From: Robert Morell <rmorell@xxxxxxxxxx>
This helper macro retrieves the fractional part of a fixed20_12 20.12
fixed-point number.
Signed-off-by: Robert Morell <rmorell@xxxxxxxxxx>
Signed-off-by: Olof Johansson <olofj@xxxxxxxxxxxx>
Signed-off-by: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx>
---
include/drm/drm_fixed.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/drm/drm_fixed.h b/include/drm/drm_fixed.h
index 4a08a66..0ead502 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)
{
--
1.7.10
--
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