<!--

$Header: /cvsroot/pgsql/doc/src/sgml/datatype.sgml,v 1.100 2002/08/22 00:01:40 tgl Exp $

$Header: /cvsroot/pgsql/doc/src/sgml/datatype.sgml,v 1.101 2002/08/2301:28:17 tgl Exp $

-->

<chapter id="datatype">

<row>

<entry><type>cstring</></entry>

<entry>Indicates a functiontakes or returns a null-terminated C string</entry>

<entry>Indicatesthata functionaccepts or returns a null-terminated C string</entry>

</row>

<row>

<para>

Functions coded in C (whether built-in or dynamically loaded) may be

declared totake or return any of these pseudo datatypes. It is up to

declared toaccept or return any of these pseudo datatypes. It is up to

the function author to ensure that the function will behave safely

when a pseudo-type is used as an argument type.

</para>