Hi Mikael, > I spotted two unexpected things (to me at least) related to x86 extended type: > - You check for endianness, so the format is not x86-specific? > - Is it expected that the padding bits are in the middle of the data in the > big-endian case?
IEEE specifies that extended precision types can be present, possibly with any endianness, at least in theory. There are other CPUs with extended precision types than Intel, although we probably don’t support them currently in gfortran: Motorola 68881 has a IEEE-compatible 80-bit format and is big endian. I kept the code generic, but if you think it’s a problem I can remove that part and make it error out. I followed the logic used in glibc to deal with bit layout and endianness, so it should be safe as currently proposed. FX
