Mercurial > projects > ldc
annotate lphobos/typeinfo1/ti_double.d @ 672:22b6947fd30c
Automated merge with http://hg.dsource.org/projects/llvmdc
author | Christian Kamm <kamm incasoftware de> |
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date | Wed, 08 Oct 2008 22:43:38 +0200 |
parents | 2c3cd3596187 |
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1 |
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2 // double |
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4 module typeinfo1.ti_double; |
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5 |
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6 class TypeInfo_d : TypeInfo |
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7 { |
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8 char[] toString() { return "double"; } |
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9 |
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10 hash_t getHash(void *p) |
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11 { |
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12 return (cast(uint *)p)[0] + (cast(uint *)p)[1]; |
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13 } |
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14 |
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15 static bool _isnan(double d) |
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16 { |
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17 return d !<>= 0; |
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18 } |
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19 |
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20 static int _equals(double f1, double f2) |
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21 { |
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22 return f1 == f2 || |
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23 (_isnan(f1) && _isnan(f2)); |
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24 } |
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25 |
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26 static int _compare(double d1, double d2) |
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27 { |
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28 if (d1 !<>= d2) // if either are NaN |
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29 { |
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30 if (_isnan(d1)) |
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31 { if (_isnan(d2)) |
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32 return 0; |
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33 return -1; |
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34 } |
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35 return 1; |
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36 } |
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37 return (d1 == d2) ? 0 : ((d1 < d2) ? -1 : 1); |
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38 } |
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39 |
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40 int equals(void *p1, void *p2) |
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41 { |
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42 return _equals(*cast(double *)p1, *cast(double *)p2); |
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43 } |
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44 |
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45 int compare(void *p1, void *p2) |
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46 { |
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47 return _compare(*cast(double *)p1, *cast(double *)p2); |
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48 } |
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49 |
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50 size_t tsize() |
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51 { |
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52 return double.sizeof; |
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53 } |
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54 |
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55 void swap(void *p1, void *p2) |
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56 { |
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57 double t; |
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58 |
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59 t = *cast(double *)p1; |
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60 *cast(double *)p1 = *cast(double *)p2; |
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61 *cast(double *)p2 = t; |
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62 } |
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63 |
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64 void[] init() |
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65 { static double r; |
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66 |
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67 return (&r)[0 .. 1]; |
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68 } |
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69 } |
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70 |