Q48424: Mixed-Language Examples for Calling Fortran Are Incorrect

Article: Q48424
Product(s): See article
Version(s): 5.00 5.10 | 5.10
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | docerr H_MASM S_PasCal | mspl13_c
Last Modified: 16-JAN-1990

In the "Microsoft Mixed-Language Programmer's Guide" provided with C
Versions 5.00 and 5.10, MASM Versions 5.00 and 5.10, and Pascal
Version 4.00, the C and Pascal sample programs for calling a FORTRAN
subroutine are incorrect. The documentation error appears in two
different sections of the manual. The documentation error may be found
in the following locations:

1. Page 40, Section 3.4.1, "Calling FORTRAN from C -- Subroutine Call"

2. Page 67, Section 5.5.1, "Calling FORTRAN from Pascal -- Subroutine
   Call"

The source code in the manual compiles, but when linked with the
FORTRAN subroutine, the following error occurs:

   LINK : error L2029: Unresolved externals:

   MAXPAR in file(s):
    FACT.OBJ(fact.c)

   There was 1 error detected

This error occurs because the FORTRAN subroutine has a different name
than is used by the calling programs (maxparam instead of maxpar). To
get the two modules to link correctly, the following changes must be
made:

In C (Page 40), change

   extern void fortran maxpar (int near *, int near *);
                .
                .
   maxpar (&a, &b);

to the following:

   extern void fortran maxparam (int near *, int near *);
                .
                .
   maxparam (&a, &b);

In Pascal (Page 67), change

   procedure Maxpar (var i,j : integer) ; extern;
                .
                .
   Maxpar (a,b);

to the following:

   procedure Maxparam (var i,j : integer) ; extern;
                .
                .
   Maxparam (a,b);

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