------------------------------------------------------------------------------ -- -- -- 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;