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lib: vsprintf: optimize division by 10000
authorGeorge Spelvin <linux@horizon.com>
Thu, 13 Sep 2012 01:01:05 +0000 (11:01 +1000)
committerStephen Rothwell <sfr@canb.auug.org.au>
Thu, 13 Sep 2012 07:28:05 +0000 (17:28 +1000)
commit8f535fe95da65e0e0c6f8305ede6a6e623d93bf5
treeeeebc969276c43ff38e9c17e77e1b06883a19f5dtree | snapshot
parent756f2a55bf93a91a67329d0d4096e694a421ba37commit | diff
lib: vsprintf: optimize division by 10000

The same multiply-by-inverse technique can be used to convert division by
10000 to a 32x32->64-bit multiply.

Signed-off-by: George Spelvin <linux@horizon.com>
Cc: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
lib/vsprintf.c diff | blob | history
Linux kernel for KaRo TX COM modules