Non-default postgresql.conf values to log

Hello!
For example in oracle alert.log file we have:
...
System parameters with non-default values:
   processes                = 300
   nls_language             = "AMERICAN"
   nls_territory            = "RUSSIA"
   memory_target            = 720M
   control_files            = "/ora/oradata/orcl/control01.ctl"
...
My question is: is there any option(s) to log non-default
postgresql.conf values to log file?



--
Alex Ignatov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company