Best way to Identify Endianness?

[Jesse Phillips]

Just thought I would check if there was a Phobos method available 
or if others had pointers. I'm currently just using a function:

bool bigEndian() {
   int i = 1;
   return *cast(ubyte*)&i == 0;
}

Any other options?

I'm using this for UUID <-> GUID conversion. GUID uses Native 
ordering for 3 groupings.