Linear generator

class rls3
{
    private:
    unsigned int s;
    const static int q=63;
    public:
    rls3(unsigned int a=1)
    {
        s=a;
        }
    void sets(unsigned int a)
    {
        s=a;
        }
    unsigned long* step(int a=q)
    {
        if(a<=q)
        {
            unsigned long* r=new unsigned long[1];
            r[0]=0;
            for(int i=0;i<a;i++)
            {
                r[0]+=s&1;
                r[0]=r[0]<<1;
                s+=((s^(s>>3))&1)<<10;
                s=s>>1;
                }
            r[0]=r[0]<<(q-a);
            return r;
            }
        else
        {
            unsigned long* r=new unsigned long[a/q+1];
            for(int i=0;i<a/q;i++)
            {
                r[i]=0;
                }
            for(int i=0;i<a;i++)
            {
                r[i/q]+=s&1;
                r[i/q]=r[i/q]<<1;
                s+=((s^(s>>3))&1)<<10;
                s=s>>1;
                }
            r[a/q]=r[a/q]<<(q-a%q);
            return r;
            }
        }
    };