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drm: fixed: Add dfixed_frac

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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>
This commit is contained in:
Robert Morell 2012-04-25 11:45:01 +02:00 committed by Dave Airlie
parent 398b470689
commit f7f6c340f9
1 changed files with 1 additions and 0 deletions
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include/drm/drm_fixed.h
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@ -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)
{