# /home/coin/svn-release/Alps-1.4.6/CoinUtils/src/CoinPresolveDupcol.hpp File Reference

`#include "CoinPresolveMatrix.hpp"`
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## Classes
class | dupcol_action
| Detect and remove duplicate columns. More...
struct | dupcol_action::action
class | duprow_action
| Detect and remove duplicate rows. More...
struct | duprow_action::action
class | gubrow_action
| Detect and remove entries whose sum is known. More...
struct | gubrow_action::action
class | twoxtwo_action
| Detect interesting 2 by 2 blocks. More...
struct | twoxtwo_action::action
## Defines
#define | DUPCOL 10

## Detailed Description

Definition in file CoinPresolveDupcol.hpp.

## Define Documentation

#define DUPCOL 10

Definition at line 15 of file CoinPresolveDupcol.hpp.