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1 /* |
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2 |
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3 Copyright (C) 1996, 1997, 2000, 2003, 2004, 2005, 2006, 2007 |
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4 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 3 of the License, or (at your |
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11 option) any 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, see |
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20 <http://www.gnu.org/licenses/>. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_mach_info_h) |
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25 #define octave_mach_info_h 1 |
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26 |
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27 #include <string> |
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28 |
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29 class |
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30 OCTAVE_API |
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31 oct_mach_info |
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32 { |
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33 protected: |
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34 |
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35 oct_mach_info (void); |
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36 |
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37 public: |
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38 |
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39 enum float_format |
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40 { |
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41 flt_fmt_unknown, |
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42 flt_fmt_ieee_little_endian, |
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43 flt_fmt_ieee_big_endian, |
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44 flt_fmt_vax_d, |
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45 flt_fmt_vax_g, |
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46 flt_fmt_cray |
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47 }; |
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48 |
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49 static bool instance_ok (void); |
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50 |
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51 static float_format native_float_format (void); |
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52 |
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53 static bool words_big_endian (void); |
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54 |
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55 static bool words_little_endian (void); |
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56 |
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57 static float_format string_to_float_format (const std::string&); |
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58 |
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59 static std::string float_format_as_string (float_format); |
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60 |
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61 private: |
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62 |
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63 static oct_mach_info *instance; |
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64 |
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65 void init_float_format (void) const; |
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66 |
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67 void ten_little_endians (void) const; |
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68 |
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69 // The floating point format for the current machine. |
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70 mutable float_format native_float_fmt; |
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71 |
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72 // TRUE if the byte order on this system is big endian. |
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73 mutable bool big_chief; |
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74 |
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75 // No copying! |
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76 |
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77 oct_mach_info (const oct_mach_info&); |
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78 |
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79 oct_mach_info& operator = (const oct_mach_info&); |
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80 }; |
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81 |
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82 #endif |
