From: Robert Morell <rmorell@nvidia.com>
Date: Wed, 25 Apr 2012 09:45:01 +0000 (+0200)
Subject: drm: fixed: Add dfixed_frac
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=f7f6c340f9d8f11bee50aef647b8578348957936;p=~shefty%2Frdma-dev.git

drm: fixed: Add dfixed_frac

This helper macro retrieves the fractional part of a fixed20_12 20.12
fixed-point number.

Signed-off-by: Robert Morell <rmorell@nvidia.com>
Signed-off-by: Olof Johansson <olofj@chromium.org>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/include/drm/drm_fixed.h b/include/drm/drm_fixed.h
index 4a08a664ff1..0ead502e17d 100644
--- a/include/drm/drm_fixed.h
+++ b/include/drm/drm_fixed.h
@@ -37,6 +37,7 @@ typedef union dfixed {
 #define dfixed_init(A) { .full = dfixed_const((A)) }
 #define dfixed_init_half(A) { .full = dfixed_const_half((A)) }
 #define dfixed_trunc(A) ((A).full >> 12)
+#define dfixed_frac(A) ((A).full & ((1 << 12) - 1))
 
 static inline u32 dfixed_floor(fixed20_12 A)
 {