------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- S Y S T E M . F O R E _ D -- -- -- -- B o d y -- -- -- -- Copyright (C) 2020-2023, 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. -- -- -- ------------------------------------------------------------------------------ package body System.Fore_D is ------------------ -- Fore_Decimal -- ------------------ function Fore_Decimal (Lo, Hi : Int; Scale : Integer) return Natural is function Negative_Abs (Val : Int) return Int is (if Val <= 0 then Val else -Val); -- Return the opposite of the absolute value of Val T : Int := Int'Min (Negative_Abs (Lo), Negative_Abs (Hi)); F : Natural; begin -- Initial value of 2 allows for sign and mandatory single digit F := 2; -- Loop to increase Fore as needed to include full range of values while T <= -10 loop T := T / 10; F := F + 1; end loop; return Natural'Max (F - Scale, 2); end Fore_Decimal; end System.Fore_D;