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annotate druntime/src/compiler/dmd/typeinfo/ti_float.d @ 1458:e0b2d67cfe7c

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Added druntime (this should be removed once it works).
author Robert Clipsham <robert@octarineparrot.com>
date Tue, 02 Jun 2009 17:43:06 +0100
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1458
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1 /**
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2 * TypeInfo support code.
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3 *
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4 * Copyright: Copyright Digital Mars 2004 - 2009.
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5 * License: <a href="http://www.boost.org/LICENSE_1_0.txt>Boost License 1.0</a>.
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6 * Authors: Walter Bright
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7 *
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8 * Copyright Digital Mars 2004 - 2009.
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9 * Distributed under the Boost Software License, Version 1.0.
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10 * (See accompanying file LICENSE_1_0.txt or copy at
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11 * http://www.boost.org/LICENSE_1_0.txt)
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12 */
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13 module rt.typeinfo.ti_float;
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14
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15 // float
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16
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17 class TypeInfo_f : TypeInfo
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18 {
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19 override string toString() { return "float"; }
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20
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21 override hash_t getHash(in void* p)
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22 {
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23 return *cast(uint *)p;
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24 }
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25
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26 static equals_t _equals(float f1, float f2)
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27 {
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28 return f1 == f2 ||
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29 (f1 !<>= f1 && f2 !<>= f2);
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30 }
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31
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32 static int _compare(float d1, float d2)
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33 {
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34 if (d1 !<>= d2) // if either are NaN
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35 {
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36 if (d1 !<>= d1)
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37 { if (d2 !<>= d2)
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38 return 0;
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39 return -1;
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40 }
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41 return 1;
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42 }
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43 return (d1 == d2) ? 0 : ((d1 < d2) ? -1 : 1);
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44 }
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45
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46 override equals_t equals(in void* p1, in void* p2)
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47 {
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48 return _equals(*cast(float *)p1, *cast(float *)p2);
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49 }
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50
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51 override int compare(in void* p1, in void* p2)
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52 {
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53 return _compare(*cast(float *)p1, *cast(float *)p2);
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54 }
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55
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56 override size_t tsize()
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57 {
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58 return float.sizeof;
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59 }
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60
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61 override void swap(void *p1, void *p2)
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62 {
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63 float t;
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64
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65 t = *cast(float *)p1;
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66 *cast(float *)p1 = *cast(float *)p2;
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67 *cast(float *)p2 = t;
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68 }
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69
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70 override void[] init()
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71 { static immutable float r;
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72
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73 return (cast(float *)&r)[0 .. 1];
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74 }
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75 }