# /home/coin/svn-release/Alps-1.4.5/CoinUtils/src/CoinPresolveTighten.hpp File Reference

`#include "CoinPresolveMatrix.hpp"`
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## Classes
class | do_tighten_action
struct | do_tighten_action::action
## Defines
#define | DO_TIGHTEN 30
## Functions
const CoinPresolveAction * | tighten_zero_cost (CoinPresolveMatrix *prob, const CoinPresolveAction *next)

## Define Documentation

#define DO_TIGHTEN 30

Definition at line 17 of file CoinPresolveTighten.hpp.

## Function Documentation

const CoinPresolveAction* tighten_zero_cost | ( | CoinPresolveMatrix * | prob,
|  | const CoinPresolveAction * | next |
| ) |  |  |