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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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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 oct_mach_info |
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31 { |
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32 protected: |
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33 |
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34 oct_mach_info (void); |
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35 |
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36 public: |
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37 |
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38 enum float_format |
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39 { |
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40 flt_fmt_unknown, |
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41 flt_fmt_ieee_little_endian, |
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42 flt_fmt_ieee_big_endian, |
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43 flt_fmt_vax_d, |
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44 flt_fmt_vax_g, |
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45 flt_fmt_cray |
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46 }; |
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47 |
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48 static bool instance_ok (void); |
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49 |
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50 static float_format native_float_format (void); |
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51 |
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52 static bool words_big_endian (void); |
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53 |
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54 static bool words_little_endian (void); |
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55 |
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56 static float_format string_to_float_format (const std::string&); |
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57 |
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58 static std::string float_format_as_string (float_format); |
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59 |
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60 private: |
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61 |
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62 static oct_mach_info *instance; |
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63 |
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64 void init_float_format (void) const; |
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65 |
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66 void ten_little_endians (void) const; |
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67 |
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68 // The floating point format for the current machine. |
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69 mutable float_format native_float_fmt; |
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70 |
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71 // TRUE if the byte order on this system is big endian. |
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72 mutable bool big_chief; |
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73 |
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74 // No copying! |
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75 |
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76 oct_mach_info (const oct_mach_info&); |
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77 |
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78 oct_mach_info& operator = (const oct_mach_info&); |
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79 }; |
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80 |
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81 #endif |
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82 |
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83 /* |
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84 ;;; Local Variables: *** |
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85 ;;; mode: C++ *** |
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86 ;;; End: *** |
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87 */ |
