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casacore
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casacore
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#include <Random.h>
Public Member Functions | |
| Uniform (RNG *gen, Double low=-1.0, Double high=1.0) | |
| Construct a random number generator for a uniform distribution. More... | |
| virtual | ~Uniform () |
| The destructor is trivial. More... | |
| virtual Double | operator() () |
| Returns a value from the uniform distribution. More... | |
| Double | low () const |
| Functions that allow you to query and change the parameters of the uniform distribution. More... | |
| void | low (Double x) |
| Double | high () const |
| void | high (Double x) |
| void | range (Double low, Double high) |
| virtual void | setParameters (const Vector< Double > &parms) |
| These function allow you to manipulate the parameters (low & high) described above through the base class. More... | |
| virtual Vector< Double > | parameters () const |
| virtual Bool | checkParameters (const Vector< Double > &parms) const |
 Public Member Functions inherited from casacore::Random | |
| virtual | ~Random () |
| A virtual destructor is needed to ensure that the destructor of derived classes gets used. More... | |
| RNG * | generator () |
| Functions that allow you to access and change the class that generates the random bits. More... | |
| void | generator (RNG *p) |
Static Private Member Functions | |
| static Double | calcDelta (Double low, Double high) |
Private Attributes | |
| Double | itsLow |
| Double | itsHigh |
| Double | itsDelta |
Additional Inherited Members | |
| Public Types inherited from casacore::Random | |
| enum | Types { BINOMIAL, DISCRETEUNIFORM, ERLANG, GEOMETRIC, HYPERGEOMETRIC, NORMAL, LOGNORMAL, NEGATIVEEXPONENTIAL, POISSON, UNIFORM, WEIBULL, UNKNOWN, NUMBER_TYPES } |
| This enumerator lists all the predefined random number distributions. More... | |
| Static Public Member Functions inherited from casacore::Random | |
| static String | asString (Random::Types type) |
| Convert the enumerator to a lower-case string. More... | |
| static Random::Types | asType (const String &str) |
| Convert the string to enumerator. More... | |
| static Random * | construct (Random::Types type, RNG *gen) |
| Convert the Random::Type enumerator to a specific object (derived from Random but upcast to a Random object). More... | |
| static Vector< Double > | defaultParameters (Random::Types type) |
| returns the default parameters for the specified distribution. More... | |
| Protected Member Functions inherited from casacore::Random | |
| Random (RNG *generator) | |
| Protected Attributes inherited from casacore::Random | |
| RNG * | itsRNG |
Uniform distribution.
The Uniform class implements a uniform random variable over the copen interval ranging from [low..high). The low parameter is the lowest possible return value and the high parameter can never be returned. The operator() functions returns a value from this distribution.
It is assumed that low limit is less than the high limit and an AipsError exception is thrown if this is not true. The remaining members allow you to read and set the parameters.
Construct a random number generator for a uniform distribution.
The first argument is a class that produces random bits. This pointer is NOT taken over by this class and the user is responsible for deleting it. The remaining arguments define the parameters for this distribution as described in the synopsis.
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virtual |
The destructor is trivial.
Implements casacore::Random.
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inline |
| void casacore::Uniform::high | ( | Double | x | ) |
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inline |
| void casacore::Uniform::low | ( | Double | x | ) |
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virtual |
Returns a value from the uniform distribution.
Implements casacore::Random.
Implements casacore::Random.
These function allow you to manipulate the parameters (low & high) described above through the base class.
The Vectors must always be of length two.
Implements casacore::Random.
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private |
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private |
1.8.5