Reviewed-by: Marek Olšák <[email protected]> Marek
On Sun, Apr 17, 2016 at 1:43 AM, Bas Nieuwenhuizen <[email protected]> wrote: > For use by radeonsi. > > v2: Make sure that it works for all 64 bits set. > > Signed-off-by: Bas Nieuwenhuizen <[email protected]> > --- > src/gallium/auxiliary/util/u_math.h | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/src/gallium/auxiliary/util/u_math.h > b/src/gallium/auxiliary/util/u_math.h > index b4ac0db..96c1618 100644 > --- a/src/gallium/auxiliary/util/u_math.h > +++ b/src/gallium/auxiliary/util/u_math.h > @@ -523,6 +523,20 @@ u_bit_scan_consecutive_range(unsigned *mask, int *start, > int *count) > *mask &= ~(((1 << *count) - 1) << *start); > } > > +static inline void > +u_bit_scan_consecutive_range64(uint64_t *mask, int *start, int *count) > +{ > + if (*mask == ~0llu) { > + *start = 0; > + *count = 64; > + *mask = 0; > + return; > + } > + *start = ffsll(*mask) - 1; > + *count = ffsll(~(*mask >> *start)) - 1; > + *mask &= ~(((1llu << *count) - 1) << *start); > +} > + > /** > * Return float bits. > */ > -- > 2.8.0 > > _______________________________________________ > mesa-dev mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/mesa-dev _______________________________________________ mesa-dev mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-dev
