view lphobos/typeinfo1/ti_float.d @ 351:f273f5c58a9a trunk

[svn r372] Fixed extern(C++) handling now same as DMD, which is to treat it like extern(C). Fixed a problem in resolving struct types where the size of elements might not yet be known. Switched to using DMD size() instead of LLVM ABI size (TargetData).
author lindquist
date Mon, 14 Jul 2008 03:23:43 +0200
parents 2c3cd3596187
children 373489eeaf90
line wrap: on
line source


// float

module typeinfo1.ti_float;

class TypeInfo_f : TypeInfo
{
    char[] toString() { return "float"; }

    hash_t getHash(void *p)
    {
	return *cast(uint *)p;
    }

    static bool _isnan(float f)
    {
	return f !<>= 0;
    }

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

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

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

    size_t tsize()
    {
	return float.sizeof;
    }

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

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

    void[] init()
    {	static float r;

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