Fast Functions

// ( c ) 2005 Andrew Cross

static int int_max(int a, int b) 
{
    b = a-b;
    a -= b & (b>>31);
    return a;
}

static int int_min(int a, int b) 
{
    b = b-a;
    a += b & (b>>31);
    return a;
}

static int int_abs(int a) 
{
    return a - ((a+a) & (a>>31));
}

ULONG fsqrt(register ULONG r)
{
    register ULONG t,b,c=0;
	
    for (b=0x10000000;b!=0;b>>=2) 
    {
        t=c+b;
        c>>=1;
        if (t<=r)
        {
            r-=t;
            c+=b;
        }
    }
    return(c);
}