more than 32 parameters to a function?

I'm writing some stored procedures in pl/pgsql for a database using
postgresql 7.4.7.

I need to write a complex function with 65 arguments, but when I try to
run it I get an error complaining that arguments can be up to 32.

Is there a way to solve this problem or do I have to try to split the
function into three new ones?

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Non c'e' piu' forza nella normalita', c'e' solo monotonia.