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<H3><A NAME="5_2_1">Functions and Methods</A></H3>
<P>All implementations of functions and methods must begin with a
comment header describing what the function does, the possible input
limits (if any), and the possible output values (if any), and any
special information needed, as follows:</P>
<PRE>
/*
* 'do_this()' - Compute y = this(x).
*
* Notes: none.
*/
float /* O - Inverse power value, 0.0 &lt;= y &lt;= 1.1 */
do_this(float x) /* I - Power value (0.0 &lt;= x &lt;= 1.1) */
{
...
return (y);
}
</PRE>
<P>Return/output values are indicated using an &quot;O&quot; prefix, input values
are indicated using the &quot;I&quot; prefix, and values that are both input and
output use the &quot;IO&quot; prefix for the corresponding in-line comment.</P>
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