checkDupGLPK function

Check for Duplicate Elements in Sparse Matrix

Low level interface function to the GLPK function glp_check_dup. Consult the GLPK documentation for more detailed information.

checkDupGLPK(m, n, ne, ia, ja)

Arguments

• m: Number of rows in the matrix.
• n: Number of columns in the matrix.
• ne: Number of non-zero elements in the matrix.
• ia: Row indices of the non-zero elements.
• ja: Column indices of the non-zero elements.

Details

Interface to the C function checkDup which calls the GLPK function glp_check_dup.

Returns

Returns one of the following values: - 0: No duplikate elements.

• -k: Indices ia[k] or ja[k] are out of range.

• +k: Element (ia[k], ja[k]) is duplicate.

References

Based on the package glpk by Lopaka Lee

The GNU GLPK home page at http://www.gnu.org/software/glpk/glpk.html

Author(s)

Gabriel Gelius-Dietrich geliudie@uni-duesseldorf.de

Maintainer: Mayo Roettger mayo.roettger@hhu.de