Messages in this thread | | | From | David Howells <> | Subject | Re: roundup_pow_of_two() may not handle 64-bit integers | Date | Thu, 15 May 2014 16:03:09 +0100 |
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Brian Norris <computersforpeace@gmail.com> wrote:
> I'm looking to use roundup_pow_of_two() (actually, order_base_2()) > from <linux/log2.h>, but it seems that it only supports 64-bit integers > if your toolchain uses a 64-bit 'unsigned long' type. This is strange, > considering that ilog2() is explicitly designed for 32-bit or 64-bit > compatibility.
ilog2() was explicitly designed for use with 'unsigned long'. See the commit description (f0d1b0b30d250a07627ad8b9fbbb5c7cc08422e8). It may work with unsigned long long, however...
David
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