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1 //=========================================================================== |
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2 // |
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3 // infconst.c |
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4 // |
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5 // Infinity constant |
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6 // |
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7 //=========================================================================== |
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8 //####COPYRIGHTBEGIN#### |
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9 // |
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10 // ------------------------------------------- |
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11 // The contents of this file are subject to the Cygnus eCos Public License |
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12 // Version 1.0 (the "License"); you may not use this file except in |
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13 // compliance with the License. You may obtain a copy of the License at |
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14 // http://sourceware.cygnus.com/ecos |
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15 // |
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16 // Software distributed under the License is distributed on an "AS IS" |
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
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18 // License for the specific language governing rights and limitations under |
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19 // the License. |
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20 // |
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21 // The Original Code is eCos - Embedded Cygnus Operating System, released |
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22 // September 30, 1998. |
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23 // |
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24 // The Initial Developer of the Original Code is Cygnus. Portions created |
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25 // by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved. |
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26 // ------------------------------------------- |
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27 // |
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28 //####COPYRIGHTEND#### |
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29 //=========================================================================== |
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30 //#####DESCRIPTIONBEGIN#### |
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31 // |
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32 // Author(s): jlarmour |
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33 // Contributors: jlarmour |
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34 // Date: 1998-02-13 |
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35 // Purpose: |
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36 // Description: Defines a constant cyg_libm_infinity so that we can define |
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37 // HUGE_VAL |
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38 // Usage: |
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39 // |
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40 //####DESCRIPTIONEND#### |
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41 // |
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42 //=========================================================================== |
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43 |
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44 // CONFIGURATION |
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45 |
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46 #include <pkgconf/libm.h> // Configuration header |
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47 |
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48 // Include the Math library? |
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49 #ifdef CYGPKG_LIBM |
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50 |
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51 // INCLUDES |
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52 |
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53 #include <cyg/infra/cyg_type.h> // Common type definitions and support |
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54 // including endian-ness |
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55 #include <math.h> // Main header for math library |
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56 #include <sys/ieeefp.h> // Cyg_libm_ieee_double_shape_type |
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57 |
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58 |
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59 // GLOBALS |
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60 |
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61 #if (CYG_BYTEORDER == CYG_MSBFIRST) // Big endian |
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62 |
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63 const Cyg_libm_ieee_double_shape_type cyg_libm_infinity = { {0x7ff00000, 0} }; |
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64 |
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65 #else // Little endian |
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66 |
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67 const Cyg_libm_ieee_double_shape_type cyg_libm_infinity = { {0, 0x7ff00000} }; |
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68 |
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69 #endif |
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70 |
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71 #endif // ifdef CYGPKG_LIBM |
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72 |
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73 // EOF infconst.c |
