[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [List Home]
Subject: Re: [virtio] [PATCH] introduction: add note on bitfield portability
On Tue, 6 Mar 2018 16:35:46 +0200 "Michael S. Tsirkin" <mst@redhat.com> wrote: [You picked my old email address :)] > Signed-off-by: Michael S. Tsirkin <mst@redhat.com> > --- > introduction.tex | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/introduction.tex b/introduction.tex > index d0b770e..18ad76e 100644 > --- a/introduction.tex > +++ b/introduction.tex > @@ -175,5 +175,12 @@ packed by C compilers on little-endian architectures but not the > way bitfields are packed by C compilers on big-endian > architectures. > > +Assuming that CPU_TO_BE16 converts a 16-bit integer from a native > +CPU to the big-endian byte order, the following is the equivalent > +portable C code to generate a value in this format: > +\begin{lstlisting} > +CPU_TO_BE16(B << 15 | A) > +\end{lstlisting} > + > \newpage > Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [List Home]