view lphobos/typeinfo1/ti_double.d @ 132:1700239cab2e trunk

[svn r136] MAJOR UNSTABLE UPDATE!!! Initial commit after moving to Tango instead of Phobos. Lots of bugfixes... This build is not suitable for most things.
author lindquist
date Fri, 11 Jan 2008 17:57:40 +0100
parents 2c3cd3596187
children
line wrap: on
line source


// double

module typeinfo1.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];
    }
}