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XSLPscaling

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Purpose

Analyze the current matrix for largest/smallest coefficients and ratios

Synopsis

int XPRS_CC XSLPscaling(XSLPprob Prob);

Argument

Prob	The current SLP problem.

Example

The following example analyzes the matrix

XSLPscaling(Prob);

Further information

The current matrix (including augmentation if it has been carried out) is scanned for the absolute and relative sizes of elements. The following information is reported:

• Largest and smallest elements in the matrix;
• Counts of the ranges of row ratios in powers of 10 (e.g. number of rows with ratio between 1.0E+01 and 1.0E+02);
• List of the rows (with largest and smallest elements) which appear in the highest range;
• Counts of the ranges of column ratios in powers of 10 (e.g. number of columns with ratio between 1.0E+01 and 1.0E+02);
• List of the columns (with largest and smallest elements) which appear in the highest range;
• Element ranges in powers of 10 (e.g. number of elements between 1.0E+01 and 1.0E+02).

Where any of the reported items (largest or smallest element in the matrix or any reported row or column element) is in a penalty error vector, the results are repeated, excluding all penalty error vectors.

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