Staging
v0.5.1
https://github.com/torvalds/linux
Revision 14c44b95b3dcb8ff1d627e6b78f57c4373d375cb authored by George Spelvin on 26 May 2016, 15:36:19 UTC, committed by George Spelvin on 28 May 2016, 19:48:57 UTC
This provides a multiply by constant GOLDEN_RATIO_32 = 0x61C88647
for the original mc68000, which lacks a 32x32-bit multiply instruction.

Yes, the amount of optimization effort put in is excessive. :-)

Shift-add chain found by Yevgen Voronenko's Hcub algorithm at
http://spiral.ece.cmu.edu/mcm/gen.html

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Philippe De Muyter <phdm@macq.eu>
Cc: linux-m68k@lists.linux-m68k.org
1 parent 468a942
History
Tip revision: 14c44b95b3dcb8ff1d627e6b78f57c4373d375cb authored by George Spelvin on 26 May 2016, 15:36:19 UTC
m68k: Add <asm/hash.h>
Tip revision: 14c44b9
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