home *** CD-ROM | disk | FTP | other *** search
- ------------------------------------------------------------------------------
- -- --
- -- GNAT RUNTIME COMPONENTS --
- -- --
- -- S Y S T E M . M A N T I S S A --
- -- --
- -- B o d y --
- -- --
- -- $Revision: 1.1 $ --
- -- --
- -- Copyright (C) 1996 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. --
- -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
- -- --
- ------------------------------------------------------------------------------
-
- package body System.Mantissa is
-
- --------------------
- -- Mantissa_Value --
- --------------------
-
- function Mantissa_Value (First, Last : Integer) return Natural is
- Result : Natural := 0;
- Val : Natural := Natural'Max (abs First, abs Last);
-
- begin
- while Val /= 0 loop
- Val := Val / 2;
- Result := Result + 1;
- end loop;
-
- return Result;
- end Mantissa_Value;
-
- end System.Mantissa;
-