view lphobos/typeinfo1/ti_real.d @ 1064:f0b6549055ab

Make LDC work with LLVM trunk (s/LinkOnceLinkage/LinkOnceOdrLinkage/) Also moved the #defines for linkage types into a separate header instead of mars.h so we can #include revisions.h without having to rebuild the entire frontend every time we update. (I'm using revisions.h to get the LLVM revision for use in preprocessor conditionals. It should work with LLVM release 2.5, old trunk and new trunk)
author Frits van Bommel <fvbommel wxs.nl>
date Sun, 08 Mar 2009 16:13:10 +0100
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];
    }
}