Function double_to_string

Core/Utilities/Tools/QStatMatrix.cpp:361–367

}

static std::string double_to_string(const double d, const int precision = 15)
{
	std::ostringstream stream;
	stream.precision(precision);
	stream << d;
	return stream.str();
}

string QPanda::matrix_to_string(const QStat& mat, const int precision /*= 15*/)
{