Initializing help system before first use

getRNG Method

Compute (if required) ranges and return a column range.

Namespace:   BCL
Assembly:  xprbdn (in xprbdn.dll) Version: 44.01.01
Syntax
C# 
public double getRNG(
	int rngtype
)
VB 
Public Function getRNG ( 
	rngtype As Integer
) As Double

Parameters

rngtype
Type:  System.Int32
The type of ranging information sought. This is one of:
  • BCLconstant.XPRB_UPACT - For a variable which is at one of its bounds, the largest value which that bound can take while the current basis remains optimal.
  • BCLconstant.XPRB_LOACT - For a variable which is at one of its bounds, the smallest value which that bound can take while the current basis remains optimal.
  • BCLconstant.XPRB_UUP - The change in objective value per unit increase in the variable activity, assuming the the current basis remains optimal.
  • BCLconstant.XPRB_UDN - The change in objective value per unit decrease in the variable activity, assuming the the current basis remains optimal.
  • BCLconstant.XPRB_UCOST - The largest value which this variable's objective coefficient can take while the current basis remains optimal.
  • BCLconstant.XPRB_LCOST - The smallest value which this variable's objective coefficient can take while the current basis remains optimal.

Return Value

Type:  Double
The double range value. Returns 0 on error.
Examples
xbworkrng.cs in the Introductory Examples folder.
See Also
Parent Topic XPRBvar Methods

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