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1 /* |
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3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 2000, 2002, 2004, 2005, |
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4 2006, 2007 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 3 of the License, or (at your |
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11 option) any 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, see |
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20 <http://www.gnu.org/licenses/>. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_Range_h) |
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25 #define octave_Range_h 1 |
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26 |
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27 #include <iostream> |
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28 #include "dMatrix.h" |
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29 |
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30 class |
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31 OCTAVE_API |
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32 Range |
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33 { |
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34 public: |
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35 |
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36 Range (void) |
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37 : rng_base (0), rng_limit (0), rng_inc (0), rng_nelem (0), cache (1, 0) { } |
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38 |
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39 Range (const Range& r) |
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40 : rng_base (r.rng_base), rng_limit (r.rng_limit), rng_inc (r.rng_inc), |
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41 rng_nelem (r.rng_nelem), cache () { } |
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42 |
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43 Range (double b, double l) |
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44 : rng_base (b), rng_limit (l), rng_inc (1), |
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45 rng_nelem (nelem_internal ()), cache () { } |
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46 |
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47 Range (double b, double l, double i) |
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48 : rng_base (b), rng_limit (l), rng_inc (i), |
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49 rng_nelem (nelem_internal ()), cache () { } |
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50 |
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51 double base (void) const { return rng_base; } |
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52 double limit (void) const { return rng_limit; } |
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53 double inc (void) const { return rng_inc; } |
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54 octave_idx_type nelem (void) const { return rng_nelem; } |
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55 |
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56 bool all_elements_are_ints (void) const; |
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57 |
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58 Matrix matrix_value (void) const; |
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59 |
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60 double min (void) const; |
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61 double max (void) const; |
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62 |
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63 void sort (void); |
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64 |
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65 void set_base (double b) |
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66 { |
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67 if (rng_base != b) |
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68 { |
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69 rng_base = b; |
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70 clear_cache (); |
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71 } |
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72 } |
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73 |
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74 void set_limit (double l) |
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75 { |
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76 if (rng_limit != l) |
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77 { |
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78 rng_limit = l; |
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79 clear_cache (); |
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80 } |
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81 } |
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82 |
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83 void set_inc (double i) |
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84 { |
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85 if (rng_inc != i) |
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86 { |
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87 rng_inc = i; |
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88 clear_cache (); |
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89 } |
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90 } |
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91 |
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92 friend OCTAVE_API std::ostream& operator << (std::ostream& os, const Range& r); |
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93 friend OCTAVE_API std::istream& operator >> (std::istream& is, Range& r); |
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94 |
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95 void print_range (void); |
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96 |
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97 private: |
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98 |
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99 double rng_base; |
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100 double rng_limit; |
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101 double rng_inc; |
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102 |
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103 octave_idx_type rng_nelem; |
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104 |
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105 mutable Matrix cache; |
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106 |
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107 octave_idx_type nelem_internal (void) const; |
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108 |
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109 void clear_cache (void) const { cache.resize (0, 0); } |
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110 }; |
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111 |
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112 extern OCTAVE_API Range operator - (const Range& r); |
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113 |
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114 #endif |
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115 |
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116 /* |
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117 ;;; Local Variables: *** |
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118 ;;; mode: C++ *** |
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119 ;;; End: *** |
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120 */ |
