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