XPRSaddcbslpdrcol
int XPRS_CC XPRSaddcbslpdrcol(XPRSprob prob, int (XPRS_CC *slpdrcol) (XPRSprob cbprob, void *data, int col, int detcol, double detval, double * p_value, double lb, double ub), void *data, int priority);
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prob
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The current problem.
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slpdrcol
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The function to be called during cascading for each variable with a determining column
slpdrcol returns an integer value. If the return value is positive, it will indicate that the value has been fixed, and cascading should be omitted for the variable. A negative value indicates that a previously fixed value has been relaxed. If no action is taken, a 0 return value should be used.
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cbprob
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The problem passed to the callback function.
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data
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The user-defined object passed as
data to
XPRSaddcbslpcascadevar.
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col
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The index of the column for which the determining columns is checked.
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detcol
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The index of the determining column for the column that is being updated.
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detval
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The value of the determining column in the current SLP iteration.
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p_value
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Used to return the new value for column
col, should it need to be updated, in which case the callback must return a positive value to indicate that this value should be used.
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lb
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The original lower bound of column
col. The callback provides this value as a reference, should the bound be updated or changed during the solution process.
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ub
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The original upper bound of column
col. The callback provides this value as a reference, should the bound be updated or changed during the solution process.
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data
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Address of a user-defined object, which can be used for any purpose. by the function.
data is passed to
slpdrcol as
data.
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priority
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An integer that determines the order in which callbacks of this type will be invoked. The callback added with a higher priority will be called before a callback with a lower priority. Set to 0 if not required.
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