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Diffstat (limited to 'gcc/ada/exp_fixd.ads')
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diff --git a/gcc/ada/exp_fixd.ads b/gcc/ada/exp_fixd.ads new file mode 100644 index 000000000..c1dc847a2 --- /dev/null +++ b/gcc/ada/exp_fixd.ads @@ -0,0 +1,140 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- E X P _ F I X D -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2008, 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 3, 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 COPYING3. If not, go to -- +-- http://www.gnu.org/licenses for a complete copy of the license. -- +-- -- +-- 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 multiplication 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 + -- 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; |