argument number

From: 帅猛 <shuaimeng(at)db(dot)pku(dot)edu(dot)cn>
To: pgsql-general(at)postgresql(dot)org <pgsql-general(at)postgresql(dot)org>
Subject: argument number
Date: 2002-12-19 08:03:23
Message-ID: 200212191551921.SM01100@shm
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i create a function with c , how can i get the function's number of arguments in the function?
　　　　　　　　shuaimeng(at)db(dot)pku(dot)edu(dot)cn
　　　　　　　　　　2002-12-19

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