int m_w = 123;    /* must not be zero */
int m_z = 234;    /* must not be zero */
int get_random(){
	m_z = 36969 * (m_z & 65535) + (m_z >> 16);
	m_w = 18000 * (m_w & 65535) + (m_w >> 16);
	return (m_z << 16) + m_w;  /* 32-bit result */
}