------------------------------------------------------------------------------ | |

-- -- | |

-- 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; |