| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- S Y S T E M . V A L _ D E C -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- $Revision: 1.3 $ -- |
| -- -- |
| -- Copyright (C) 1992,1993,1994,1995,1996 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. -- |
| -- -- |
| -- As a special exception, if other files instantiate generics from this -- |
| -- unit, or you link this unit with other files to produce an executable, -- |
| -- this unit does not by itself cause the resulting executable to be -- |
| -- covered by the GNU General Public License. This exception does not -- |
| -- however invalidate any other reasons why the executable file might be -- |
| -- covered by the GNU Public License. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with System.Val_Real; use System.Val_Real; |
| |
| package body System.Val_Dec is |
| |
| ------------------ |
| -- Scan_Decimal -- |
| ------------------ |
| |
| -- For decimal types where Size < Integer'Size, it is fine to use |
| -- the floating-point circuit, since it certainly has sufficient |
| -- precision for any reasonable hardware, and we just don't support |
| -- things on junk hardware! |
| |
| function Scan_Decimal |
| (Str : String; |
| Ptr : access Integer; |
| Max : Integer; |
| Scale : Integer) |
| return Integer |
| is |
| Val : Long_Long_Float; |
| |
| begin |
| Val := Scan_Real (Str, Ptr, Max); |
| return Integer (Val * 10.0 ** Scale); |
| end Scan_Decimal; |
| |
| ------------------- |
| -- Value_Decimal -- |
| ------------------- |
| |
| -- Again, we use the real circuit for this purpose |
| |
| function Value_Decimal (Str : String; Scale : Integer) return Integer is |
| begin |
| return Integer (Value_Real (Str) * 10.0 ** Scale); |
| end Value_Decimal; |
| |
| end System.Val_Dec; |
