<p dir="ltr"><br>
</p>
<br><div class="gmail_quote"><div dir="ltr">On Tue 28 Jul, 2015 20:24 Kevin Wilson <<a href="mailto:wkevils@gmail.com">wkevils@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi all,<br>
Is there a kernel API for handling 32 bits ?<br>
I see a macro like BIT(nr)<br>
<a href="http://lxr.free-electrons.com/source/include/linux/bitops.h#L6" rel="noreferrer" target="_blank">http://lxr.free-electrons.com/source/include/linux/bitops.h#L6</a><br>
<br>
#define BIT(nr) (1UL << (nr))<br>
<br>
and also<br>
#define BIT_ULL(nr) (1ULL << (nr))<br>
<br>
However, these macros are using 64 bit semantics, so if I will use<br>
them with 32 bits values<br>
the results will be wrong.<br>
<br>
Any ideas ?<br>
<br>
Regards,<br>
Kevin<br>
<br>
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</blockquote></div><p dir="ltr">The macros don't do type checking so it will work for both 32-bit and 64-bit.</p>