+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- S Y S T E M . V A X _ F L O A T _ O P E R A T I O N S --
--- --
--- S p e c --
--- --
--- $Revision: 1.2.10.2 $
--- --
--- Copyright (C) 1997-1998 Free Software Foundation, Inc. --
--- --
--- GNAT is free software; you can redistribute it and/or modify it under --
--- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 2, or (at your option) any later ver- --
--- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
--- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
--- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
--- This package contains runtime routines for handling the non-IEEE
--- floating-point formats used on the Vax and the Alpha.
-
-package System.Vax_Float_Operations is
-
- pragma Warnings (Off);
- -- Suppress warnings if not on Alpha/VAX
-
- type D is digits 9;
- pragma Float_Representation (VAX_Float, D);
- -- D Float type on Vax
-
- type G is digits 15;
- pragma Float_Representation (VAX_Float, G);
- -- G Float type on Vax
-
- type F is digits 6;
- pragma Float_Representation (VAX_Float, F);
- -- F Float type on Vax
-
- type S is digits 6;
- pragma Float_Representation (IEEE_Float, S);
- -- IEEE short
-
- type T is digits 15;
- pragma Float_Representation (IEEE_Float, T);
- -- IEEE long
-
- pragma Warnings (On);
-
- type Q is range -2 ** 63 .. +(2 ** 63 - 1);
- -- 64-bit signed integer
-
- --------------------------
- -- Conversion Functions --
- --------------------------
-
- function D_To_G (X : D) return G;
- function G_To_D (X : G) return D;
- -- Conversions between D float and G float
-
- function G_To_F (X : G) return F;
- function F_To_G (X : F) return G;
- -- Conversions between F float and G float
-
- function F_To_S (X : F) return S;
- function S_To_F (X : S) return F;
- -- Conversions between F float and IEEE short
-
- function G_To_T (X : G) return T;
- function T_To_G (X : T) return G;
- -- Conversions between G float and IEEE long
-
- function F_To_Q (X : F) return Q;
- function Q_To_F (X : Q) return F;
- -- Conversions between F float and 64-bit integer
-
- function G_To_Q (X : G) return Q;
- function Q_To_G (X : Q) return G;
- -- Conversions between G float and 64-bit integer
-
- function T_To_D (X : T) return D;
- -- Conversion from IEEE long to D_Float (used for literals)
-
- --------------------------
- -- Arithmetic Functions --
- --------------------------
-
- function Abs_F (X : F) return F;
- function Abs_G (X : G) return G;
- -- Absolute value of F/G float
-
- function Add_F (X, Y : F) return F;
- function Add_G (X, Y : G) return G;
- -- Addition of F/G float
-
- function Div_F (X, Y : F) return F;
- function Div_G (X, Y : G) return G;
- -- Division of F/G float
-
- function Mul_F (X, Y : F) return F;
- function Mul_G (X, Y : G) return G;
- -- Multiplication of F/G float
-
- function Neg_F (X : F) return F;
- function Neg_G (X : G) return G;
- -- Negation of F/G float
-
- function Sub_F (X, Y : F) return F;
- function Sub_G (X, Y : G) return G;
- -- Subtraction of F/G float
-
- --------------------------
- -- Comparison Functions --
- --------------------------
-
- function Eq_F (X, Y : F) return Boolean;
- function Eq_G (X, Y : G) return Boolean;
- -- Compares for X = Y
-
- function Le_F (X, Y : F) return Boolean;
- function Le_G (X, Y : G) return Boolean;
- -- Compares for X <= Y
-
- function Lt_F (X, Y : F) return Boolean;
- function Lt_G (X, Y : G) return Boolean;
- -- Compares for X < Y
-
- ----------------------
- -- Debug Procedures --
- ----------------------
-
- procedure Debug_Output_D (Arg : D);
- procedure Debug_Output_F (Arg : F);
- procedure Debug_Output_G (Arg : G);
- pragma Export (Ada, Debug_Output_D);
- pragma Export (Ada, Debug_Output_F);
- pragma Export (Ada, Debug_Output_G);
- -- These routines output their argument in decimal string form, with
- -- no terminating line return. They are provided for implicit use by
- -- the pre gnat-3.12w GDB, and are retained for backwards compatibility.
-
- function Debug_String_D (Arg : D) return System.Address;
- function Debug_String_F (Arg : F) return System.Address;
- function Debug_String_G (Arg : G) return System.Address;
- pragma Export (Ada, Debug_String_D);
- pragma Export (Ada, Debug_String_F);
- pragma Export (Ada, Debug_String_G);
- -- These routines return a decimal C string image of their argument.
- -- They are provided for implicit use by the debugger, in response to
- -- the special encoding used for Vax floating-point types (see Exp_Dbug
- -- for details). They supersede the above Debug_Output_D/F/G routines
- -- which didn't work properly with GDBTK.
-
- procedure pd (Arg : D);
- procedure pf (Arg : F);
- procedure pg (Arg : G);
- pragma Export (Ada, pd);
- pragma Export (Ada, pf);
- pragma Export (Ada, pg);
- -- These are like the Debug_Output_D/F/G procedures except that they
- -- output a line return after the output. They were originally present
- -- for direct use in GDB before GDB recognized Vax floating-point
- -- types, and are retained for backwards compatibility.
-
-private
- pragma Inline (D_To_G);
- pragma Inline (F_To_G);
- pragma Inline (F_To_Q);
- pragma Inline (F_To_S);
- pragma Inline (G_To_D);
- pragma Inline (G_To_F);
- pragma Inline (G_To_Q);
- pragma Inline (G_To_T);
- pragma Inline (Q_To_F);
- pragma Inline (Q_To_G);
- pragma Inline (S_To_F);
- pragma Inline (T_To_G);
-
- pragma Inline (Abs_F);
- pragma Inline (Abs_G);
- pragma Inline (Add_F);
- pragma Inline (Add_G);
- pragma Inline (Div_G);
- pragma Inline (Div_F);
- pragma Inline (Mul_F);
- pragma Inline (Mul_G);
- pragma Inline (Neg_G);
- pragma Inline (Neg_F);
- pragma Inline (Sub_F);
- pragma Inline (Sub_G);
-
- pragma Inline (Eq_F);
- pragma Inline (Eq_G);
- pragma Inline (Le_F);
- pragma Inline (Le_G);
- pragma Inline (Lt_F);
- pragma Inline (Lt_G);
-
-end System.Vax_Float_Operations;
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