Initializing help system before first use

XSLPgetrowinfo, XPRSslpgetrowinfo

Purpose
Get current row information.
Topic areas
SLP, Solution
Synopsis
int XSLP_CC XSLPgetrowinfo(XSLPprob prob, int type, int row, XSLPalltype *p_info);
Arguments
prob 
The current SLP problem
type 
Type of information (see below)
row 
Index of the row whose information is to be handled
p_info 
Address of information to be set or retrieved
Example
The following example prints the current penalty factor of row 1: 
XSLPalltype alltype;
XSLPgetrowinfo(prob, XSLP_ROWINFO_CURRENTPENALTYFACTOR, 1, &alltype);
printf("penaltyfactor[1]=%f\n", alltype.value.real);
Further information
1.

If the data is not available, the type of the returned p_info is set to XSLPtype_undefined.

Please refer to the header file xprs.h for the definition of XPRSalltype which is identical to XSLPalltype.

The following constants are provided for row information handling:

XSLP_ROWINFO_SLACK
Get the current slack value of the row
XSLP_ROWINFO_DUAL
Get the current dual multiplier of the row
XSLP_ROWINFO_NUMPENALTYERRORS
Get the number of times the penalty error vector has been active for the row
XSLP_ROWINFO_MAXPENALTYERROR
Get the maximum size of the penalty error vector activity for the row
XSLP_ROWINFO_TOTALPENALTYERROR
Get the total size of the penalty error vector activity for the row
XSLP_ROWINFO_CURRENTPENALTYERROR
Get the size of the penalty error vector activity in the current iteration for the row
XSLP_ROWINFO_CURRENTPENALTYFACTOR
Set the size of the penalty error factor for the current iteration for the row
XSLP_ROWINFO_PENALTYCOLUMNPLUS
Get the index of the positive penalty column for the row (+)
XSLP_ROWINFO_PENALTYCOLUMNPLUSVALUE
Get the value of the positive penalty column for the row (+)
XSLP_ROWINFO_PENALTYCOLUMNPLUSDJ
Get the reduced cost of the positive penalty column for the row (+)
XSLP_ROWINFO_PENALTYCOLUMNMINUS
Get the index of the negative penalty column for the row (-)
XSLP_ROWINFO_PENALTYCOLUMNMINUSVALUE
Get the value of the negative penalty column for the row (-)
XSLP_ROWINFO_PENALTYCOLUMNMINUSDJ
Get the reduced cost of the negative penalty column for the row (-)
2. This function can be used to get the current SLP iteration solution in the case where this is not available using XSLPgetslpsol due to solution filtering via XSLP_FILTER.

Parent Topic Library functions

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