Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!nrcm3.nrc.ca!SERRER
From: SERRER@nrcm3.nrc.ca (Martin Serrer - Systems Manager)
Newsgroups: comp.sys.sgi
Subject: Binary representation of REAL #'s  VAX vs.IRIS
Message-ID: <90Jan4.144239est.57496@ugw.utcs.utoronto.ca>
Date: 4 Jan 90 19:33:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 27

Hello all,
  I asked this list sometime ago about moving binary files from a VAX to our
IRIS 4D50 via 4DDN and I thank you for the replies recieved.
  I have another problem now.
  These files were created on the VAX with a piece of FORTRAN code. The records
are were written as unformatted REAL*4 (F_floating) ie. four bytes arranged as
follows.

  bits   15    14                    7 6              0
        +-----------------------------------------------+
        |sign|       exponent         |    fraction     |
        +-----------------------------------------------+
        |          fraction                             |
        +-----------------------------------------------+
  bits   31                                           16

  I need to read these data files with a C program on the IRIS. Has anyone
written such a piece of code?? How are reals stored on the IRIS??
  Any help would be appreciated.
  I found the SWAP_*  and SEX routines in the programmers reference manual and
hoped that they might be of some use but they are not documented in a
particularly useful manner.
+-----------------------------------------------------------------------------+
| Martin Serrer                           Systems Lab., Bldg. M3, Montreal Rd.|
| 613-993-9442 (Bell)                     National Research Council of Canada,|
| serrer@syslab.nrc.ca (BITNET)           Ottawa,  Ontario,  Canada  K1A-0R6  |
+----------Software Rusts...------------------Rust never Sleeps...------------+