extern double double_approx (const cl_DF& x);
-#ifdef WANT_OBFUSCATING_OPERATORS
// This could be optimized to use in-place operations.
inline cl_DF& operator+= (cl_DF& x, const cl_DF& y) { return x = x + y; }
inline cl_DF& operator+= (cl_DF& x, const double y) { return x = x + y; }
inline cl_DF& operator*= (cl_DF& x, const double y) { return x = x * y; }
inline cl_DF& operator/= (cl_DF& x, const cl_DF& y) { return x = x / y; }
inline cl_DF& operator/= (cl_DF& x, const double y) { return x = x / y; }
-#endif
/* */