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1 /* |
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2 |
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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_DET_h) |
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24 #define octave_DET_h 1 |
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25 |
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26 #if defined (__GNUG__) |
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27 #pragma interface |
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28 #endif |
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29 |
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30 #include <iostream> |
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31 |
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32 class |
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33 DET |
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34 { |
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35 friend class Matrix; |
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36 |
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37 public: |
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38 |
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39 DET (void) { } |
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40 |
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41 DET (const DET& a) |
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42 { |
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43 det[0] = a.det[0]; |
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44 det[1] = a.det[1]; |
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45 } |
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46 |
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47 DET& operator = (const DET& a) |
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48 { |
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49 if (this != &a) |
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50 { |
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51 det[0] = a.det[0]; |
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52 det[1] = a.det[1]; |
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53 } |
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54 return *this; |
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55 } |
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56 |
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57 int value_will_overflow (void) const; |
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58 int value_will_underflow (void) const; |
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59 |
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60 double coefficient (void) const; |
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61 |
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62 int exponent (void) const; |
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63 |
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64 double value (void) const; |
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65 |
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66 friend std::ostream& operator << (std::ostream& os, const DET& a); |
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67 |
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68 private: |
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69 |
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70 DET (const double *d) |
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71 { |
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72 det[0] = d[0]; |
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73 det[1] = d[1]; |
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74 } |
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75 |
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76 double det [2]; |
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77 }; |
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78 |
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79 #endif |
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80 |
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81 /* |
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82 ;;; Local Variables: *** |
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83 ;;; mode: C++ *** |
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84 ;;; End: *** |
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85 */ |
