gcc/ada/sem_vfpt.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             S E M _ V F P T                              --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1997-2007, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 with CStand;   use CStand;
  27 with Einfo;    use Einfo;
  28 with Opt;      use Opt;
  29 with Stand;    use Stand;
  30 with Targparm; use Targparm;
  31 with Ttypef;   use Ttypef;
  32
  33 package body Sem_VFpt is
  34
  35    -----------------
  36    -- Set_D_Float --
  37    -----------------
  38
  39    procedure Set_D_Float (E : Entity_Id) is
  40    begin
  41       Init_Size         (Base_Type (E), 64);
  42       Init_Alignment    (Base_Type (E));
  43       Init_Digits_Value (Base_Type (E), VAXDF_Digits);
  44       Set_Vax_Float     (Base_Type (E), True);
  45       Set_Float_Bounds  (Base_Type (E));
  46
  47       Init_Size         (E, 64);
  48       Init_Alignment    (E);
  49       Init_Digits_Value (E, VAXDF_Digits);
  50       Set_Scalar_Range  (E, Scalar_Range (Base_Type (E)));
  51    end Set_D_Float;
  52
  53    -----------------
  54    -- Set_F_Float --
  55    -----------------
  56
  57    procedure Set_F_Float (E : Entity_Id) is
  58    begin
  59       Init_Size         (Base_Type (E), 32);
  60       Init_Alignment    (Base_Type (E));
  61       Init_Digits_Value (Base_Type (E), VAXFF_Digits);
  62       Set_Vax_Float     (Base_Type (E), True);
  63       Set_Float_Bounds  (Base_Type (E));
  64
  65       Init_Size         (E, 32);
  66       Init_Alignment    (E);
  67       Init_Digits_Value (E, VAXFF_Digits);
  68       Set_Scalar_Range  (E, Scalar_Range (Base_Type (E)));
  69    end Set_F_Float;
  70
  71    -----------------
  72    -- Set_G_Float --
  73    -----------------
  74
  75    procedure Set_G_Float (E : Entity_Id) is
  76    begin
  77       Init_Size         (Base_Type (E), 64);
  78       Init_Alignment    (Base_Type (E));
  79       Init_Digits_Value (Base_Type (E), VAXGF_Digits);
  80       Set_Vax_Float     (Base_Type (E), True);
  81       Set_Float_Bounds  (Base_Type (E));
  82
  83       Init_Size         (E, 64);
  84       Init_Alignment    (E);
  85       Init_Digits_Value (E, VAXGF_Digits);
  86       Set_Scalar_Range  (E, Scalar_Range (Base_Type (E)));
  87    end Set_G_Float;
  88
  89    -------------------
  90    -- Set_IEEE_Long --
  91    -------------------
  92
  93    procedure Set_IEEE_Long (E : Entity_Id) is
  94    begin
  95       Init_Size         (Base_Type (E), 64);
  96       Init_Alignment    (Base_Type (E));
  97       Init_Digits_Value (Base_Type (E), IEEEL_Digits);
  98       Set_Vax_Float     (Base_Type (E), False);
  99       Set_Float_Bounds  (Base_Type (E));
 100
 101       Init_Size         (E, 64);
 102       Init_Alignment    (E);
 103       Init_Digits_Value (E, IEEEL_Digits);
 104       Set_Scalar_Range  (E, Scalar_Range (Base_Type (E)));
 105    end Set_IEEE_Long;
 106
 107    --------------------
 108    -- Set_IEEE_Short --
 109    --------------------
 110
 111    procedure Set_IEEE_Short (E : Entity_Id) is
 112    begin
 113       Init_Size         (Base_Type (E), 32);
 114       Init_Alignment    (Base_Type (E));
 115       Init_Digits_Value (Base_Type (E), IEEES_Digits);
 116       Set_Vax_Float     (Base_Type (E), False);
 117       Set_Float_Bounds  (Base_Type (E));
 118
 119       Init_Size         (E, 32);
 120       Init_Alignment    (E);
 121       Init_Digits_Value (E, IEEES_Digits);
 122       Set_Scalar_Range  (E, Scalar_Range (Base_Type (E)));
 123    end Set_IEEE_Short;
 124
 125    ------------------------------
 126    -- Set_Standard_Fpt_Formats --
 127    ------------------------------
 128
 129    procedure Set_Standard_Fpt_Formats is
 130    begin
 131       --  IEEE case
 132
 133       if Opt.Float_Format = 'I' then
 134          Set_IEEE_Short (Standard_Float);
 135          Set_IEEE_Long  (Standard_Long_Float);
 136          Set_IEEE_Long  (Standard_Long_Long_Float);
 137
 138       --  Vax float case
 139
 140       else
 141          Set_F_Float (Standard_Float);
 142
 143          if Opt.Float_Format_Long = 'D' then
 144             Set_D_Float (Standard_Long_Float);
 145          else
 146             Set_G_Float (Standard_Long_Float);
 147          end if;
 148
 149          --  Note: Long_Long_Float gets set only in the real VMS case,
 150          --  because this gives better results for testing out the use
 151          --  of VAX float on non-VMS environments with the -gnatdm switch.
 152
 153          if OpenVMS_On_Target then
 154             Set_G_Float (Standard_Long_Long_Float);
 155          end if;
 156       end if;
 157    end Set_Standard_Fpt_Formats;
 158
 159 end Sem_VFpt;