I don't see a precise definition of "rank", but I do see that there is a bit
of confusion about "rank" vs. "size". To quote from 6.3.1.1 (not 6.2.1.1):
-- No two signed integer types shall have the same rank, even if they have
the same representation.
-- The rank of long long int shall be greater than the rank of long int,
which shall be greater than the rank of int, which shall be greater
than the rank of short int, which shall be greater than the rank of
signed char.
The 1st bullet indicates that rank is independant of representation and if
you look at the definitions within <limits.h> (5.2.4.2.1) you'll see that
signed char is at least 8 bits long
short int is at least 16 bits long
int is at least 16 bits long
long is at least 32 bits long
long long is at least 64 bits long
There is no prohibition against all of the integer types being the same length
as long as the minimum requirements are meet.
John Cochran
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