view lphobos/typeinfo1/ti_real.d @ 1170:e40c65bd8c5d

Allow specific optimization passes to be requested from the command line. Now you can run "`ldc test.d -c -mem2reg -simplifycfg`" if you feel the urge. The -O<N> options are still supported, and are inserted in the passes list in the position where they appear on the command line. (so -simplifycfg -O1 -instcombine does the "right thing") One small change: -inline is renamed to -enable-inlining due to a naming conflict with the option to add the -inline pass. -inline now inserts the inlining pass in the position specified, not in the middle of -O<N>. (ldmd has been updated to translate -inline to -enable-inlining)
author Frits van Bommel <fvbommel wxs.nl>
date Sun, 29 Mar 2009 15:46:55 +0200
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];
    }
}