gcc/ada/i-fortra.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                   I N T E R F A C E S . F O R T R A N                    --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 -- This specification is derived from the Ada Reference Manual for use with --
  10 -- GNAT.  In accordance with the copyright of that document, you can freely --
  11 -- copy and modify this specification,  provided that if you redistribute a --
  12 -- modified version,  any changes that you have made are clearly indicated. --
  13 --                                                                          --
  14 ------------------------------------------------------------------------------
  15
  16 with Ada.Numerics.Generic_Complex_Types;
  17 pragma Elaborate_All (Ada.Numerics.Generic_Complex_Types);
  18
  19 package Interfaces.Fortran is
  20    pragma Pure;
  21
  22    type Fortran_Integer  is new Integer;
  23    type Real             is new Float;
  24    type Double_Precision is new Long_Float;
  25
  26    type Logical is new Boolean;
  27    for Logical'Size use Integer'Size;
  28    pragma Convention (Fortran, Logical);
  29    --  As required by Fortran standard, stand alone logical allocates same
  30    --  space as integer (but what about the array case???). The convention
  31    --  is important, since in Fortran, Booleans have zero/non-zero semantics
  32    --  for False/True, and the pragma Convention (Fortran) activates the
  33    --  special handling required in this case.
  34
  35    package Single_Precision_Complex_Types is
  36       new Ada.Numerics.Generic_Complex_Types (Real);
  37
  38    package Double_Precision_Complex_Types is
  39       new Ada.Numerics.Generic_Complex_Types (Double_Precision);
  40
  41    type Complex is new Single_Precision_Complex_Types.Complex;
  42
  43    type Double_Complex is new Double_Precision_Complex_Types.Complex;
  44
  45    subtype Imaginary is Single_Precision_Complex_Types.Imaginary;
  46    i : Imaginary renames Single_Precision_Complex_Types.i;
  47    j : Imaginary renames Single_Precision_Complex_Types.j;
  48
  49    type Character_Set is new Character;
  50
  51    type Fortran_Character is array (Positive range <>) of Character_Set;
  52
  53    function To_Fortran (Item : Character)     return Character_Set;
  54    function To_Ada     (Item : Character_Set) return Character;
  55
  56    function To_Fortran (Item : String)            return Fortran_Character;
  57    function To_Ada     (Item : Fortran_Character) return String;
  58
  59    procedure To_Fortran
  60      (Item   : String;
  61       Target : out Fortran_Character;
  62       Last   : out Natural);
  63
  64    procedure To_Ada
  65      (Item   : Fortran_Character;
  66       Target : out String;
  67       Last   : out Natural);
  68
  69 end Interfaces.Fortran;