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lib: vsprintf: optimize division by 10000
authorGeorge Spelvin <linux@horizon.com>
Wed, 26 Sep 2012 01:34:17 +0000 (11:34 +1000)
committerStephen Rothwell <sfr@canb.auug.org.au>
Wed, 26 Sep 2012 05:45:18 +0000 (15:45 +1000)
commit9e1ba7ef983ecdc037b92e52208016962810943e
treed8699cbf7622b174af1bb90a7f147ad7f2f324e8tree | snapshot
parent2a0156750df9b40438a665d75eed05ad9c28a9aecommit | 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