Howto convert floats to text?

Hi,

there are the following functions to convert types other than text to text:

$bash psql -c "\df" | sed -n '1,2 p; /^text.*convert/ p'

return_type|function          |arguments           |description   
-----------+------------------+--------------------+------------------------
----
text       |datetime_text     |datetime            |convert   
text       |int2_text         |int2                |convert   
text       |int4_text         |int4                |convert   
text       |oid_text          |oid                 |convert   
text       |text              |datetime            |convert   
text       |text              |timespan            |convert   
text       |text              |int4                |convert   
text       |text              |int2                |convert   
text       |text              |oid                 |convert   
text       |timespan_text     |timespan            |convert   


is there realy no function to convert a float to text?

--
Regards, martin@unix-ag.org