Erf causes error in Visual C++ about adept HOT 3 CLOSED

#define ADEPT_DEFINE_UNARY_FUNCTION_BOOST(OP,FUNC,DERIVATIVE)       \
  namespace adept {                     \
    template <class A>                      \
    struct OP : public Expression<OP<A> > {         \
      OP(const Expression<A>& a)                \
    : a_(a.cast()), result_(boost::math::FUNC(a_.value())) { }      \
      void calc_gradient(Stack& stack) const {          \
    a_.calc_gradient(stack, DERIVATIVE);            \
      }                             \
      void calc_gradient(Stack& stack,              \
             const Real& multiplier) const {    \
    a_.calc_gradient(stack, (DERIVATIVE)*multiplier);   \
      }                             \
      ADEPT_VALUE_RETURN_TYPE value() const {           \
    return result_;                     \
      }                             \
    private:                            \
    const A& a_;                        \
    Real result_;                       \
    };                              \
  }                             \
  template <class A>                        \
  inline                            \
  adept:: OP<A> FUNC(const adept::Expression<A>& a) {       \
    return adept:: OP<A>(a.cast());             \
  }