gcc/fortran/libgfortran.h

   1 /* Header file to the Fortran front-end and runtime library
   2    Copyright (C) 2007 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20
  21 /* Flags to specify which standard/extension contains a feature.
  22    Note that no features were obsoleted nor deleted in F2003.  */
  23 #define GFC_STD_LEGACY  (1<<6)  /* Backward compatibility.  */
  24 #define GFC_STD_GNU     (1<<5)  /* GNU Fortran extension.  */
  25 #define GFC_STD_F2003   (1<<4)  /* New in F2003.  */
  26 #define GFC_STD_F95     (1<<3)  /* New in F95.  */
  27 #define GFC_STD_F95_DEL (1<<2)  /* Deleted in F95.  */
  28 #define GFC_STD_F95_OBS (1<<1)  /* Obsolescent in F95.  */
  29 #define GFC_STD_F77     (1<<0)  /* Included in F77, but not deleted or
  30                                    obsolescent in later standards.  */
  31
  32
  33 /* Bitmasks for the various FPE that can be enabled.  */
  34 #define GFC_FPE_INVALID    (1<<0)
  35 #define GFC_FPE_DENORMAL   (1<<1)
  36 #define GFC_FPE_ZERO       (1<<2)
  37 #define GFC_FPE_OVERFLOW   (1<<3)
  38 #define GFC_FPE_UNDERFLOW  (1<<4)
  39 #define GFC_FPE_PRECISION  (1<<5)
  40
  41
  42 /* Possible values for the CONVERT I/O specifier.  */
  43 typedef enum
  44 {
  45   GFC_CONVERT_NONE = -1,
  46   GFC_CONVERT_NATIVE = 0,
  47   GFC_CONVERT_SWAP,
  48   GFC_CONVERT_BIG,
  49   GFC_CONVERT_LITTLE
  50 }
  51 unit_convert;
  52
  53
  54 /* Runtime errors.  */
  55 typedef enum
  56 {
  57   LIBERROR_FIRST = -3,          /* Marker for the first error.  */
  58   LIBERROR_EOR = -2,            /* End of record, must be negative.  */
  59   LIBERROR_END = -1,            /* End of file, must be negative.  */
  60   LIBERROR_OK = 0,              /* Indicates success, must be zero.  */
  61   LIBERROR_OS = 5000,           /* OS error, more info in errno.  */
  62   LIBERROR_OPTION_CONFLICT,
  63   LIBERROR_BAD_OPTION,
  64   LIBERROR_MISSING_OPTION,
  65   LIBERROR_ALREADY_OPEN,
  66   LIBERROR_BAD_UNIT,
  67   LIBERROR_FORMAT,
  68   LIBERROR_BAD_ACTION,
  69   LIBERROR_ENDFILE,
  70   LIBERROR_BAD_US,
  71   LIBERROR_READ_VALUE,
  72   LIBERROR_READ_OVERFLOW,
  73   LIBERROR_INTERNAL,
  74   LIBERROR_INTERNAL_UNIT,
  75   LIBERROR_ALLOCATION,
  76   LIBERROR_DIRECT_EOR,
  77   LIBERROR_SHORT_RECORD,
  78   LIBERROR_CORRUPT_FILE,
  79   LIBERROR_LAST                 /* Not a real error, the last error # + 1.  */
  80 }
  81 libgfortran_error_codes;
  82
  83
  84 /* Default unit number for preconnected standard input and output.  */
  85 #define GFC_STDIN_UNIT_NUMBER 5
  86 #define GFC_STDOUT_UNIT_NUMBER 6
  87 #define GFC_STDERR_UNIT_NUMBER 0
  88
  89
  90 #define GFC_MAX_DIMENSIONS 7
  91
  92 #define GFC_DTYPE_RANK_MASK 0x07
  93 #define GFC_DTYPE_TYPE_SHIFT 3
  94 #define GFC_DTYPE_TYPE_MASK 0x38
  95 #define GFC_DTYPE_SIZE_SHIFT 6
  96
  97 enum
  98 {
  99   GFC_DTYPE_UNKNOWN = 0,
 100   GFC_DTYPE_INTEGER,
 101   /* TODO: recognize logical types.  */
 102   GFC_DTYPE_LOGICAL,
 103   GFC_DTYPE_REAL,
 104   GFC_DTYPE_COMPLEX,
 105   GFC_DTYPE_DERIVED,
 106   GFC_DTYPE_CHARACTER
 107 };
 108