The routine CPXaddrows()
adds constraints to a specified CPLEX problem object. This routine may be called any time after a call to CPXcreateprob()
.
When adding a ranged row, CPXaddrows()
sets the corresponding range value to 0. Use the routine CPXchgrngval()
to change the range value.
The routine returns a zero on success, and a nonzero if an error occurs.
The pointer to the CPLEX environment as returned by CPXopenCPLEX()
.
A pointer to a CPLEX problem object as returned by CPXcreateprob()
.
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The use of CPXaddrows() as a way to add new columns is discouraged in favor of a direct call to CPXnewcols() before calling CPXaddrows() .
|
An integer that indicates the number of new rows to be added to the constraint matrix.
sense[i] | = ' L ' | ![]() |
sense[i] | = ' E ' | = constraint |
sense[i] | = ' G ' | ![]() |
sense[i] | = ' R ' | ranged constraint |
Arrays that describe the rows to be added. The format is similar to the format used to describe the constraint matrix in the routine CPXcopylp()
(see description of matbeg, matcnt
, matind
, and matval
in that routine), but the nonzero coefficients are grouped by row instead of column in the array rmatval
. The nonzero elements of every row must be stored in sequential locations in this array from position rmatbeg[i]
to rmatbeg[i+1]-1
(or from rmatbeg[i]
to nzcnt -1
if i=rcnt-1
). Each entry, rmatind[i]
, indicates the column index of the corresponding coefficient, rmatval[i]
. Unlike CPXcopylp()
, all rows must be contiguous, and rmatbeg[0]
must be 0.
status = CPXaddrows (env, lp, ccnt, rcnt, nzcnt, rhs, sense, rmatbeg, rmatind, rmatval, newcolname, newrowname); |