Bcp 1.4.4
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This class describes a warmstart information that consists solely of the dual vector. More...
#include <BCP_warmstart_primaldual.hpp>
Public Member Functions | |
Constructors and destructor | |
BCP_warmstart_primaldual (BCP_buffer &buf) | |
Create the object by unpacking it from a buffer. | |
BCP_warmstart_primaldual (const double *pfirst, const double *plast, const double *dfirst, const double *dlast) | |
Create an explicitly stored warmstart info by considering the double arrays [fpirst,plast) and [dpirst,dlast) as the primal and dual vectors. | |
BCP_warmstart_primaldual (const BCP_warmstart_primaldual &ws) | |
Copy constructor. | |
virtual | ~BCP_warmstart_primaldual () |
virtual CoinWarmStart * | convert_to_CoinWarmStart () const |
Return an CoinWarmStart object that can be fed to the LP engine. | |
virtual BCP_storage_t | storage () const |
Return how the warmstarting info is stored. | |
virtual BCP_warmstart * | clone () const |
Make a replica of the current warmstart information. | |
virtual BCP_warmstart * | empty_wrt_this () const |
Create a warmstart info describing that no change should be done. | |
virtual int | storage_size () const |
Return how much memory it'll take to pack this warmstart info. | |
virtual void | update (const BCP_warmstart *const change) |
Update the current data with the one in the argument. | |
virtual BCP_warmstart * | as_change (const BCP_warmstart *const old_ws, const BCP_vec< int > &del_vars, const BCP_vec< int > &del_cuts, const double petol, const double detol) const |
Return a pointer to a warmstart info describing the currently stored data as a change with respect to that stored in old_ws . | |
void | pack (BCP_buffer &buf) const |
Pack the warmstart info into a buffer. | |
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virtual | ~BCP_warmstart () |
The destructor is pure virtual. | |
This class describes a warmstart information that consists solely of the dual vector.
Definition at line 21 of file BCP_warmstart_primaldual.hpp.
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inline |
Create the object by unpacking it from a buffer.
Definition at line 43 of file BCP_warmstart_primaldual.hpp.
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inline |
Create an explicitly stored warmstart info by considering the double arrays [fpirst,plast)
and [dpirst,dlast)
as the primal and dual vectors.
Definition at line 47 of file BCP_warmstart_primaldual.hpp.
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inline |
Copy constructor.
Definition at line 51 of file BCP_warmstart_primaldual.hpp.
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inlinevirtual |
Definition at line 54 of file BCP_warmstart_primaldual.hpp.
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virtual |
Return an CoinWarmStart object that can be fed to the LP engine.
The implementation for this class will return an CoinWarmStartDual object.
Implements BCP_warmstart.
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inlinevirtual |
Return how the warmstarting info is stored.
Implements BCP_warmstart.
Definition at line 63 of file BCP_warmstart_primaldual.hpp.
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inlinevirtual |
Make a replica of the current warmstart information.
Implements BCP_warmstart.
Definition at line 82 of file BCP_warmstart_primaldual.hpp.
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inlinevirtual |
Create a warmstart info describing that no change should be done.
This is really the task of a constructor, but BCP does not know the type of warmstart the user will use, so it will invoke this method for a warmstart that was created by the user. Tricky, isn't it?
Implements BCP_warmstart.
Definition at line 86 of file BCP_warmstart_primaldual.hpp.
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inlinevirtual |
Return how much memory it'll take to pack this warmstart info.
It is used when comparing which sort of storage is smaller.
Implements BCP_warmstart.
Definition at line 92 of file BCP_warmstart_primaldual.hpp.
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virtual |
Update the current data with the one in the argument.
If the argument is of explicit storage then just replace the current data. If it is relative and the current data is explicit then perform the update. Otherwise throw an exception.
Implements BCP_warmstart.
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virtual |
Return a pointer to a warmstart info describing the currently stored data as a change with respect to that stored in old_ws
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However, if the currently stored data is shorter to store than the change, then this method can return a copy of the current data! The current data must be explicitly stored and old_ws
must be either explicit or can contain no data. Otherwise an exception must be thrown.
old_ws | the old warmstart info |
del_vars | the indices of the variables that are deleted from the formulation old_ws was created for |
del_cuts | same for the cuts |
petol | primal zero tolerance |
detol | dual zero tolerance |
Implements BCP_warmstart.
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inline |
Pack the warmstart info into a buffer.
Definition at line 107 of file BCP_warmstart_primaldual.hpp.