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(at)unix-ag(dot)org