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1 // utils.cc -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1996 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 <climits> |
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29 |
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30 #include "lo-mappers.h" |
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31 #include "lo-utils.h" |
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32 |
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33 // Convert X to the nearest integer value. Should not pass NaN to |
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34 // this function. |
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35 |
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36 int |
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37 NINT (double x) |
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38 { |
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39 if (x > INT_MAX) |
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40 return INT_MAX; |
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41 else if (x < INT_MIN) |
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42 return INT_MIN; |
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43 else |
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44 return (x > 0) ? ((int) (x + 0.5)) : ((int) (x - 0.5)); |
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45 } |
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46 |
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47 double |
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48 D_NINT (double x) |
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49 { |
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50 if (xisinf (x) || xisnan (x)) |
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51 return x; |
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52 else |
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53 return floor (x + 0.5); |
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54 } |
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55 |
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56 /* |
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57 ;;; Local Variables: *** |
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58 ;;; mode: C++ *** |
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59 ;;; page-delimiter: "^/\\*" *** |
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60 ;;; End: *** |
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61 */ |
