basicPresolveCPLEX: Perform Bound Strengthening and Detect Redundant Rows
In cplexAPI: R Interface to C API of IBM ILOG CPLEX

Description Usage Arguments Details Value Author(s) References

View source: R/cplexAPI.R

Low level interface function to the IBM ILOG CPLEX function CPXbasicpresolve. Consult the IBM ILOG CPLEX documentation for more detailed information.

1	basicPresolveCPLEX(env, lp)

`env`	An object of class `"cplexPtr"` as returned by `openEnvCPLEX`. This is basically a pointer to an IBM ILOG CPLEX environment.
`lp`	An object of class `"cplexPtr"` as returned by `initProbCPLEX`. This is basically a pointer to an IBM ILOG CPLEX problem object.

Interface to the C function basicPresolve which calls the CPLEX function CPXbasicpresolve.

If successfull, a list will be returned:

`redlb`	strengthened lower bounds
`redub`	strengthened upper bounds
`rstat`	status of the row

Otherwise an object of class "cplexError".

Gabriel Gelius-Dietrich <geliudie@uni-duesseldorf.de>

Maintainer: Mayo Roettger <mayo.roettger@hhu.de>

The IBM ILOG CPLEX home page at https://www.ibm.com/support/knowledgecenter/SSSA5P.

cplexAPI documentation built on Oct. 23, 2020, 5:45 p.m.

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