if (!(x != inf)) FAILURE ("!=", "NaN")
if (!(x != m_inf)) FAILURE ("!=", "NaN")
if (!(two != x)) FAILURE ("!=", "NaN")
if (!(zero != x)) FAILURE ("!=", "NaN")
if (!(m_one != x)) FAILURE ("!=", "NaN")
if (!(x != inf)) FAILURE ("!=", "NaN")
if (!(x != m_inf)) FAILURE ("!=", "NaN")
if (!(two != x)) FAILURE ("!=", "NaN")
if (!(zero != x)) FAILURE ("!=", "NaN")
if (!(m_one != x)) FAILURE ("!=", "NaN")