------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S Y S T E M . V A L _ D E C -- -- -- -- B o d y -- -- -- -- Copyright (C) 1992-2018, 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. -- -- -- -- As a special exception under Section 7 of GPL version 3, you are granted -- -- additional permissions described in the GCC Runtime Library Exception, -- -- version 3.1, as published by the Free Software Foundation. -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- . -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ 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 : not null 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;