template<class Field>
class LinBox::RandIterEnvelope< Field >
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.
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.
- Parameters
-
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) |
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.
- Parameters
-
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) |