Readout Functions

The data can be printed with std::cout:

template<class T>
std::ostream &operator<<(std::ostream &stream, const danceq::internal::Vector<T> vector)

std::ofstream for the Vector class.

The function compatible with MPI. It has to be called by all processes.

Usage:

std::cout << vector: << vector << std::endl;

Parameters:

• stream – std::ofstream

• vector – Output vector

Returns:

std::ostream&

int32_t danceq::internal::Vector::print(void) const

Prints the vector.

Returns:

error_code

T *danceq::internal::Vector::get_data_ptr(const uint64_t offset = 0UL)

Pointer to the local data with an offset.

Points to the local data with an offset.

Note

If MPI is enabled, each rank points to its part with the same offset.

Returns:

Pointer to data

const T *danceq::internal::Vector::get_const_data_ptr(const uint64_t offset = 0UL) const

const Pointer to the local data with an offset.

Points to the local data with an offset. This allows only read access.

Note

If MPI is enabled, each rank points to its part with the same offset.

Returns:

const Pointer to data

int32_t danceq::internal::Vector::info(void) const

Prints information about the vector.

Returns:

error_code

const T danceq::internal::Vector::operator[](const uint64_t index) const

Overloaded [] operator for readout.

Returns value at index that can range from 0 to dim. The function is compatible with MPI and each processes obtains the same value stored at index.

Note

It is not possible to set an entry with this operator! Use set_index(index,value) to do this.

Warning

The performance is bad if multiple values are requested, use get_const_data_ptr(…) instead.

Parameters:

index – Index

Returns:

Vales

std::vector<T> danceq::internal::Vector::gather_data(const int32_t root = 0) const

Gathers the data into one vector.

This is equivalent get_data() without MPI. The input root is meaningless in this case.

Parameters:

root – Designated MPI rank (Default: 0)

Returns:

data