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1 /* |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_Range_h) |
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24 #define octave_Range_h 1 |
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25 |
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26 #include <iostream> |
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27 #include "dMatrix.h" |
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28 |
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29 class |
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30 Range |
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31 { |
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32 public: |
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33 |
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34 Range (void) |
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35 : rng_base (-1), rng_limit (-1), rng_inc (-1), rng_nelem (-1), cache () { } |
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36 |
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37 Range (const Range& r) |
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38 : rng_base (r.rng_base), rng_limit (r.rng_limit), rng_inc (r.rng_inc), |
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39 rng_nelem (r.rng_nelem), cache () { } |
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40 |
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41 Range (double b, double l) |
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42 : rng_base (b), rng_limit (l), rng_inc (1), |
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43 rng_nelem (nelem_internal ()), cache () { } |
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44 |
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45 Range (double b, double l, double i) |
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46 : rng_base (b), rng_limit (l), rng_inc (i), |
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47 rng_nelem (nelem_internal ()), cache () { } |
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48 |
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49 double base (void) const { return rng_base; } |
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50 double limit (void) const { return rng_limit; } |
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51 double inc (void) const { return rng_inc; } |
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52 int nelem (void) const { return rng_nelem; } |
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53 |
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54 bool all_elements_are_ints (void) const; |
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55 |
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56 Matrix matrix_value (void) const; |
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57 |
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58 double min (void) const; |
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59 double max (void) const; |
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60 |
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61 void sort (void); |
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62 |
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63 void set_base (double b) |
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64 { |
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65 if (rng_base != b) |
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66 { |
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67 rng_base = b; |
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68 clear_cache (); |
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69 } |
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70 } |
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71 |
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72 void set_limit (double l) |
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73 { |
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74 if (rng_limit != l) |
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75 { |
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76 rng_limit = l; |
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77 clear_cache (); |
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78 } |
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79 } |
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80 |
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81 void set_inc (double i) |
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82 { |
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83 if (rng_inc != i) |
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84 { |
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85 rng_inc = i; |
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86 clear_cache (); |
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87 } |
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88 } |
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89 |
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90 friend std::ostream& operator << (std::ostream& os, const Range& r); |
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91 friend std::istream& operator >> (std::istream& is, Range& r); |
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92 |
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93 void print_range (void); |
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94 |
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95 private: |
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96 |
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97 double rng_base; |
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98 double rng_limit; |
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99 double rng_inc; |
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100 |
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101 int rng_nelem; |
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102 |
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103 mutable Matrix cache; |
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104 |
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105 int nelem_internal (void) const; |
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106 |
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107 void clear_cache (void) const { cache.resize (0, 0); } |
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108 }; |
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109 |
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110 extern Range operator - (const Range& r); |
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111 |
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112 #endif |
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113 |
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114 /* |
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115 ;;; Local Variables: *** |
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116 ;;; mode: C++ *** |
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117 ;;; End: *** |
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118 */ |
