr>
  40     <td><p>frac</p></td>
  41     <td><p>Fractional Component</p></td>
  42     </tr>
  43     <tr>
  44     <td><p>int</p></td>
  45     <td><p>Integer Component</p></td>
  46     </tr>
  47     <tr>
  48     <td><p>ln</p></td>
  49     <td><p><link xref="logarithm">Natural Logarithm</link></p></td>
  50     </tr>
  51     <tr>
  52     <td><p>log</p></td>
  53     <td><p><link xref="logarithm">Logarithm</link></p></td>
  54     </tr>
  55     <tr>
  56     <td><p>not</p></td>
  57     <td><p><link xref="boolean">Boolean NOT</link></p></td>
  58     </tr>
  59     <tr>
  60     <td><p>ones</p></td>
  61     <td><p>Ones complement</p></td>
  62     </tr>
  63     <tr>
  64     <td><p>sin</p></td>
  65     <td><p><link xref="trigonometry">Sine</link></p></td>
  66     </tr>
  67     <tr>
  68     <td><p>sinh</p></td>
  69     <td><p><link xref="trigonometry">Hyperbolic Sine</link></p></td>
  70     </tr>
  71     <tr>
  72     <td><p>sqrt</p></td>
  73     <td><p><link xref="power">Square Root</link></p></td>
  74     </tr>
  75     <tr>
  76     <td><p>tan</p></td>
  77     <td><p><link xref="trigonometry">Tangent</link></p></td>
  78     </tr>
  79     <tr>
  80     <td><p>tanh</p></td>
  81     <td><p><link xref="trigonometry">Hyperbolic Tangent</link></p></td>
  82     </tr>
  83     <tr>
  84     <td><p>twos</p></td>
  85     <td><p>Twos complement</p></td>
  86     </tr>
  87     </table>
  88     <p>
  89     <app>GCalctool</app> does not support user-defined functions.
  90     </p>
  91 </page>