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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_f77_fcn_h) |
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24 #define octave_f77_fcn_h 1 |
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25 |
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26 #ifdef __cplusplus |
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27 extern "C" { |
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28 #endif |
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29 |
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30 #include <setjmp.h> |
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31 |
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32 /* hack to stringize macro results */ |
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33 #define xSTRINGIZE(x) #x |
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34 #define STRINGIZE(x) xSTRINGIZE(x) |
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35 |
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36 /* How to print an error for the F77_XFCN macro. */ |
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37 |
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38 #define F77_XFCN_ERROR(f, F) \ |
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39 (*current_liboctave_error_handler) \ |
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40 ("exception encountered in Fortran subroutine %s", \ |
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41 STRINGIZE (F77_FUNC (f, F))) |
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42 |
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43 /* This can be used to call a Fortran subroutine that might call |
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44 XSTOPX. XSTOPX will call lonjmp with f77_context and we'll return, |
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45 call the error function, restore the previous context. After using |
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46 this macro, error_state should be checked. */ |
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47 |
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48 #define F77_XFCN(f, F, args) \ |
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49 do \ |
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50 { \ |
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51 jmp_buf saved_f77_context; \ |
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52 f77_exception_encountered = 0; \ |
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53 copy_f77_context ((char *) f77_context, (char *) saved_f77_context, \ |
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54 sizeof (jmp_buf)); \ |
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55 if (setjmp (f77_context)) \ |
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56 { \ |
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57 f77_exception_encountered = 1; \ |
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58 F77_XFCN_ERROR (f, F); \ |
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59 } \ |
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60 else \ |
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61 F77_FUNC (f, F) args; \ |
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62 copy_f77_context ((char *) saved_f77_context, (char *) f77_context, \ |
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63 sizeof (jmp_buf)); \ |
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64 } \ |
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65 while (0) |
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66 |
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67 /* So we can check to see if an exception has occurred. */ |
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68 extern int f77_exception_encountered; |
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69 |
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70 /* For setjmp/longjmp. */ |
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71 extern jmp_buf f77_context; |
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72 |
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73 /* Defining this as a separate function allows us to avoid having to |
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74 include string.h in this file. */ |
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75 |
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76 extern void copy_f77_context (void *, void *, unsigned int); |
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77 |
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78 #if !defined (F77_FCN) |
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79 #define F77_FCN(f, F) F77_FUNC (f, F) |
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80 #endif |
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81 |
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82 #ifdef __cplusplus |
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83 } |
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84 #endif |
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85 |
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86 #endif |
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87 |
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88 /* |
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89 ;;; Local Variables: *** |
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90 ;;; mode: C++ *** |
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91 ;;; End: *** |
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92 */ |
