view lphobos/typeinfo1/ti_float.d @ 883:b52d5de7783f

GC defines and linkage changes.
author Christian Kamm <kamm incasoftware de>
date Thu, 08 Jan 2009 18:20:02 +0100
parents 373489eeaf90
children
line wrap: on
line source

// float

module typeinfo1.ti_float;

import std.gc: malloc;
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()
    {
	return (cast(float*)malloc(float.sizeof))[0..1];
    }
}