From: Soumyadip Das Mahapatra <dip_kernel@yahoo.co.in>
To: linux-kernel@vger.kernel.org
Subject: Improved Swapping Method In sort.c
Date: Wed, 30 Apr 2008 22:39:14 +0530 (IST) [thread overview]
Message-ID: <988568.21908.qm@web94102.mail.in2.yahoo.com> (raw)
Hello everybody,
The swapping method (in function void u32_swap() line no.. 14 to 16) in lib/sort.c can be improved by using the following code
*(u32 *)b ^= *(u32 *)a ^= *(u32 *)b ^= *(u32 *)a instead of the code given. This code
is not using third variable thus not consuming another memory. And I dont see any significance in
using *int size* argument. so the function should be
static void u32_swap(void *a, void *b)
{
*(u32 *)b ^= *(u32 *)a ^= *(u32 *)b ^= *(u32 *)a;
}
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next reply other threads:[~2008-04-30 17:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-30 17:09 Soumyadip Das Mahapatra [this message]
2008-04-30 17:30 ` Jan Engelhardt
2008-04-30 17:33 ` Jan Engelhardt
2008-04-30 18:03 ` Sami Farin
2008-04-30 18:46 ` David Newall
2008-05-02 5:05 ` H. Peter Anvin
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