loadmiqcqp
Purpose
Used to load a mixed integer quadratic problem with quadratic constraints into the Optimizer data structure.
Such a problem may have quadratic terms in its objective function as well as in its constraints. Integer, binary, partial integer, semi-continuous and semi-continuous integer variables can be defined, together with sets of type 1 and 2. The reference row values for the set members are passed as an array rather than specifying a reference row.
Such a problem may have quadratic terms in its objective function as well as in its constraints. Integer, binary, partial integer, semi-continuous and semi-continuous integer variables can be defined, together with sets of type 1 and 2. The reference row values for the set members are passed as an array rather than specifying a reference row.
Synopsis
loadmiqcqp(
prob,
probname,
rowtype,
rhs,
rng,
objcoef,
start,
collen,
rowind,
rowcoef,
lb,
ub,
objqcol1,
objqcol2,
objqcoef,
qrowind,
nrowqcoefs,
rowqcol1,
rowqcol2,
rowqcoef,
nentities,
nsets,
coltype,
entind,
limit,
settype,
setstart,
setind,
refval,
ncols = x_max_vec_length(objcoef, lb, ub),
nrows = x_max_vec_length(rowtype, rhs, rng),
nobjqcoefs = x_max_vec_length(objqcol1, objqcol2, objqcoef),
nqrows = x_max_vec_length(qrowind, nrowqcoefs)
)
Arguments
|
prob
|
The current problem.
|
|
probname
|
A string of up to MAXPROBNAMELENGTH characters containing a name for the problem.
|
|
rowtype
|
Character array of length
nrows containing the row types:
|
|
rhs
|
Double array of length
nrows containing the right hand side coefficients of the rows.
|
|
rng
|
Double array of length
nrows containing the range values for range rows.
|
|
objcoef
|
Double array of length
ncols containing the objective function coefficients.
|
|
start
|
Integer array containing the offsets in the
rowind and
rowcoef arrays of the start of the elements for each column.
|
|
collen
|
Integer array of length
ncols containing the number of nonzero elements in each column.
|
|
rowind
|
Integer array containing the row indices for the nonzero elements in each column.
|
|
rowcoef
|
Double array containing the nonzero element values; length as for
rowind.
|
|
lb
|
Double array of length
ncols containing the lower bounds on the columns.
|
|
ub
|
Double array of length
ncols containing the upper bounds on the columns.
|
|
objqcol1
|
Integer array of size
nobjqcoefs containing the column index of the first variable in each quadratic term.
|
|
objqcol2
|
Integer array of size
nobjqcoefs containing the column index of the second variable in each quadratic term.
|
|
objqcoef
|
Double array of size
nobjqcoefs containing the quadratic coefficients.
|
|
qrowind
|
Integer array of size
nqrows, containing the indices of rows with quadratic matrices in them.
|
|
nrowqcoefs
|
Integer array of size
nqrows, containing the number of nonzeros in each quadratic constraint matrix.
|
|
rowqcol1
|
Integer array of size
nqcelem, where
nqcelem equals the sum of the elements in
nrowqcoefs (i.e. the total number of quadratic matrix elements in all the constraints).
|
|
rowqcol2
|
Integer array of size
nqcelem, containing the second index for the quadratic constraint matrices.
|
|
rowqcoef
|
Integer array of size
nqcelem, containing the coefficients for the quadratic constraint matrices.
|
|
nentities
|
Number of binary, integer, semi-continuous, semi-continuous integer and partial integer entities.
|
|
nsets
|
Number of SOS1 and SOS2 sets.
|
|
coltype
|
Character array of length
nentities containing the entity types:
|
|
entind
|
Integer array of length
nentities containing the column indices of the MIP entities.
|
|
limit
|
Double array of length
nentities containing the integer limits for the partial integer variables and lower bounds for semi-continuous and semi-continuous integer variables (any entries in the positions corresponding to binary and integer variables will be ignored).
|
|
settype
|
Character array of length
nsets containing the set types:
|
|
setstart
|
Integer array containing the offsets in the
setind and
refval arrays indicating the start of the sets.
|
|
setind
|
Integer array of length
setstart[nsets]-1 containing the columns in each set.
|
|
refval
|
Double array of length
setstart[nsets]-1 containing the reference row entries for each member of the sets.
|
|
ncols
|
Number of structural columns in the matrix.
|
|
nrows
|
Number of rows in the matrix (not including the objective row).
|
|
nobjqcoefs
|
Number of quadratic terms.
|
|
nqrows
|
Number of rows containing quadratic matrices.
|
Return value
The input argument
prob.
Further information
Please refer to the C documentation for more details.
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