Synopsis - Cross-Reference

 1// -*- c++ -*-
 2//                          Package   : omniidl
 3// idlfixed.h               Created on: 2001/01/30
 4//			    Author    : Duncan Grisby (dpg1)
 5//
 6//    Copyright (C) 2001 AT&T Laboratories Cambridge
 7//
 8//  This file is part of omniidl.
 9//
10//  omniidl is free software; you can redistribute it and/or modify it
11//  under the terms of the GNU General Public License as published by
12//  the Free Software Foundation; either version 2 of the License, or
13//  (at your option) any later version.
14//
15//  This program is distributed in the hope that it will be useful,
16//  but WITHOUT ANY WARRANTY; without even the implied warranty of
17//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18//  General Public License for more details.
19//
20//  You should have received a copy of the GNU General Public License
21//  along with this program; if not, write to the Free Software
22//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
23//  02111-1307, USA.
24//
25// Description:
26//   
27//   Implementation of fixed point type
28
29// $Log: idlfixed.h,v $
30// Revision 1.1.4.1  2003/03/23 21:01:45  dgrisby
31// Start of omniORB 4.1.x development branch.
32//
33// Revision 1.1.2.2  2002/01/15 16:38:14  dpg1
34// On the road to autoconf. Dependencies refactored, configure.ac
35// written. No makefiles yet.
36//
37// Revision 1.1.2.1  2001/03/13 10:32:12  dpg1
38// Fixed point support.
39//
40
41#ifndef _idlfixed_h_
42#define _idlfixed_h_
43
44#include <idlsysdep.h>
45
46
47#ifndef OMNI_FIXED_DIGITS
48#  define OMNI_FIXED_DIGITS 31
49#endif
50
51
52class IDL_Fixed {
53public:
54
55  // Subset of functions from CORBA::Fixed
56
57  IDL_Fixed();
58  IDL_Fixed(const IDL_Fixed& f);
59  IDL_Fixed(const char* s, const char* file = 0, int line = 0);
60
61  IDL_Fixed(const IDL_Octet* val, IDL_UShort digits,
62	    IDL_UShort scale, IDL_Boolean negative);
63
64  ~IDL_Fixed();
65
66  IDL_Fixed truncate(IDL_UShort scale);
67
68  IDL_Fixed& operator=(const IDL_Fixed& f);
69
70  IDL_Fixed operator-() const;
71
72  IDL_UShort fixed_digits() const { return digits_; }
73  IDL_UShort fixed_scale()  const { return scale_;  }
74
75  char* asString() const;
76  // Return the value of the fixed as a string. Caller frees.
77
78  const IDL_Octet* val()      const { return val_;      }
79  IDL_Boolean      negative() const { return negative_; }
80
81  class Overflow     {};
82  class DivideByZero {};
83  // Exceptions thrown when fixed digits overflow or divide by zero
84
85private:
86  IDL_Octet   val_[OMNI_FIXED_DIGITS];
87  IDL_UShort  digits_;
88  IDL_UShort  scale_;
89  IDL_Boolean negative_; // true if negative; false if positive
90};
91
92IDL_Fixed operator+(const IDL_Fixed& a, const IDL_Fixed& b);
93IDL_Fixed operator-(const IDL_Fixed& a, const IDL_Fixed& b);
94IDL_Fixed operator*(const IDL_Fixed& a, const IDL_Fixed& b);
95IDL_Fixed operator/(const IDL_Fixed& a, const IDL_Fixed& b);
96
97
98#endif // _idlfixed_h_