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2 // double
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3
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4 module std.typeinfo.ti_double;
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5
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6 private import std.math;
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7
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8 class TypeInfo_d : TypeInfo
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9 {
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10 char[] toString() { return "double"; }
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11
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12 hash_t getHash(void *p)
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13 {
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14 return (cast(uint *)p)[0] + (cast(uint *)p)[1];
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15 }
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16
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17 static int _equals(double f1, double f2)
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18 {
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19 return f1 == f2 ||
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20 (isnan(f1) && isnan(f2));
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21 }
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22
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23 static int _compare(double d1, double d2)
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24 {
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25 if (d1 !<>= d2) // if either are NaN
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26 {
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27 if (isnan(d1))
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28 { if (isnan(d2))
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29 return 0;
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30 return -1;
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31 }
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32 return 1;
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33 }
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34 return (d1 == d2) ? 0 : ((d1 < d2) ? -1 : 1);
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35 }
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36
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37 int equals(void *p1, void *p2)
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38 {
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39 return _equals(*cast(double *)p1, *cast(double *)p2);
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40 }
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41
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42 int compare(void *p1, void *p2)
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43 {
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44 return _compare(*cast(double *)p1, *cast(double *)p2);
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45 }
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46
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47 size_t tsize()
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48 {
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49 return double.sizeof;
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50 }
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51
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52 void swap(void *p1, void *p2)
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53 {
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54 double t;
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55
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56 t = *cast(double *)p1;
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57 *cast(double *)p1 = *cast(double *)p2;
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58 *cast(double *)p2 = t;
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59 }
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60
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61 void[] init()
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62 { static double r;
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63
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64 return (cast(double *)&r)[0 .. 1];
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65 }
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66 }
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67
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