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+------------------------------------------------------------------------------
+-- --
+-- GNAT RUN-TIME COMPONENTS --
+-- --
+-- S Y S T E M . W I D _ L L U --
+-- --
+-- B o d y --
+-- --
+-- Copyright (C) 1992-2009, 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 --
+-- <http://www.gnu.org/licenses/>. --
+-- --
+-- GNAT was originally developed by the GNAT team at New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
+-- --
+------------------------------------------------------------------------------
+
+with System.Unsigned_Types; use System.Unsigned_Types;
+
+package body System.Wid_LLU is
+
+ ------------------------------
+ -- Width_Long_Long_Unsigned --
+ ------------------------------
+
+ function Width_Long_Long_Unsigned
+ (Lo, Hi : Long_Long_Unsigned)
+ return Natural
+ is
+ W : Natural;
+ T : Long_Long_Unsigned;
+
+ begin
+ if Lo > Hi then
+ return 0;
+
+ else
+ -- Minimum value is 2, one for sign, one for digit
+
+ W := 2;
+
+ -- Get max of absolute values, but avoid bomb if we have the maximum
+ -- negative number (note that First + 1 has same digits as First)
+
+ T := Long_Long_Unsigned'Max (Lo, Hi);
+
+ -- Increase value if more digits required
+
+ while T >= 10 loop
+ T := T / 10;
+ W := W + 1;
+ end loop;
+
+ return W;
+ end if;
+
+ end Width_Long_Long_Unsigned;
+
+end System.Wid_LLU;