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# AddPwlCons(Int32, Int64, Int32[], Int32[], Int64[], Double[], Double[]) Method

Adds one or more piecewise linear constraints to the problem. Each piecewise linear constraint y = f(x) consists of an (input) column x, a (different) resultant (output column) y and a piecewise linear function f. The piecewise linear function f is described by at least two breakpoints, which are given as combinations of x- and y-values. Discontinuous piecewise linear functions are supported, in this case both the left and right limit at a given point need to be entered as breakpoints. To differentiate between left and right limit, the breakpoints need to be given as a list with non-decreasing x-values.
Namespace: Optimizer
Assembly: xprsdn (in xprsdn.dll) Version: 47.01.01+0ba4e76731516b80760698bbaa939494dae84e49
Syntax
C#

    public void AddPwlCons(
    	int npwls,
    	long npoints,
    	int[] colind,
    	int[] resultant,
    	long[] start,
    	double[] xval,
    	double[] yval
    )

#### Parameters

npwls Int32
  The number of piecewise linear constraints to add.
npoints Int64
  The total number of breakpoints of all piecewise linear constraints that should be added.
colind Int32
  Integer array of length npwls containing the indices of the input variables x of the piecewise linear functions.
resultant Int32
  Integer array of length npwls containing the indices of the output variables y of the piecewise linear functions.
start Int64
  Integer array of length npwls containing the start index of each piecewise linear constraint in the xval and yval arrays.
xval Double
  Double array of length npoints containing the x-values of the breakpoints.
yval Double
  Double array of length npoints containing the y-values of the breakpoints.

See Also

#### Reference

XPRSprob Class
AddPwlCons Overload
Optimizer Namespace
Parent Topic AddPwlCons Method

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