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| author | Robert Morell <rmorell@nvidia.com> | 2012-04-25 11:45:01 +0200 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-04-27 09:29:35 +0100 |
| commit | f7f6c340f9d8f11bee50aef647b8578348957936 (patch) | |
| tree | 3c4593baa3a02dd6f06070bf5bcb459b3cf94ee3 /include/drm/drm_fixed.h | |
| parent | 398b4706896ee8d8e72f215a089b58637add5c92 (diff) | |
| download | linux-0-day-f7f6c340f9d8f11bee50aef647b8578348957936.tar.gz linux-0-day-f7f6c340f9d8f11bee50aef647b8578348957936.tar.xz | |
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>
Diffstat (limited to 'include/drm/drm_fixed.h')
| -rw-r--r-- | include/drm/drm_fixed.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/drm_fixed.h b/include/drm/drm_fixed.h index 4a08a664ff1f2..0ead502e17d27 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) { |