view lphobos/typeinfo1/ti_real.d @ 1650:40bd4a0d4870

Update to work with LLVM 2.7. Removed use of dyn_cast, llvm no compiles without exceptions and rtti by default. We do need exceptions for the libconfig stuff, but rtti isn't necessary (anymore). Debug info needs to be rewritten, as in LLVM 2.7 the format has completely changed. To have something to look at while rewriting, the old code has been wrapped inside #ifndef DISABLE_DEBUG_INFO , this means that you have to define this to compile at the moment. Updated tango 0.99.9 patch to include updated EH runtime code, which is needed for LLVM 2.7 as well.
author Tomas Lindquist Olsen
date Wed, 19 May 2010 12:42:32 +0200
parents 2c3cd3596187
children
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// real

module typeinfo1.ti_real;

class TypeInfo_e : TypeInfo
{
    char[] toString() { return "real"; }

    hash_t getHash(void *p)
    {
	return (cast(uint *)p)[0] + (cast(uint *)p)[1] + (cast(ushort *)p)[4];
    }

    static bool _isnan(real r)
    {
	return r !<>= 0;
    }

    static int _equals(real f1, real f2)
    {
	return f1 == f2 ||
		(_isnan(f1) && _isnan(f2));
    }

    static int _compare(real d1, real 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(real *)p1, *cast(real *)p2);
    }

    int compare(void *p1, void *p2)
    {
	return _compare(*cast(real *)p1, *cast(real *)p2);
    }

    size_t tsize()
    {
	return real.sizeof;
    }

    void swap(void *p1, void *p2)
    {
	real t;

	t = *cast(real *)p1;
	*cast(real *)p1 = *cast(real *)p2;
	*cast(real *)p2 = t;
    }

    void[] init()
    {	static real r;

	return (&r)[0 .. 1];
    }
}