| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUNTIME COMPONENTS -- |
| -- -- |
| -- S Y S T E M . W I D _ L L I -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 1992,1993,1994 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 2, 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. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- |
| -- MA 02111-1307, USA. -- |
| -- -- |
| -- As a special exception, if other files instantiate generics from this -- |
| -- unit, or you link this unit with other files to produce an executable, -- |
| -- this unit does not by itself cause the resulting executable to be -- |
| -- covered by the GNU General Public License. This exception does not -- |
| -- however invalidate any other reasons why the executable file might be -- |
| -- covered by the GNU Public License. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| package body System.Wid_LLI is |
| |
| ----------------------------- |
| -- Width_Long_Long_Integer -- |
| ----------------------------- |
| |
| function Width_Long_Long_Integer |
| (Lo, Hi : Long_Long_Integer) |
| return Natural |
| is |
| W : Natural; |
| T : Long_Long_Integer; |
| |
| 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_Integer'Max ( |
| abs (Long_Long_Integer'Max (Lo, Long_Long_Integer'First + 1)), |
| abs (Long_Long_Integer'Max (Hi, Long_Long_Integer'First + 1))); |
| |
| -- 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_Integer; |
| |
| end System.Wid_LLI; |
