Initializing help system before first use

GetQRowQMatrix Method (Int32, Int32[], Int32[], Double[], Int32, Int32, Int32)

Returns the nonzeros in a quadratic constraint coefficients matrix for the columns in a given range. To achieve maximum efficiency, getQRowQMatrix returns the lower triangular part of this matrix only.

Namespace:   Optimizer
Assembly:  xprsdn (in xprsdn.dll) Version: 44.01.01
Syntax
C# 
public int GetQRowQMatrix(
	int row,
	int[] start,
	int[] colind,
	double[] rowqcoef,
	int maxcoefs,
	int first,
	int last
)

Parameters

row
Type:  System.Int32
Index of the row for which the quadratic coefficients are to be returned.
start
Type:  System.Int32
Integer array which will be filled with indices indicating the starting offsets in the colind and rowqcoef arrays for each requested column. It must be length of at least last-first+2. Column i starts at position start[i] in the colind and rowqcoef arrays, and has start[i+1]-start[i] elements in it. May be null if maxcoefs is 0.
colind
Type:  System.Int32
Integer array of length maxcoefs which will be filled with the column indices of the nonzero elements in the lower triangular part of Q. May be null if maxcoefs is 0.
rowqcoef
Type:  System.Double
Double array of length maxcoefs which will be filled with the nonzero element values. May be null if maxcoefs is 0.
maxcoefs
Type:  System.Int32
Number of elements to be saved in colind and rowqcoef. If maxcoefs < *p_ncoefs, only maxcoefs elements are written.
first
Type:  System.Int32
First column in the range.
last
Type:  System.Int32
Last column in the range.

Return Value

Type:  Int32
Remarks
See Also
Parent Topic GetQRowQMatrix Method

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