code.delx.au - gnu-emacs/blob - test/etags/cp-src/Range.h

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