view lphobos/typeinfo1/ti_float.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 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];
    }
}