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) 1997-2002, 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 2,  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 COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 with CStand;   use CStand;
  28 with Einfo;    use Einfo;
  29 with Opt;      use Opt;
  30 with Stand;    use Stand;
  31 with Targparm; use Targparm;
  32 with Ttypef;   use Ttypef;
  33
  34 package body Sem_VFpt is
  35
  36    -----------------
  37    -- Set_D_Float --
  38    -----------------
  39
  40    procedure Set_D_Float (E : Entity_Id) is
  41    begin
  42       Init_Size         (Base_Type (E), 64);
  43       Init_Alignment    (Base_Type (E));
  44       Init_Digits_Value (Base_Type (E), VAXDF_Digits);
  45       Set_Vax_Float     (Base_Type (E), True);
  46       Set_Float_Bounds  (Base_Type (E));
  47
  48       Init_Size         (E, 64);
  49       Init_Alignment    (E);
  50       Init_Digits_Value (E, VAXDF_Digits);
  51       Set_Scalar_Range  (E, Scalar_Range (Base_Type (E)));
  52    end Set_D_Float;
  53
  54    -----------------
  55    -- Set_F_Float --
  56    -----------------
  57
  58    procedure Set_F_Float (E : Entity_Id) is
  59    begin
  60       Init_Size         (Base_Type (E), 32);
  61       Init_Alignment    (Base_Type (E));
  62       Init_Digits_Value (Base_Type (E), VAXFF_Digits);
  63       Set_Vax_Float     (Base_Type (E), True);
  64       Set_Float_Bounds  (Base_Type (E));
  65
  66       Init_Size         (E, 32);
  67       Init_Alignment    (E);
  68       Init_Digits_Value (E, VAXFF_Digits);
  69       Set_Scalar_Range  (E, Scalar_Range (Base_Type (E)));
  70    end Set_F_Float;
  71
  72    -----------------
  73    -- Set_G_Float --
  74    -----------------
  75
  76    procedure Set_G_Float (E : Entity_Id) is
  77    begin
  78       Init_Size         (Base_Type (E), 64);
  79       Init_Alignment    (Base_Type (E));
  80       Init_Digits_Value (Base_Type (E), VAXGF_Digits);
  81       Set_Vax_Float     (Base_Type (E), True);
  82       Set_Float_Bounds  (Base_Type (E));
  83
  84       Init_Size         (E, 64);
  85       Init_Alignment    (E);
  86       Init_Digits_Value (E, VAXGF_Digits);
  87       Set_Scalar_Range  (E, Scalar_Range (Base_Type (E)));
  88    end Set_G_Float;
  89
  90    -------------------
  91    -- Set_IEEE_Long --
  92    -------------------
  93
  94    procedure Set_IEEE_Long (E : Entity_Id) is
  95    begin
  96       Init_Size         (Base_Type (E), 64);
  97       Init_Alignment    (Base_Type (E));
  98       Init_Digits_Value (Base_Type (E), IEEEL_Digits);
  99       Set_Vax_Float     (Base_Type (E), False);
 100       Set_Float_Bounds  (Base_Type (E));
 101
 102       Init_Size         (E, 64);
 103       Init_Alignment    (E);
 104       Init_Digits_Value (E, IEEEL_Digits);
 105       Set_Scalar_Range  (E, Scalar_Range (Base_Type (E)));
 106    end Set_IEEE_Long;
 107
 108    --------------------
 109    -- Set_IEEE_Short --
 110    --------------------
 111
 112    procedure Set_IEEE_Short (E : Entity_Id) is
 113    begin
 114       Init_Size         (Base_Type (E), 32);
 115       Init_Alignment    (Base_Type (E));
 116       Init_Digits_Value (Base_Type (E), IEEES_Digits);
 117       Set_Vax_Float     (Base_Type (E), False);
 118       Set_Float_Bounds  (Base_Type (E));
 119
 120       Init_Size         (E, 32);
 121       Init_Alignment    (E);
 122       Init_Digits_Value (E, IEEES_Digits);
 123       Set_Scalar_Range  (E, Scalar_Range (Base_Type (E)));
 124    end Set_IEEE_Short;
 125
 126    ------------------------------
 127    -- Set_Standard_Fpt_Formats --
 128    ------------------------------
 129
 130    procedure Set_Standard_Fpt_Formats is
 131    begin
 132       --  IEEE case
 133
 134       if Opt.Float_Format = 'I' then
 135          Set_IEEE_Short (Standard_Float);
 136          Set_IEEE_Long  (Standard_Long_Float);
 137          Set_IEEE_Long  (Standard_Long_Long_Float);
 138
 139       --  Vax float case
 140
 141       else
 142          Set_F_Float (Standard_Float);
 143
 144          if Opt.Float_Format_Long = 'D' then
 145             Set_D_Float (Standard_Long_Float);
 146          else
 147             Set_G_Float (Standard_Long_Float);
 148          end if;
 149
 150          --  Note: Long_Long_Float gets set only in the real VMS case,
 151          --  because this gives better results for testing out the use
 152          --  of VAX float on non-VMS environments with the -gnatdm switch.
 153
 154          if OpenVMS_On_Target then
 155             Set_G_Float (Standard_Long_Long_Float);
 156          end if;
 157       end if;
 158    end Set_Standard_Fpt_Formats;
 159
 160 end Sem_VFpt;