funcparams

funcparams — Parameters for a function referenced through a function pointer in a synopsis.

Synopsis

funcparams ::= [-]

Description

In some programming languages (such as C), it is possible for a function to have a pointer to another function as one of its parameters. In the syntax summary for such a function, the funcparams element provides a wrapper for the function pointer.

For example, the following prototype describes the function sort, which takes two parameters. The first parameter, arr, is an array of integers. The second parameter is a pointer to a function, comp, that returns an int. The comp function takes two parameters, both of type int *:

<funcprototype>
  <funcdef>void <function>sort</function></funcdef>
    <paramdef>int *<parameter>arr</parameter>[]</paramdef>
    <paramdef>int <parameter>(* comp)</parameter>
      <funcparams>int *, int *</funcparams></paramdef>
</funcprototype>

Processing expectations

Formatted inline. For a complete description of the processing expectations, see funcsynopsis.

Parents

These elements contain funcparams: methodparam, paramdef.

Children

The following elements occur in funcparams: text, abbrev, acronym, alt, anchor, annotation, biblioref, coref, date, emphasis (db._emphasis), firstterm (db._firstterm), footnote, footnoteref, foreignphrase (db._foreignphrase), glossterm (db._glossterm), indexterm (db.indexterm.endofrange), indexterm (db.indexterm.singular), indexterm (db.indexterm.startofrange), inlinemediaobject, link, olink, phrase (db._phrase), quote (db._quote), remark, replaceable, subscript, superscript, trademark, wordasword, xref.

Examples

<article xmlns='http://docbook.org/ns/docbook'>
<title>Example funcparams</title>

<funcsynopsis>
<funcprototype>
  <funcdef>void <function>qsort</function></funcdef>
    <paramdef>void *<parameter>dataptr</parameter>[]</paramdef>
    <paramdef>int <parameter>left</parameter></paramdef>
    <paramdef>int <parameter>right</parameter></paramdef>
    <paramdef>int (*<parameter>comp</parameter>)
      <funcparams>void *, void *</funcparams></paramdef>
</funcprototype>
</funcsynopsis>

</article>
void qsort(dataptr,  
 left,  
 right,  
 comp); 
void * dataptr[];
int  left;
int  right;
int (*comp) (void *, void *);
Last revised by Norman Walsh on (git hash: 4a070f84c9fc7bc85cf9f71d71fa54f4db18f973 a835fdf61c7f87ce1038e2869080d80ea67d3696)