#define SWIG_croak(x)    { SWIG_Error(SWIG_RuntimeError, x); SWIG_fail; }
#define SWIG_contract_assert(expr, msg) if (!(expr)) { SWIG_Error(SWIG_RuntimeError, msg); SWIG_fail; } else
#define SWIG_SetError(str)                              SWIG_Error(SWIG_RuntimeError, str)