From a109a0bb50ad47812b8818e9c98e4f311672d659 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Thu, 1 Dec 2022 12:26:12 -0500
Subject: [PATCH] Doc: add example of round(v, s) with negative s.

This has always worked, but you'd be unlikely to guess it
from the documentation.  Add an example showing it.

Lack of docs noted by David Johnston.  Back-patch to v13;
the documentation layout we used before that was not very
amenable to squeezing in multiple examples.

Discussion: https://postgr.es/m/CAKFQuwZ4Vy1Xty0G5Ok+ot=NDrU3C6hzF1JwUk-FEkwe3V9_RA@mail.gmail.com
---
 doc/src/sgml/func.sgml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 22204f16c2..2052d3c844 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -1598,6 +1598,10 @@ repeat('Pg', 4) <returnvalue>PgPgPgPg</returnvalue>
        <para>
         <literal>round(42.4382, 2)</literal>
         <returnvalue>42.44</returnvalue>
+       </para>
+       <para>
+        <literal>round(1234.56, -1)</literal>
+        <returnvalue>1230</returnvalue>
        </para></entry>
       </row>