| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- E X P _ F I X D -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2022, 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; |
