Mercurial > projects > ldc
diff lphobos/typeinfo/ti_double.d @ 53:06ccc817acd4 trunk
[svn r57] Added most basic TypeInfo (rebuild lphobos).
Fixed some SymOffExp bugs.
Added another typeinfo test case.
author | lindquist |
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date | Tue, 23 Oct 2007 07:16:02 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lphobos/typeinfo/ti_double.d Tue Oct 23 07:16:02 2007 +0200 @@ -0,0 +1,70 @@ + +// double + +module typeinfo.ti_double; + +class TypeInfo_d : TypeInfo +{ + char[] toString() { return "double"; } + + hash_t getHash(void *p) + { + return (cast(uint *)p)[0] + (cast(uint *)p)[1]; + } + + static bool _isnan(double d) + { + return d !<>= 0; + } + + static int _equals(double f1, double f2) + { + return f1 == f2 || + (_isnan(f1) && _isnan(f2)); + } + + static int _compare(double d1, double d2) + { + if (d1 !<>= d2) // if either are NaN + { + if (_isnan(d1)) + { if (_isnan(d2)) + return 0; + return -1; + } + return 1; + } + return (d1 == d2) ? 0 : ((d1 < d2) ? -1 : 1); + } + + int equals(void *p1, void *p2) + { + return _equals(*cast(double *)p1, *cast(double *)p2); + } + + int compare(void *p1, void *p2) + { + return _compare(*cast(double *)p1, *cast(double *)p2); + } + + size_t tsize() + { + return double.sizeof; + } + + void swap(void *p1, void *p2) + { + double t; + + t = *cast(double *)p1; + *cast(double *)p1 = *cast(double *)p2; + *cast(double *)p2 = t; + } + + void[] init() + { static double r; + + return (&r)[0 .. 1]; + } +} +