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[project @ 1993-08-08 01:20:23 by jwe] Initial revision
author jwe
date Sun, 08 Aug 1993 01:21:46 +0000
parents
children 380cb9ccc889
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2:c0190df9885d 3:9a4c07481e61
1 // Range.h -*- C++ -*-
2 /*
3
4 Copyright (C) 1992, 1993 John W. Eaton
5
6 This file is part of Octave.
7
8 Octave is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
11 later version.
12
13 Octave is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with Octave; see the file COPYING. If not, write to the Free
20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
21
22 */
23
24 #if !defined (_Range_h)
25 #define _Range_h 1
26
27 #ifdef __GNUG__
28 #pragma interface
29 #endif
30
31 #include <iostream.h>
32
33 class Range
34 {
35 public:
36 Range (void);
37 Range (const Range& r);
38 Range (double b, double l);
39 Range (double b, double l, double i);
40
41 double base (void) const;
42 double limit (void) const;
43 double inc (void) const;
44 int nelem (void) const;
45
46 double min (void) const;
47 double max (void) const;
48
49 void set_base (double b);
50 void set_limit (double l);
51 void set_inc (double i);
52
53 friend ostream& operator << (ostream& os, const Range& r);
54 friend istream& operator >> (istream& is, Range& r);
55
56 void print_range (void);
57
58 private:
59 double _base;
60 double _limit;
61 double _inc;
62 int _nelem;
63
64 int nelem_internal (void) const;
65 };
66
67 inline Range::Range (void)
68 { _base = -1; _limit = -1; _inc = -1; _nelem = -1; }
69
70 inline Range::Range (const Range& r)
71 { _base = r._base; _limit = r._limit; _inc = r._inc; _nelem = r._nelem; }
72
73 inline Range::Range (double b, double l)
74 { _base = b; _limit = l; _inc = 1; _nelem = nelem_internal (); }
75
76 inline Range::Range (double b, double l, double i)
77 { _base = b; _limit = l; _inc = i; _nelem = nelem_internal (); }
78
79 inline double Range::base (void) const { return _base; }
80 inline double Range::limit (void) const { return _limit; }
81 inline double Range::inc (void) const { return _inc; }
82 inline int Range::nelem (void) const { return _nelem; }
83
84 inline void Range::set_base (double b) { _base = b; }
85 inline void Range::set_limit (double l) { _limit = l; }
86 inline void Range::set_inc (double i) { _inc = i; }
87
88 // NOTE: max and min only return useful values if nelem > 0.
89
90 inline double Range::min (void) const { return _inc > 0 ? _base : _limit; }
91 inline double Range::max (void) const { return _inc > 0 ? _limit : _base; }
92
93 #endif
94
95 /*
96 ;;; Local Variables: ***
97 ;;; mode: C++ ***
98 ;;; page-delimiter: "^/\\*" ***
99 ;;; End: ***
100 */