View source for CoCoA:ILogBase

  <command>
    <title>ILogBase</title>
    <short_description>integer part of the logarithm</short_description>

    <description>
This function computes the integer part (floor) of the logarithm of a
rational number in a given base.  The signs of X and Base are ignored.

<example>
  ILogBase(128,2);
7
-------------------------------
  ILogBase(81.5,3);
4
-------------------------------
</example>
    </description>

    <syntax>
ILogBase(X:RAT, Base:INT):INT
</syntax>

    <type>integer</type>
    <type>rat</type>

    <key>ilogbase</key>
  </command>