callable functions

    function rpd_initialize(T, data, control, status)

Set default control values and initialize private data

Parameters:

data	holds private internal data
control	is a structure containing control information (see rpd_control_type)
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are (currently): 0 The initialization was successful.

    function rpd_get_stats(T, qplib_file, qplib_file_len, control, data,
                           status, p_type, n, m, h_ne, a_ne, h_c_ne)

Read the data from a specified QPLIB file into internal storage, and report the type of problem encoded, along with problem-specific dimensions.

Parameters:

qplib_file	is a one-dimensional array of type Vararg{Cchar} that specifies the name of the QPLIB file that is to be read.
qplib_file_len	is a scalar variable of type Int32 that gives the number of characters in the name encoded in qplib_file.
control	is a structure whose members provide control parameters for the remaining procedures (see rpd_control_type)
data	holds private internal data
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are: 0 The statistics have been recovered successfully. -1 An allocation error occurred. A message indicating the offending array is written on unit control.error, and the returned allocation status and a string containing the name of the offending array are held in inform.alloc_status and inform.bad_alloc respectively. -2 A deallocation error occurred. A message indicating the offending array is written on unit control.error and the returned allocation status and a string containing the name of the offending array are held in inform.alloc_status and inform.bad_alloc respectively.
p_type	is a one-dimensional array of size 4 and type Vararg{Cchar} that specifies the type of quadratic programming problem encoded in the QPLIB file. The first character indicates the type of objective function used. It will be one of the following: L a linear objective function. D a convex quadratic objective function whose Hessian is a diagonal matrix. C a convex quadratic objective function. Q a quadratic objective function whose Hessian may be indefinite. The second character indicates the types of variables that are present. It will be one of the following: C all the variables are continuous. B all the variables are binary (0-1). M the variables are a mix of continuous and binary. I all the variables are integer. G the variables are a mix of continuous, binary and integer. The third character indicates the type of the (most extreme) constraint function used; other constraints may be of a lesser type. It will be one of the following: N there are no constraints. B some of the variables lie between lower and upper bounds (box constraint). L the constraint functions are linear. D the constraint functions are convex quadratics with diagonal Hessians. C the constraint functions are convex quadratics. Q the constraint functions are quadratics whose Hessians may be indefinite. Thus for continuous problems, we would have LCL a linear program. LCC or LCQ a linear program with quadratic constraints. CCB or QCB a bound-constrained quadratic program. CCL or QCL a quadratic program. CCC or CCQ or QCC or QCQ a quadratic program with quadratic constraints. For integer problems, the second character would be I rather than C, and for mixed integer problems, the second character would by M or G.
n	is a scalar variable of type Int32 that holds the number of variables.
m	is a scalar variable of type Int32 that holds the number of general constraints.
h_ne	is a scalar variable of type Int32 that holds the number of entries in the lower triangular part of \(H\) stored in the sparse symmetric co-ordinate storage scheme.
a_ne	is a scalar variable of type Int32 that holds the number of entries in \(A\) stored in the sparse co-ordinate storage scheme.
h_c_ne	is a scalar variable of type Int32 that holds the number of entries in the lower triangular part of \(H_c\) stored in the joint sparse co-ordinate storage scheme.

    function rpd_get_g(T, data, status, n, g)

Recover the linear term \(g\) from in objective function

Parameters:

data	holds private internal data
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are: 0 The statistics have been recovered successfully. -93 The QPLIB file did not contain the required data.
n	is a scalar variable of type Int32 that holds the number of variables.
g	is a one-dimensional array of size n and type T that gives the linear term \(g\) of the objective function. The j-th component of g, j = 1, … , n, contains \(g_j\).

    function rpd_get_f(T, data, status, f)

Recover the constant term \(f\) in the objective function.

Parameters:

data	holds private internal data
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are: 0 The statistics have been recovered successfully. -93 The QPLIB file did not contain the required data.
f	is a scalar of type T that gives the constant term \(f\) from the objective function.

    function rpd_get_xlu(T, data, status, n, x_l, x_u)

Recover the variable lower and upper bounds \(x_l\) and \(x_u\).

Parameters:

data	holds private internal data
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are: 0 The statistics have been recovered successfully. -93 The QPLIB file did not contain the required data.
n	is a scalar variable of type Int32 that holds the number of variables.
x_l	is a one-dimensional array of size n and type T that gives the lower bounds \(x_l\) on the variables \(x\). The j-th component of x_l, j = 1, … , n, contains \((x_l)_j\).
x_u	is a one-dimensional array of size n and type T that gives the upper bounds \(x_u\) on the variables \(x\). The j-th component of x_u, j = 1, … , n, contains \((x_u)_j\).

    function rpd_get_clu(T, data, status, m, c_l, c_u)

Recover the constraint lower and upper bounds \(c_l\) and \(c_u\).

Parameters:

data	holds private internal data
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are: 0 The statistics have been recovered successfully. -93 The QPLIB file did not contain the required data.
m	is a scalar variable of type Int32 that holds the number of general constraints.
c_l	is a one-dimensional array of size m and type T that gives the lower bounds \(c_l\) on the constraints \(A x\). The i-th component of c_l, i = 1, … , m, contains \((c_l)_i\).
c_u	is a one-dimensional array of size m and type T that gives the upper bounds \(c_u\) on the constraints \(A x\). The i-th component of c_u, i = 1, … , m, contains \((c_u)_i\).

    function rpd_get_h(T, data, status, h_ne, h_row, h_col, h_val)

Recover the Hessian term \(H\) in the objective function.

Parameters:

data	holds private internal data
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are: 0 The statistics have been recovered successfully. -93 The QPLIB file did not contain the required data.
h_ne	is a scalar variable of type Int32 that holds the number of entries in the lower triangular part of the Hessian matrix \(H\).
h_row	is a one-dimensional array of size h_ne and type Int32 that gives the row indices of the lower triangular part of \(H\) in the sparse co-ordinate storage scheme.
h_col	is a one-dimensional array of size h_ne and type Int32 that gives the column indices of the lower triangular part of \(H\) in the sparse co-ordinate storage scheme.
h_val	is a one-dimensional array of size h_ne and type T that holds the values of the entries of the lower triangular part of the Hessian matrix \(H\) in the sparse co-ordinate storage scheme.

    function rpd_get_a(T, data, status, a_ne, a_row, a_col, a_val)

Recover the Jacobian term \(A\) in the constraints.

Parameters:

data	holds private internal data
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are: 0 The statistics have been recovered successfully. -93 The QPLIB file did not contain the required data.
a_ne	is a scalar variable of type Int32 that holds the number of entries in the constraint Jacobian matrix \(A\).
a_row	is a one-dimensional array of size a_ne and type Int32 that gives the row indices of \(A\) in the sparse co-ordinate storage scheme.
a_col	is a one-dimensional array of size a_ne and type Int32 that gives the column indices of \(A\) in the sparse co-ordinate, storage scheme.
a_val	is a one-dimensional array of size a_ne and type T that gives the values of the entries of the constraint Jacobian matrix \(A\) in the sparse co-ordinate scheme.

    function rpd_get_h_c(T, data, status, h_c_ne,
                         h_c_ptr, h_c_row, h_c_col, h_c_val)

Recover the Hessian terms \(H_c\) in the constraints.

Parameters:

data	holds private internal data
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are: 0 The statistics have been recovered successfully. -93 The QPLIB file did not contain the required data.
h_c_ne	is a scalar variable of type Int32 that holds the number of entries in the lower triangular part of the Hessian matrix \(H\).
h_c_ptr	is a one-dimensional array of size h_c_ne and type Int32 that gives the constraint indices of the lower triangular part of \(H_c\) in the joint sparse co-ordinate storage scheme.
h_c_row	is a one-dimensional array of size h_c_ne and type Int32 that gives the row indices of the lower triangular part of \(H_c\) in the joint sparse co-ordinate storage scheme.
h_c_col	is a one-dimensional array of size h_c_ne and type Int32 that gives the column indices of the lower triangular part of \(H_c\) in the sparse co-ordinate storage scheme.
h_c_val	is a one-dimensional array of size h_c_ne and type T that holds the values of the entries of the lower triangular part of the Hessian matrix \(H_c\) in the sparse co-ordinate storage scheme.

    function rpd_get_x_type(T, data, status, n, x_type)

Recover the types of the variables \(x\).

Parameters:

data	holds private internal data
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are: 0 The statistics have been recovered successfully. -93 The QPLIB file did not contain the required data.
n	is a scalar variable of type Int32 that holds the number of variables.
x_type	is a one-dimensional array of size n and type Int32 that specifies the type of each variable \(x\). Specifically, for j = 1, … , n, x(j) = 0 if variable \(x_j\) is continuous, 1 if variable \(x_j\) is integer, and 2 if variable \(x_j\) is binary (0,1)

    function rpd_get_x(T, data, status, n,

Recover the initial values of the variables \(x\).

Parameters:

data	holds private internal data
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are: 0 The statistics have been recovered successfully. -93 The QPLIB file did not contain the required data.
n	is a scalar variable of type Int32 that holds the number of variables.
x	is a one-dimensional array of size n and type T that gives the initial values \(x\) of the optimization variables. The j-th component of x, j = 1, … , n, contains \(x_j\).

    function rpd_get_y(T, data, status, m, y)

Recover the initial values of the Lagrange multipliers \(y\).

Parameters:

data	holds private internal data
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are: 0 The statistics have been recovered successfully. -93 The QPLIB file did not contain the required data.
m	is a scalar variable of type Int32 that holds the number of general constraints.
y	is a one-dimensional array of size n and type T that gives the initial values \(y\) of the Lagrange multipliers for the general constraints. The j-th component of y, j = 1, … , m, contains \(y_j\).

    function rpd_get_z(T, data, status, n, z)

Recover the initial values of the dual variables \(z\).

Parameters:

data	holds private internal data
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are: 0 The statistics have been recovered successfully. -93 The QPLIB file did not contain the required data.
n	is a scalar variable of type Int32 that holds the number of variables.
z	is a one-dimensional array of size n and type T that gives the initial values \(z\) of the dual variables. The j-th component of z, j = 1, … , n, contains \(z_j\).

    function rpd_information(T, data, inform, status)

Provides output information

Parameters:

data	holds private internal data
inform	is a structure containing output information (see rpd_inform_type)
status	is a scalar variable of type Int32 that gives the exit status from the package. Possible values are (currently): 0 The values were recorded successfully

    function rpd_terminate(T, data, control, inform)

Deallocate all internal private storage

Parameters:

data	holds private internal data
control	is a structure containing control information (see rpd_control_type)
inform	is a structure containing output information (see rpd_inform_type)