Re: [Qemu-devel] [PATCH v2] bitops.h: Add field32() and field64() functions to extract bitfields

[Jay Foad]

Eric Blake wrote:
> assert(start >= 0 && length > 0 && (unsigned) start + length <= 64);

This is shorter and avoids the ugly cast:

assert(start >= 0 && length > 0 && length <= 64 - start);

Jay.