Initializing help system before first use

# XPRSaddcbslpcascadevarfail

Purpose
Add a user callback to be called after cascading a column was not successful
Topic areas
Callback, SLP, Cascading
Synopsis
`int XPRS_CC XPRSaddcbslpcascadevarfail(XPRSprob prob, int (XPRS_CC *slpcascadevarfail) (XPRSprob cbprob, void *cbdata, int col), void *data, int priority);`
Arguments

prob | The current problem.
slpcascadevarfail | The function to be called after cascading a column was not successful. slpcascadevarfail returns an integer value. If the return value is nonzero, the cascading process will be omitted for the remaining variables during the current SLP iteration, but the optimization will continue.
cbprob | The problem passed to the callback function.
cbdata | The user-defined object passed as data to XPRSaddcbslpcascadevarfail.
col | The number of the column which has been cascaded.
data | A user-defined object, which can be used for any purpose by the function. data is passed to slpcascadevarfail as cbdata.
priority | 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.

Related topics
XPRSslpcascade, XPRSaddcbslpcascadeend, XPRSaddcbslpcascadestart, XPRSaddcbslpcascadevar XPRSremovecbslpcascadevarfail
Parent Topic Library functions and the programming interface

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