From mboxrd@z Thu Jan  1 00:00:00 1970
From: "jywang" <jywang@cnic.cn>
Subject: what is the char ~ mean
Date: Tue, 8 Nov 2005 10:54:36 +0800
Message-ID: <003801c5e40f$c11cce20$060ae29f@javaboy>
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in linux source code, i find this line,
~tcp_v4_check(...).

what is the character ~ mean.