Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!jato!vsnyder
From: vsnyder@jato.jpl.nasa.gov (Van Snyder)
Newsgroups: comp.lang.fortran
Subject: Re: Pseudo-FORTRAN -- f2c for the Macintosh
Message-ID: <1991Jun3.170858.23956@jato.jpl.nasa.gov>
Date: 3 Jun 91 17:08:58 GMT
References: <1991May30.040829.8696@eplrx7.uucp> <1017@DIALix.oz.au>
Reply-To: vsnyder@jato.Jpl.Nasa.Gov (Van Snyder)
Organization: Jet Propulsion Laboratory, Pasadena, CA
Lines: 37

In article <1017@DIALix.oz.au> dent@DIALix.oz.au (Andrew Dent) writes:
>In <1991May30.040829.8696@eplrx7.uucp> leipold@eplrx7.uucp (Walt Leipold) writes:
>
>>I've used f2c, and it works fine -- at least, the generated C code compiles
>>and runs on a Un*x system.  The C code also compiles under Think C on the
>>Macintosh, but it won't link without f2c's 'standard' libraries, libF77 and
>>libI77.  Can anyone out there who has ported these libraries to the Mac
>>give me some hints?  *Has* anyone used f2c to generate code for the Mac?  I 
>>don't want to run f2c on a Mac; I just want to run the C code it generates.
>
>I'd be very interested to hear if f2c generates successful code for the
>Mac as I've spent most of the past 3 months writing a converter from FORTRAN to
>THINK Pascal. The biggest problem I encountered is the way the Mac stores
>integers, which causes major problems with arrays of different cell sizes
>being EQUIVALENCED.
>
>eg: INTEGER*2 little(2)
>    INTEGER*4 big
>     EQUIVALENCE (little,big)
>    little(1) = 10
>    little(2) = 99
>
>on VMS & MS-DOS, big would now have the value 6488074
>on Mac: 655459 because the bytes are stored in the opposite order to all
>FORTRAN implementations.
>
>I think that MacFORTRAN has the same problem (without trying to fix it) 
>which means people porting code to the Mac will have a nasty time of it
>(the stuff I'm translating has algorithms that use overlaid 4 & 2 byte
>integers all the time, AND the actual binary representations are important:-(
>
For doing such a thing, you deserve what happens to you.

-- 
vsnyder@jato.Jpl.Nasa.Gov
ames!elroy!jato!vsnyder
vsnyder@jato.uucp