| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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; |
