File SDPAFormatManager.h

template<typename NT>
class SdpaFormatManager
#include <SDPAFormatManager.h>

Reads/writes files according to the SDPA format for sdps. Currently supported Format:

<objective function vector> <i-th row of j-th matrix>

For example: 2 3 1 1

Template Parameters:

NT – Numerical Type

Public Functions

inline void loadSDPAFormatFile(std::ifstream &is, std::vector<MT> &matrices, VT &objectiveFunction)

Reads an SDPA format file

Parameters:

  • is – [in] An open stram pointing to the file

  • matrices – [out] the matrices A0, A1, A2, …, An

  • objectiveFunction – [out] The objective function of the sdp

inline void writeSDPAFormatFile(std::ostream &os, std::vector<MT> const &matrices, VT const &objectiveFunction)

Create a SDPA format file

Parameters:

  • os – [in] Open stream to file

  • matrices – [in] The matrices A0, …, An

  • objectiveFunction – [in] The objective function of the sdp

template<typename Spectrahedron, typename Point>
inline void loadSDPAFormatFile(std::ifstream &is, Spectrahedron &spectrahedron, Point &objectiveFunction)

Read a spectrahedron and a vector (objective function) from a SDPA format input file

Template Parameters:

Point –

Parameters:

  • is – [in] opened stream to input file

  • spectrahedron – [out]

  • objectiveFunction – [out]

template<typename Spectrahedron, typename Point>
inline void writeSDPAFormatFile(std::ostream &os, Spectrahedron const &spectrahedron, Point const &objectiveFunction)

Write a spectrahedron and a vector (objective function) to a SDPA format output file

Template Parameters:

Point –

Parameters:

  • is – [in] opened stream to output file

  • spectrahedron – [in]

  • objectiveFunction – [in]

Private Types

typedef std::string::iterator string_it
typedef std::list<NT> listVector
typedef Eigen::Matrix<NT, Eigen::Dynamic, Eigen::Dynamic> MT
typedef Eigen::Matrix<NT, Eigen::Dynamic, 1> VT

Private Functions

inline char consumeSymbol(string_it &at, string_it &end)

Return the first non white space/tab character and advance the iterator one position

Parameters:

  • it – [inout] Current position

  • end – [in] End of string

Returns:

First non white space/tab character

inline bool isCommentLine(std::string &line)

Determine if current line is a comment

Parameters:

line – [in] The current line

Returns:

true if line is a comment, false otherwise

inline int fetchNumber(std::string &string)

Get an integer from the string

Parameters:

string – [in]

Returns:

an integer

inline listVector readVector(std::string &string)

Read a vector of the form {val1, val2, …, valn}

Parameters:

string – Contains the vector

Returns:

a list with the n numbers