endless loop in probable_prime

[Viktor Dukhovni]

On Thu, Jun 18, 2020 at 09:46:52AM +0200, Ronny Meeus wrote:

> I added the print function and the result of the print is as follows:
> probable_prime BN_num_bits 1473 1536

The difference is exactly 63 bits!  Suggesting that either the high
64-bit bit word is 0x0000000000000001 or the bit counting is not
working right.

What is the "endianness" of this CPU?  Is it big-endian or
little-endian?  And does OpenSSL expect the correct one?

-- 
    Viktor.