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PASN_Real Class Reference

Class for ASN floating point type. More...

#include <asner.h>

Inheritance diagram for PASN_Real:
PASN_Object PObject

Public Member Functions

 PASN_Real (double val=0)
 PASN_Real (unsigned tag, TagClass tagClass, double val=0)
PASN_Realoperator= (double val)
 operator double () const
double GetValue () const
void SetValue (double v)
virtual Comparison Compare (const PObject &obj) const
 Compare the two objects and return their relative rank.
virtual PObjectClone () const
 Create a copy of the class on the heap.
virtual void PrintOn (ostream &strm) const
 Output the contents of the object to the stream.
virtual PString GetTypeAsString () const
 Return a string giving the type of the object.
virtual PINDEX GetDataLength () const
virtual PBoolean Decode (PASN_Stream &)
virtual void Encode (PASN_Stream &) const
- Public Member Functions inherited from PASN_Object
PINDEX GetObjectLength () const
virtual PBoolean IsPrimitive () const
PBoolean IsExtendable () const
void SetExtendable (PBoolean ext=true)
TagClass GetTagClass () const
unsigned GetTag () const
virtual void SetTag (unsigned newTag, TagClass tagClass=DefaultTagClass)
void SetConstraints (ConstraintType type, int value)
void SetConstraints (ConstraintType, int lower, MaximumValueTag)
void SetConstraints (ConstraintType, MinimumValueTag lower, unsigned upper)
void SetConstraints (ConstraintType, MinimumValueTag lower, MaximumValueTag upper)
void SetConstraints (ConstraintType type, int lower, unsigned upper)
virtual void SetConstraintBounds (ConstraintType type, int lower, unsigned upper)
virtual void SetCharacterSet (ConstraintType ctype, const char *charSet)
virtual void SetCharacterSet (ConstraintType ctype, unsigned firstChar, unsigned lastChar)
- Public Member Functions inherited from PObject
virtual ~PObject ()
virtual PINDEX HashFunction () const
 This function yields a hash value required by the PDictionary class.
virtual Comparison CompareObjectMemoryDirect (const PObject &obj) const
 Determine the byte wise comparison of two objects.
bool operator== (const PObject &obj) const
 Compare the two objects.
bool operator!= (const PObject &obj) const
 Compare the two objects.
bool operator< (const PObject &obj) const
 Compare the two objects.
bool operator> (const PObject &obj) const
 Compare the two objects.
bool operator<= (const PObject &obj) const
 Compare the two objects.
bool operator>= (const PObject &obj) const
 Compare the two objects.
virtual const char * GetClass (unsigned ancestor=0) const
 Get the current dynamic type of the object instance.
PBoolean IsClass (const char *cls) const
virtual PBoolean InternalIsDescendant (const char *clsName) const
 Determine if the dynamic type of the current instance is a descendent of the specified class.
virtual void ReadFrom (istream &strm)
 Input the contents of the object from the stream.

Protected Attributes

double value
- Protected Attributes inherited from PASN_Object
PBoolean extendable
 PER extension capability.
TagClass tagClass
 BER tag class.
unsigned tag
 ASN object tag.

Additional Inherited Members

- Public Types inherited from PASN_Object
enum  TagClass {
  UniversalTagClass, ApplicationTagClass, ContextSpecificTagClass, PrivateTagClass,
  DefaultTagClass
}
enum  UniversalTags {
  InvalidUniversalTag, UniversalBoolean, UniversalInteger, UniversalBitString,
  UniversalOctetString, UniversalNull, UniversalObjectId, UniversalObjectDescriptor,
  UniversalExternalType, UniversalReal, UniversalEnumeration, UniversalEmbeddedPDV,
  UniversalSequence = 16, UniversalSet, UniversalNumericString, UniversalPrintableString,
  UniversalTeletexString, UniversalVideotexString, UniversalIA5String, UniversalUTCTime,
  UniversalGeneralisedTime, UniversalGeneralizedTime = UniversalGeneralisedTime, UniversalGraphicString, UniversalVisibleString,
  UniversalGeneralString, UniversalUniversalString, UniversalBMPString = 30
}
enum  ConstraintType { Unconstrained, PartiallyConstrained, FixedConstraint, ExtendableConstraint }
enum  MinimumValueTag { MinimumValue = INT_MIN }
enum  MaximumValueTag { MaximumValue = INT_MAX }
- Static Public Member Functions inherited from PASN_Object
static PINDEX GetMaximumArraySize ()
static void SetMaximumArraySize (PINDEX sz)
static PINDEX GetMaximumStringSize ()
static void SetMaximumStringSize (PINDEX sz)
- Protected Member Functions inherited from PASN_Object
 PASN_Object (unsigned tag, TagClass tagClass, PBoolean extend=false)
- Friends inherited from PObject

Detailed Description

Class for ASN floating point type.

Constructor & Destructor Documentation

PASN_Real::PASN_Real ( double  val = 0)
PASN_Real::PASN_Real ( unsigned  tag,
TagClass  tagClass,
double  val = 0 
)

Member Function Documentation

virtual PObject* PASN_Real::Clone ( ) const
virtual

Create a copy of the class on the heap.

The exact semantics of the descendent class determine what is required to make a duplicate of the instance. Not all classes can even do a clone operation.

The main user of the clone function is the PDictionary class as it requires copies of the dictionary keys.

The default behaviour is for this function to assert.

Returns
pointer to new copy of the class instance.

Reimplemented from PObject.

virtual Comparison PASN_Real::Compare ( const PObject obj) const
virtual

Compare the two objects and return their relative rank.

This function is usually overridden by descendent classes to yield the ranking according to the semantics of the object.

The default function is to use the CompareObjectMemoryDirect() function to do a byte wise memory comparison of the two objects.

Returns
LessThan, EqualTo or GreaterThan according to the relative rank of the objects.

Reimplemented from PObject.

virtual PBoolean PASN_Real::Decode ( PASN_Stream )
virtual

Implements PASN_Object.

virtual void PASN_Real::Encode ( PASN_Stream ) const
virtual

Implements PASN_Object.

virtual PINDEX PASN_Real::GetDataLength ( ) const
virtual

Implements PASN_Object.

virtual PString PASN_Real::GetTypeAsString ( ) const
virtual

Return a string giving the type of the object.

Implements PASN_Object.

double PASN_Real::GetValue ( ) const
inline

References value.

PASN_Real::operator double ( ) const
inline

References value.

PASN_Real& PASN_Real::operator= ( double  val)
inline

References value.

virtual void PASN_Real::PrintOn ( ostream &  strm) const
virtual

Output the contents of the object to the stream.

The exact output is dependent on the exact semantics of the descendent class. This is primarily used by the standard operator<< function.

The default behaviour is to print the class name.

Reimplemented from PObject.

void PASN_Real::SetValue ( double  v)
inline

References value.

Member Data Documentation

double PASN_Real::value
protected

The documentation for this class was generated from the following file: