Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cwjcc!tut.cis.ohio-state.edu!ucbvax!hplabs!hpfcdc!don
From: don@hpfcdc.HP.COM (Don Gourley)
Newsgroups: comp.sys.hp
Subject: Re: HP-UX Fortran/C Procedure Calling Protocol
Message-ID: <5570234@hpfcdc.HP.COM>
Date: 5 Jul 89 16:39:53 GMT
References: <105@wupulm.UUCP>
Organization: HP Ft. Collins, Co.
Lines: 12

On the HP9000 Series 300 machines, FORTRAN & C return basic numeric values
in the same register(s):  d0 for 4 byte values & d0,d1 for 8 byte values.
FORTRAN complex values are not returned in registers and it would require
some more detailed knowledge of their representation and calling convention
to interface complex-valued functions with C functions.


*******/  *****************************************************************
***** /_  _ *****    Don Gourley               hplabs!hpfcla!dong         *
**** / / /_/ ****    Colorado Language Lab     dong%hpfcla@hplabs.hp.com  *
*****   /   *****    Hewlett-Packard Comp.                                *
*******/  *****************************************************************