The alignment
requirements of some data types are different on the HP 9000 workstations
and servers. Check any externally imposed data structure layouts
for differences. These may include byte and bit-field order, if
you are migrating from a VAX, or different internal padding for structure
member alignment. On the HP 9000 workstations and servers, doubles must be aligned on a 64-bit boundary, whereas
other machines require alignment on a 32-bit boundary. Refer to
Chapter 2 for complete storage and alignment information.