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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [gcc/] [ada/] [s-fore.adb] - Blame information for rev 12

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1 12 jlechner
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT RUN-TIME COMPONENTS                         --
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--                                                                          --
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--                          S Y S T E M . F O R E                           --
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--                                                                          --
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--                                 B o d y                                  --
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--                                                                          --
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--           Copyright (C) 1992-2005 Free Software Foundation, Inc.         --
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--                                                                          --
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-- GNAT is free software;  you can  redistribute it  and/or modify it under --
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-- terms of the  GNU General Public License as published  by the Free Soft- --
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-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
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-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
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-- for  more details.  You should have  received  a copy of the GNU General --
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-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
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-- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
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-- Boston, MA 02110-1301, USA.                                              --
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--                                                                          --
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-- As a special exception,  if other files  instantiate  generics from this --
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-- unit, or you link  this unit with other files  to produce an executable, --
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-- this  unit  does not  by itself cause  the resulting  executable  to  be --
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-- covered  by the  GNU  General  Public  License.  This exception does not --
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-- however invalidate  any other reasons why  the executable file  might be --
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-- covered by the  GNU Public License.                                      --
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--                                                                          --
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-- GNAT was originally developed  by the GNAT team at  New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc.      --
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--                                                                          --
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------------------------------------------------------------------------------
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package body System.Fore is
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   ----------
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   -- Fore --
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   ----------
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   function Fore (Lo, Hi : Long_Long_Float) return Natural is
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      T : Long_Long_Float := Long_Long_Float'Max (abs Lo, abs Hi);
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      R : Natural;
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   begin
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      --  Initial value of 2 allows for sign and mandatory single digit
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      R := 2;
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      --  Loop to increase Fore as needed to include full range of values
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      while T >= 10.0 loop
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         T := T / 10.0;
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         R := R + 1;
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      end loop;
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      return R;
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   end Fore;
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end System.Fore;

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