Modules/_math.h

   1 double _Py_expm1(double x);
   2
   3 #ifdef HAVE_EXPM1
   4 #define m_expm1 expm1
   5 #else
   6 /* if the system doesn't have expm1, use the substitute
   7    function defined in Modules/_math.c. */
   8 #define m_expm1 _Py_expm1
   9 #endif