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annotate lphobos/typeinfo/ti_float.d @ 53:06ccc817acd4 trunk

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[svn r57] Added most basic TypeInfo (rebuild lphobos). Fixed some SymOffExp bugs. Added another typeinfo test case.
author lindquist
date Tue, 23 Oct 2007 07:16:02 +0200
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53
06ccc817acd4 [svn r57] Added most basic TypeInfo (rebuild lphobos).
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1
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2 // float
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3
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4 module typeinfo.ti_float;
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5
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6 class TypeInfo_f : TypeInfo
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7 {
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8 char[] toString() { return "float"; }
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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;
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13 }
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14
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15 static bool _isnan(float f)
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16 {
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17 return f !<>= 0;
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18 }
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19
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20 static int _equals(float f1, float 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(float d1, float 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(float *)p1, *cast(float *)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(float *)p1, *cast(float *)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 float.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 float t;
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58
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59 t = *cast(float *)p1;
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60 *cast(float *)p1 = *cast(float *)p2;
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61 *cast(float *)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 float 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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