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1 // -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993, 1994, 1995 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 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include <math.h> |
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29 #include <float.h> |
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30 |
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31 #include <Complex.h> |
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32 |
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33 #include "CmplxDET.h" |
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34 |
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35 int |
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36 ComplexDET::value_will_overflow (void) const |
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37 { |
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38 return det[2].real () + 1 > log10 (DBL_MAX) ? 1 : 0; |
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39 } |
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40 |
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41 int |
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42 ComplexDET::value_will_underflow (void) const |
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43 { |
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44 return det[2].real () - 1 < log10 (DBL_MIN) ? 1 : 0; |
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45 } |
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46 |
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47 Complex |
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48 ComplexDET::coefficient (void) const |
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49 { |
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50 return det[0]; |
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51 } |
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52 |
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53 int |
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54 ComplexDET::exponent (void) const |
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55 { |
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56 return (int) (det[1].real ()); |
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57 } |
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58 |
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59 Complex |
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60 ComplexDET::value (void) const |
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61 { |
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62 return det[0] * pow (10.0, det[1].real ()); |
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63 } |
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64 |
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65 /* |
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66 ;;; Local Variables: *** |
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67 ;;; mode: C++ *** |
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68 ;;; page-delimiter: "^/\\*" *** |
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69 ;;; End: *** |
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70 */ |
