276 #if !defined(PY_NO_SHORT_FLOAT_REPR) || defined(Py_NAN)
284     return Py_NAN;  in m_nan()
301             return Py_NAN;  /* tgamma(-inf) = nan, invalid */  in m_tgamma()
314             return Py_NAN; /* negative integers n */  in m_tgamma()
604         return Py_NAN;  in m_atan2()
641             return Py_NAN;  in m_remainder()
717         return Py_NAN;  in m_remainder()
741             return Py_NAN; /* log(-ve) = nan */  in m_log()
749         return Py_NAN; /* log(-inf) = nan */  in m_log()
773             return Py_NAN; /* log2(-inf) = nan, invalid-operation */  in m_log2()
804         return Py_NAN; /* log2(-inf) = nan, invalid-operation */  in m_log2()
818             return Py_NAN; /* log10(-ve) = nan */  in m_log10()
826         return Py_NAN; /* log10(-inf) = nan */  in m_log10()
2524         return Py_NAN;  in vector_norm()
3536 #if !defined(PY_NO_SHORT_FLOAT_REPR) || defined(Py_NAN)  in math_exec()