Hi, For the case $Config{longdblkind} == 1, the Config docs describe the long double as "IEEE 754 128-bit big little endian". I take it that this corresponds to a byte order of "43218765". From that description, the byte order could also be "56781234". Or would that be termed "little big endian" instead of "big little endian" ? Would longdblkind for a "56781234" configuration be set to 1, or would it be set to -1 ? Anyway, I'm thinking (hoping) that a configuration of "56781234" is either non-existent or very rare. Right ? Cheers, RobThread Next