#define INV_RAND_MAX (1.0f / float(0x7fff))

class CRandGen
{
public:
    CRandGen() : m_seed(1L) {}  

    CRandGen( unsigned int seed ) : m_seed(seed) {}  

    void Init( unsigned int seed )  { m_seed = seed; }
        
    float RandFloat() { return float(RandInt()) * INV_RAND_MAX; }

    int RandInt()
    {
        m_seed = m_seed * 214013L + 2531011L;
        return((m_seed >> 16) & 0x7fff);
    }

private:
    unsigned long  m_seed;
};

void test(float x, float y, float z)
{
    std::cout<<x<<"\n"<<y<<"\n"<<z<<"\n";
}
int main()
{
    float k=123;
    CRandGen m_randGen;
    test((m_randGen.RandFloat() - 0.5f)*k
        ,(m_randGen.RandFloat() - 0.5f)*k
        ,(m_randGen.RandFloat() - 0.5f)*k 
        );
    test((m_randGen.RandFloat() - 0.5f)*k
        ,(m_randGen.RandFloat() - 0.5f)*k
        ,(m_randGen.RandFloat() - 0.5f)*k 
        );
    test((m_randGen.RandFloat() - 0.5f)*k
        ,(m_randGen.RandFloat() - 0.5f)*k
        ,(m_randGen.RandFloat() - 0.5f)*k 
        );
    return 0;
}