1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- S Y S T E M . V A L _ L L D -- 6-- -- 7-- B o d y -- 8-- -- 9-- Copyright (C) 1992-2009, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- GNAT was originally developed by the GNAT team at New York University. -- 28-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29-- -- 30------------------------------------------------------------------------------ 31 32with System.Val_Real; use System.Val_Real; 33 34package body System.Val_LLD is 35 36 ---------------------------- 37 -- Scan_Long_Long_Decimal -- 38 ---------------------------- 39 40 -- We use the floating-point circuit for now, this will be OK on a PC, 41 -- but definitely does NOT have the required precision if the longest 42 -- float type is IEEE double. This must be fixed in the future ??? 43 44 function Scan_Long_Long_Decimal 45 (Str : String; 46 Ptr : not null access Integer; 47 Max : Integer; 48 Scale : Integer) return Long_Long_Integer 49 is 50 Val : Long_Long_Float; 51 begin 52 Val := Scan_Real (Str, Ptr, Max); 53 return Long_Long_Integer (Val * 10.0 ** Scale); 54 end Scan_Long_Long_Decimal; 55 56 ----------------------------- 57 -- Value_Long_Long_Decimal -- 58 ----------------------------- 59 60 -- Again we cheat and use floating-point ??? 61 62 function Value_Long_Long_Decimal 63 (Str : String; 64 Scale : Integer) return Long_Long_Integer 65 is 66 begin 67 return Long_Long_Integer (Value_Real (Str) * 10.0 ** Scale); 68 end Value_Long_Long_Decimal; 69 70end System.Val_LLD; 71