encoding problems and float

hi.

is there any encoding that does allow decimal placeholders in float8 to be
either , or .?
that is, it should allow both of the folling to denote for example EUR 12345 and
44 cents:

insert into table(my_float8_column) VALUES('12345.44');
insert into table(my_float8_column) VALUES('12345,44');

/stig