libphobos/libdruntime/rt/typeinfo/ti_float.d

   1 /**
   2  * TypeInfo support code.
   3  *
   4  * Copyright: Copyright Digital Mars 2004 - 2009.
   5  * License:   $(WEB www.boost.org/LICENSE_1_0.txt, Boost License 1.0).
   6  * Authors:   Walter Bright
   7  */
   8
   9 /*          Copyright Digital Mars 2004 - 2009.
  10  * Distributed under the Boost Software License, Version 1.0.
  11  *    (See accompanying file LICENSE or copy at
  12  *          http://www.boost.org/LICENSE_1_0.txt)
  13  */
  14 module rt.typeinfo.ti_float;
  15
  16 private import rt.util.typeinfo;
  17
  18 // float
  19
  20 class TypeInfo_f : TypeInfo
  21 {
  22   pure:
  23   nothrow:
  24   @safe:
  25
  26     alias F = float;
  27
  28     override string toString() const { return F.stringof; }
  29
  30     override size_t getHash(in void* p) const @trusted
  31     {
  32         return Floating!F.hashOf(*cast(F*)p);
  33     }
  34
  35     override bool equals(in void* p1, in void* p2) const @trusted
  36     {
  37         return Floating!F.equals(*cast(F*)p1, *cast(F*)p2);
  38     }
  39
  40     override int compare(in void* p1, in void* p2) const @trusted
  41     {
  42         return Floating!F.compare(*cast(F*)p1, *cast(F*)p2);
  43     }
  44
  45     override @property size_t tsize() const
  46     {
  47         return F.sizeof;
  48     }
  49
  50     override void swap(void *p1, void *p2) const @trusted
  51     {
  52         F t = *cast(F*)p1;
  53         *cast(F*)p1 = *cast(F*)p2;
  54         *cast(F*)p2 = t;
  55     }
  56
  57     override const(void)[] initializer() const @trusted
  58     {
  59         static immutable F r;
  60         return (&r)[0 .. 1];
  61     }
  62
  63     version (Windows)
  64     {
  65     }
  66     else version (X86_64)
  67     {
  68         // 2 means arg to function is passed in XMM registers
  69         override @property uint flags() const { return 2; }
  70     }
  71 }