------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- E X P _ F I X D --
-- --
-- S p e c --
-- --
-- Copyright (C) 1992,1993,1994 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. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- Expand routines for fixed-point convert, divide and multiply operations
with Types; use Types;
package Exp_Fixd is
-- General note on universal fixed. In the routines below, a fixed-point
-- type is always a specific fixed-point type or universal real, never
-- universal fixed. Universal fixed only appears as the result type of a
-- division or multplication and in all such cases, the parent node, which
-- must be either a conversion node or a 'Round attribute reference node,
-- has the specific type information. In both cases, the parent node is
-- removed from the tree, and the appropriate routine in this package is
-- called with a multiply or divide node with all types (and also possibly
-- the Rounded_Result flag) set.
----------------------------
-- Fixed-Point Conversion --
----------------------------
procedure Expand_Convert_Fixed_To_Fixed (N : Node_Id);
-- This routine expands the conversion of one fixed-point type to another,
-- N is the N_Op_Conversion node with the result and expression types (and
-- possibly the Rounded_Result flag) set.
procedure Expand_Convert_Fixed_To_Float (N : Node_Id);
-- This routine expands the conversion from a fixed-point type to a
-- floating-point type. N is an N_Type_Conversion node with the result
-- and expression types set.
procedure Expand_Convert_Fixed_To_Integer (N : Node_Id);
-- This routine expands the conversion from a fixed-point type to an
-- integer type. N is an N_Type_Conversion node with the result and
-- operand types set.
procedure Expand_Convert_Float_To_Fixed (N : Node_Id);
-- This routine expands the conversion from a floating-point type to
-- a fixed-point type. N is an N_Type_Conversion node with the result
-- and operand types (and possibly the Rounded_Result flag) set.
procedure Expand_Convert_Integer_To_Fixed (N : Node_Id);
-- This routine expands the conversion from an integer type to a
-- fixed-point type. N is an N_Type_Conversion node with the result
-- and operand types (and possibly the Rounded_Result flag) set.
--------------------------
-- Fixed-Point Division --
--------------------------
procedure Expand_Decimal_Divide_Call (N : Node_Id);
-- This routine expands a call to the procedure Decimal.Divide. The
-- argument N is the N_Function_Call node.
procedure Expand_Divide_Fixed_By_Fixed_Giving_Fixed (N : Node_Id);
-- This routine expands the division between fixed-point types, with
-- a fixed-point type result. N is an N_Op_Divide node with operand
-- and result types (and possibly the Rounded_Result flag) set. Either
-- (but not both) of the operands may be universal real.
procedure Expand_Divide_Fixed_By_Fixed_Giving_Float (N : Node_Id);
-- This routine expands the division between two fixed-point types with
-- a floating-point result. N is an N_Op_Divide node with the result
-- and operand types set. Either (but not both) of the operands may be
-- universal real.
procedure Expand_Divide_Fixed_By_Fixed_Giving_Integer (N : Node_Id);
-- This routine expands the division between two fixed-point types with
-- an integer type result. N is an N_Op_Divide node with the result and
-- operand types set. Either (but not both) of the operands may be
-- universal real.
procedure Expand_Divide_Fixed_By_Integer_Giving_Fixed (N : Node_Id);
-- This routine expands the division between a fixed-point type and
-- standard integer type. The result type is the same fixed-point type
-- as the operand type. N is an N_Op_Divide node with the result and
-- left operand types being the fixed-point type, and the right operand
-- type being standard integer (and possibly Rounded_Result set).
--------------------------------
-- Fixed-Point Multiplication --
--------------------------------
procedure Expand_Multiply_Fixed_By_Fixed_Giving_Fixed (N : Node_Id);
-- This routine expands the multiplication between fixed-point types
-- with a fixed-point type result. N is an N_Op_Multiply node with the
-- result and operand types set. Either (but not both) of the operands
-- may be universal real.
procedure Expand_Multiply_Fixed_By_Fixed_Giving_Float (N : Node_Id);
-- This routine expands the multiplication between two fixed-point types
-- with a floating-point result. N is an N_Op_Multiply node with the
-- result and operand types set. Either (but not both) of the operands
-- may be universal real.
procedure Expand_Multiply_Fixed_By_Fixed_Giving_Integer (N : Node_Id);
-- This routine expands the multiplication between two fixed-point types
-- with an integer result. N is an N_Op_Multiply node with the result
-- and operand types set. Either (but not both) of the operands may be
-- be universal real.
procedure Expand_Multiply_Fixed_By_Integer_Giving_Fixed (N : Node_Id);
-- This routine expands the multiplication between a fixed-point type and
-- a standard integer type. The result type is the same fixed-point type
-- as the fixed operand type. N is an N_Op_Multiply node whose result type
-- and left operand types are the fixed-point type, and whose right operand
-- type is always standard integer.
procedure Expand_Multiply_Integer_By_Fixed_Giving_Fixed (N : Node_Id);
-- This routine expands the multiplication between standard integer and a
-- fixed-point type. The result type is the same fixed-point type as the
-- the fixed operand type. N is an N_Op_Multiply node whose result type
-- and right operand types are the fixed-point type, and whose left operand
-- type is always standard integer.
end Exp_Fixd;