BUG #1577: round(dp) function does not round to nearest integer properly

The following bug has been logged online:

Bug reference:      1577
Logged by:          Roman Schayuk
Email address:      rschayuk@rogers.com
PostgreSQL version: 7.2.2
Operating system:   RedHat Linux 8.0 x86
Description:        round(dp) function does not round to nearest integer
properly
Details:

SQL command:
gap=> select round(42.5);
 round
-------
    42
(1 row)
Result has to be 43

In contrast round(numeric, int) function works properly:
gap=> select round(42.5,0);
 round
-------
    43
(1 row)