• George Spelvin's avatar
    m68k: Add <asm/hash.h> · 14c44b95
    George Spelvin authored
    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.htmlSigned-off-by: default avatarGeorge 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
hash.h 2.03 KB