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/*
Copyright (C) 1996 John W. Eaton
This file is part of Octave.
Octave is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
Octave is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if !defined (octave_f77_fcn_h)
#define octave_f77_fcn_h 1
#ifdef __cplusplus
extern "C" {
#endif
#include <setjmp.h>
/* Some Fortran compilers append underscores or generate uppercase
external names. */
#if defined (F77_APPEND_UNDERSCORE)
#if defined (F77_UPPERCASE_NAMES)
#define F77_FCN(f, F) F##_
#else
#define F77_FCN(f, F) f##_
#endif
#else
#if defined (F77_UPPERCASE_NAMES)
#define F77_FCN(f, F) F
#else
#define F77_FCN(f, F) f
#endif
#endif
/* How to print an error for the F77_XFCN macro. */
#if defined (F77_UPPERCASE_NAMES)
#define F77_XFCN_ERROR(f, F) \
(*current_liboctave_error_handler) \
("exception encountered in Fortran subroutine %s", #F)
#else
#define F77_XFCN_ERROR(f, F) \
(*current_liboctave_error_handler) \
("exception encountered in Fortran subroutine %s", #f)
#endif
/* This can be used to call a Fortran subroutine that might call
XSTOPX. XSTOPX will call lonjmp with f77_context and we'll return,
call the error function, restore the previous context. After using
this macro, error_state should be checked. */
#define F77_XFCN(f, F, args) \
do \
{ \
jmp_buf saved_f77_context; \
f77_exception_encountered = 0; \
copy_f77_context ((char *) f77_context, (char *) saved_f77_context, \
sizeof (jmp_buf)); \
if (setjmp (f77_context)) \
{ \
f77_exception_encountered = 1; \
F77_XFCN_ERROR (f, F); \
} \
else \
F77_FCN (f, F) args; \
copy_f77_context ((char *) saved_f77_context, (char *) f77_context, \
sizeof (jmp_buf)); \
} \
while (0)
/* So we can check to see if an exception has occurred. */
extern int f77_exception_encountered;
/* For setjmp/longjmp. */
extern jmp_buf f77_context;
/* Defining this as a separate function allows us to avoid having to
include string.h in this file. */
extern void copy_f77_context (void *, void *, unsigned int);
#ifdef __cplusplus
}
#endif
#endif
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/
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