lkml.org 
[lkml]   [2000]   [Oct]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Patch to remove undefined C code
Also sprach Abramo Bagnara:
}
} Isn't this more efficient?
} n = (x>>32) | (x<<32);
} n = ((n & 0x0000ffff0000ffffLL)<<16) | (n & 0xffff0000ffff0000LL)>>16;
} n = ((n & 0x00ff00ff00ff00ffLL)<<8) | (n & 0xff00ff00ff00ff00LL)>>8;
}
} 6 shift
} 4 and
} 3 or
}
Plus 3 assigns...but they may get optimized out. :)

} instead of
}
} 8 shift
} 8 and
} 7 or
}

--
|| Bill Wendling wendling@ganymede.isdn.uiuc.edu
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:41    [W:0.127 / U:3.512 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site