Request new feature (pow, sqrt) about decimal_for_cpp HOT 1 CLOSED

// In decimal.h:
// after #include <locale>
// add:
#include <cmath>

// just before } // namespace
// add:
template<int prec, typename roundPolicy>
dec::decimal<prec, roundPolicy> sqrt(const dec::decimal<prec, roundPolicy> &arg) {
   dec::decimal<prec, roundPolicy> result(std::sqrt(arg.getAsDouble()));
   return result;
}

// in decimalTest.ipp 
// at the end add:
BOOST_AUTO_TEST_CASE(sqrt)
{
  using namespace std;
  using namespace dec;
  const dec::decimal<4> decValue("4.1234");
  dec::decimal<4> expectedValue("2.0306");
  BOOST_CHECK_EQUAL(dec::sqrt(decValue), expectedValue);
}