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annotate liboctave/lo-ieee.h @ 5103:e2ed74b9bfa0 after-gnuplot-split

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[project @ 2004-12-28 02:43:01 by jwe]
author jwe
date Tue, 28 Dec 2004 02:43:01 +0000
parents ab4e64f92526
children 4c8a2e4e0717
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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
4cb6aaa0f2c7 [project @ 1996-02-17 02:54:24 by jwe]
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23 #if !defined (octave_liboctave_ieee_h)
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24 #define octave_liboctave_ieee_h 1
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26 #ifdef __cplusplus
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27 extern "C" {
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28 #endif
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29
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30 /* Octave's idea of infinity. */
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31 extern double octave_Inf;
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32
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33 /* Octave's idea of a missing value. */
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34 extern double octave_NA;
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35
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36 /* Octave's idea of not a number. */
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37 extern double octave_NaN;
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38
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39 extern int lo_ieee_hw;
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40 extern int lo_ieee_lw;
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41
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42 typedef union
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43 {
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44 double value;
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45 unsigned int word[2];
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46 } lo_ieee_double;
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47
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48 #define LO_IEEE_NA_HW 0x7ff00000
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49 #define LO_IEEE_NA_LW 1954
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50
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51 extern void octave_ieee_init (void);
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53 #if defined (SCO)
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54 extern int isnan (double);
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55 extern int isinf (double);
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56 #endif
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57
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58 extern int lo_ieee_isnan (double x);
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59 extern int lo_ieee_finite (double x);
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60 extern int lo_ieee_isinf (double x);
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61
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62 extern int lo_ieee_is_NA (double);
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63 extern int lo_ieee_is_NaN_or_NA (double);
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64
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65 extern double lo_ieee_inf_value (void);
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66 extern double lo_ieee_na_value (void);
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67 extern double lo_ieee_nan_value (void);
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68
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69 extern int lo_ieee_signbit (double);
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70
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71 #ifdef __cplusplus
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72 }
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73 #endif
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74
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75 #endif
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76
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77 /*
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78 ;;; Local Variables: ***
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79 ;;; mode: C++ ***
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80 ;;; End: ***
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81 */