linbox

Random field base element generator. More...
#include <envelope.h>
Public Types  
typedef ElementEnvelope< Field >  Element 
element type  
Public Member Functions  
RandIterEnvelope (const FieldEnvelope< Field > &F, const integer &size=0, const integer &seed=0)  
Constructor from field, sampling size, and seed. More...  
RandIterEnvelope (const typename Field::RandIter &R)  
Constructor from random field element generator to be wrapped. More...  
RandIterEnvelope (const RandIterEnvelope &R)  
Copy constructor. More...  
~RandIterEnvelope ()  
Destructor. More...  
RandIterAbstract &  operator= (const RandIterAbstract &R) 
Assignment operator. More...  
RandIterAbstract *  construct (const FieldAbstract &F, const integer &size=0, const integer &seed=0) const 
Virtual constructor from field, sampling size, and seed. More...  
RandIterAbstract *  clone (void) const 
Virtual copy constructor. More...  
ElementAbstract &  random (ElementAbstract &a) const 
Random field element creator. More...  
Random field base element generator.
This encapsulated class is a generator of random field base elements for the encapsulating field. It is required to contain constructors from a field object and two integers. The first integer being a cardinality of a set to draw the random elements from, and the second being a seed for the random number generator. It is also required to contain a copy constructor, a destructor, and an operator() which acts on a reference to a field base element. In this operator(), the random element is placed into the input field base element and also returned as a reference.

inline 
Constructor from field, sampling size, and seed.
The random field element iterator works in the field F, is seeded by seed, and it returns any one element with probability no more than 1/min (size, F.cardinality (c)). A sampling size of zero means to sample from the entire field. A seed of zero means to use some arbitrary seed for the generator.
F  LinBox field envelope object in which to do arithmetic 
size  constant integer reference of sample size from which to sample (default = 0) 
seed  constant integer reference from which to seed random number generator (default = 0) 

inline 
Constructor from random field element generator to be wrapped.
R  random field element generator object to be wrapped 

inline 
Copy constructor.
Constructs RandIterEnvelope object by copying the random field element generator. This is required to allow generator objects to be passed by value into functions.
R  RandIterEnvelope object. 

inline 
Destructor.
Required by abstract base class. This destructs the random field element generator object.

inlinevirtual 
Assignment operator.
Assigns RandIterEnvelope object R to generator. Required by abstract base class.
R  RandIterEnvelope object. 
Implements RandIterAbstract.

inlinevirtual 
Virtual constructor from field, sampling size, and seed.
Required because constructors cannot be virtual. Passes construction on to derived classes. The random field element iterator works in the field F, is seeded by seed, and it returns any one element with probability no more than 1/min (size, F.cardinality (c)). A sampling size of zero means to sample from the entire field. A seed of zero means to use some arbitrary seed for the generator. Required by abstract base class.
F  LinBox field abstract object in which to do arithmetic 
size  constant integer reference of sample size from which to sample (default = 0) 
seed  constant integer reference from which to seed random number generator (default = 0) 
Implements RandIterAbstract.

inlinevirtual 
Virtual copy constructor.
Required because constructors cannot be virtual. Passes construction on to derived classes. Required by abstract base class.
Implements RandIterAbstract.

inlinevirtual 
Random field element creator.
This returns a random field element from the information supplied at the creation of the generator. Required by abstract base class.
Implements RandIterAbstract.