return atan(ex_to<numeric>(y), ex_to<numeric>(x));
// atan(real, real) -> atan(y/x) +/- Pi
if (y.info(info_flags::real) && x.info(info_flags::real)) {
if (x.info(info_flags::positive))
return atan(y/x);
return atan(ex_to<numeric>(y), ex_to<numeric>(x));
// atan(real, real) -> atan(y/x) +/- Pi
if (y.info(info_flags::real) && x.info(info_flags::real)) {
if (x.info(info_flags::positive))
return atan(y/x);