CYCLUS
l_matrix.h
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1 //-----------------------------------------------------------------------------
2 // This is the header file for the LMatrix class. Specific class details can
3 // be found in the "l_matrix.cc" file. This is the same as the Matrix class
4 // except its elements are long doubles.
5 //-----------------------------------------------------------------------------
6 
7 #ifndef CYCLUS_SRC_L_MATRIX_H_
8 #define CYCLUS_SRC_L_MATRIX_H_
9 
10 #include <vector>
11 
12 namespace cyclus {
13 
14 class LMatrix {
15  // friend arithmetic operators involving a scalar k and matrix A
16  friend LMatrix operator*(const long double k, const LMatrix& A); // k * A
17  friend LMatrix operator*(const LMatrix& A, const long double k); // A * k
18  friend LMatrix operator^(const LMatrix& A, const int k); // A^k
19 
20  public:
21  // constructors
22  LMatrix(); // constructs a 1x1 matrix of zeroes
23  LMatrix(int n, int m); // constructs an nxm matrix of zeroes
24 
25  // member access functions
26  int NumRows() const; // returns number of rows
27  int NumCols() const; // returns number of columns
28  const long double& operator()(int i, int j) const; // returns the element aij
29 
30  // population functions
31  void SetElement(int i, int j, long double aij); // sets value of element aij
32  long double& operator()(int i, int j); // sets value of element A(i,j)
33  void AddRow(std::vector<long double>
34  row); // adds a row at the end of the Matrix
35 
36  // other member functions
37  void Print() const; // prints the matrix
38 
39  // assignment operators for matrix objects
40  const LMatrix& operator=(const LMatrix& rhs);
41  const LMatrix& operator+=(const LMatrix& rhs);
42  const LMatrix& operator-=(const LMatrix& rhs);
43  const LMatrix& operator*=(const LMatrix& rhs);
44 
45  private:
46  std::vector< std::vector<long double> >
47  M_; // 2D vector containing matrix elements
48  int rows_; // number of rows
49  int cols_; // number of columns
50 };
51 
52 // arithmetic operators for matrix objects A and B
53 LMatrix operator+(const LMatrix& lhs, const LMatrix& rhs); // A + B
54 LMatrix operator-(const LMatrix& lhs, const LMatrix& rhs); // A - B
55 LMatrix operator*(const LMatrix& lhs, const LMatrix& rhs); // A * B
56 
57 // non-member functions
58 LMatrix identity(int n); // creates an nxn identity matrix
59 
60 } // namespace cyclus
61 
62 #endif // CYCLUS_SRC_L_MATRIX_H_
void SetElement(int i, int j, long double aij)
Definition: l_matrix.cc:74
void Print() const
Definition: l_matrix.cc:94
const LMatrix & operator-=(const LMatrix &rhs)
Definition: l_matrix.cc:157
int NumCols() const
Definition: l_matrix.cc:63
LMatrix operator+(const LMatrix &lhs, const LMatrix &rhs)
Definition: l_matrix.cc:210
LMatrix operator-(const LMatrix &lhs, const LMatrix &rhs)
Definition: l_matrix.cc:218
const LMatrix & operator*=(const LMatrix &rhs)
Definition: l_matrix.cc:176
int NumRows() const
Definition: l_matrix.cc:58
const long double & operator()(int i, int j) const
Definition: l_matrix.cc:69
void AddRow(std::vector< long double > row)
Definition: l_matrix.cc:85
LMatrix identity(int n)
Definition: l_matrix.cc:284
taken directly from OsiSolverInterface.cpp on 2/17/14 from https://projects.coin-or.org/Osi/browser/trunk.
Definition: agent.cc:14
friend LMatrix operator^(const LMatrix &A, const int k)
Definition: l_matrix.cc:269
const LMatrix & operator+=(const LMatrix &rhs)
Definition: l_matrix.cc:142
const LMatrix & operator=(const LMatrix &rhs)
Definition: l_matrix.cc:118
friend LMatrix operator*(const long double k, const LMatrix &A)
Definition: l_matrix.cc:234