From mboxrd@z Thu Jan  1 00:00:00 1970
From: Randi Botse <nightdecoder@gmail.com>
Subject: Re: Help on bit operation
Date: Sat, 29 Aug 2009 14:40:54 +0700
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To: Glynn Clements <glynn@gclements.plus.com>
Cc: linux-c-programming@vger.kernel.org

everything is clear now!, thanks all for your guides and patience.

    - Randi


On Sat, Aug 29, 2009 at 3:19 AM, Glynn Clements<glynn@gclements.plus.co=
m> wrote:
>
> Randi Botse wrote:
>
>> Ben, after assign all bitfield struct member, how to pack them to be=
 a
>> 32bit integer value?
>
> The structure should be 32 bits wide. If you need the value as a
> uint32_t, either use a union:
>
> =A0 =A0 =A0 =A0union bits_or_int {
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct bitfield fields;
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0uint32_t value;
> =A0 =A0 =A0 =A0};
>
> or a cast, e.g.:
>
> =A0 =A0 =A0 =A0struct bitfield foo;
> =A0 =A0 =A0 =A0...
> =A0 =A0 =A0 =A0uint32_t value =3D *(uint32_t *)&foo;
>
> --
> Glynn Clements <glynn@gclements.plus.com>
>
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