27 #ifndef INPUT_OUTPUT_H_ 28 #define INPUT_OUTPUT_H_ 39 template<
typename Derived>
69 template<
typename InputIterator>
72 const std::string& separator,
73 const std::string& start =
"[",
74 const std::string& end =
"]")
77 first, last, separator, start, end);
90 template<
typename Container>
92 const Container& c,
const std::string& separator,
93 const std::string& start =
"[",
const std::string& end =
"]",
97 std::begin(c), std::end(c), separator, start, end);
110 template<
typename Po
interType>
112 const std::string& separator,
113 const std::string& start =
"[",
114 const std::string& end =
"]")
127 template<
typename Derived>
128 void save(
const Eigen::MatrixBase<Derived>& A,
const std::string& fname)
139 fout.open(fname, std::ios::out | std::ios::binary);
143 throw std::runtime_error(
144 "qpp::save(): Error writing output file \"" 145 + std::string(fname) +
"\"!");
150 const std::string header_ =
"TYPE::Eigen::Matrix";
151 fout.write(header_.c_str(), header_.length());
153 idx rows =
static_cast<idx>(rA.rows());
154 idx cols =
static_cast<idx>(rA.cols());
155 fout.write(reinterpret_cast<const char*>(&rows),
sizeof(rows));
156 fout.write(reinterpret_cast<const char*>(&cols),
sizeof(cols));
158 fout.write(reinterpret_cast<const char*>(rA.data()),
159 sizeof(
typename Derived::Scalar) * rows * cols);
181 template<
typename Derived>
185 fin.open(fname, std::ios::in | std::ios::binary);
191 throw std::runtime_error(
"qpp::load(): Error opening input file \"" 192 + std::string(fname) +
"\"!");
195 const std::string header_ =
"TYPE::Eigen::Matrix";
196 std::unique_ptr<char[]> fheader_{
new char[header_.length()]};
199 fin.read(fheader_.get(), header_.length());
200 if (std::string(fheader_.get(), header_.length()) != header_)
202 throw std::runtime_error(
203 "qpp::load(): Input file \"" + std::string(fname)
204 +
"\" is corrupted!");
209 fin.read(reinterpret_cast<char*>(&rows),
sizeof(rows));
210 fin.read(reinterpret_cast<char*>(&cols),
sizeof(cols));
214 fin.read(reinterpret_cast<char*>(A.data()),
215 sizeof(
typename Derived::Scalar) * rows * cols);
bool check_nonzero_size(const T &x) noexcept
Definition: util.h:129
constexpr double chop
Used in qpp::disp() for setting to zero numbers that have their absolute value smaller than qpp::chop...
Definition: constants.h:56
Eigen::Matrix< Scalar, Eigen::Dynamic, Eigen::Dynamic > dyn_mat
Dynamic Eigen matrix over the field specified by Scalar.
Definition: types.h:77
Quantum++ main namespace.
Definition: codes.h:30
Checks whether T is compatible with an STL-like iterable container.
Definition: traits.h:63
Definition: iomanip.h:128
std::complex< double > cplx
Complex number in double precision.
Definition: types.h:45
dyn_mat< typename Derived::Scalar > load(const std::string &fname)
Loads Eigen matrix from a binary file (internal format) in double precision.
Definition: input_output.h:182
void save(const Eigen::MatrixBase< Derived > &A, const std::string &fname)
Saves Eigen expression to a binary file (internal format) in double precision.
Definition: input_output.h:128
std::size_t idx
Non-negative integer index.
Definition: types.h:35
internal::IOManipEigen disp(const Eigen::MatrixBase< Derived > &A, double chop=qpp::chop)
Eigen expression ostream manipulator.
Definition: input_output.h:40
Object has zero size exception.
Definition: exception.h:134