[src/trunk]: src/sys/external/bsd/drm2/include/linux Add hweight8 (hamming we...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f686087a6374
branches:  trunk
changeset: 336322:f686087a6374
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Wed Feb 25 15:40:20 2015 +0000

description:
Add hweight8 (hamming weight of 8-bit quantity).

diffstat:

 sys/external/bsd/drm2/include/linux/bitops.h |  9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diffs (21 lines):

diff -r d83da36b4f3b -r f686087a6374 sys/external/bsd/drm2/include/linux/bitops.h
--- a/sys/external/bsd/drm2/include/linux/bitops.h      Wed Feb 25 15:11:07 2015 +0000
+++ b/sys/external/bsd/drm2/include/linux/bitops.h      Wed Feb 25 15:40:20 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bitops.h,v 1.8 2014/08/23 08:03:33 riastradh Exp $     */
+/*     $NetBSD: bitops.h,v 1.9 2015/02/25 15:40:20 riastradh Exp $     */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -167,4 +167,11 @@
        return result;
 }
 
+static inline unsigned
+hweight8(unsigned w)
+{
+
+       return popcount(w & 0xff);
+}
+
 #endif  /* _LINUX_BITOPS_H_ */