Re: [Libguestfs] [PATCH nbdkit v2] common: isaligned: Use a macro instead of relying on implicit truncation.

On 9/17/18 4:41 PM, Nir Soffer wrote:

The FreeBSD version:

#define IS_ALIGNED <http://fxr.watson.org/fxr/ident?i=IS_ALIGNED>(n <http://fxr.watson.org/fxr/ident?i=n>,align) (!((uint32_t)(n <http://fxr.watson.org/fxr/ident?i=n>) & (align - 1)))

http://fxr.watson.org/fxr/source/contrib/ncsw/inc/ncsw_ext.h#L182

Which truncates to 32 bits. But that's what we're trying to get rid of - by moving to a macro that lets us do full 64-bit alignment if needed. -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org