Class: NotANumber

• Inheritance
• Description
• Related information
• Class protocol
  • class initialization
  • instance creation
• Instance protocol
  • arithmetic
  • comparing
  • double dispatching
  • printing
  • testing

Inheritance:

   Object
   |
   +--Magnitude
      |
      +--ArithmeticValue
         |
         +--Number
            |
            +--MetaNumber
               |
               +--NotANumber

Package:

stx:libbasic

Category:

Magnitude-Numbers

Version:

rev: 1.2 date: 2003-07-02 09:52:32

user: cg

file: NotANumber.st directory: libbasic

module: stx stc-classLibrary: libbasic

Author:

Claus Gittinger

Description:

Represents the two metaNumbers +INF and -INF for non-float classes.

Related information:

    Number
    Infinity
    NotANumber
    Float
    ShortFloat
    Fraction
    FixedPoint
    Integer
    Complex
    FloatArray
    DoubleArray

Class protocol:

 initialize

 new

Instance protocol:

 * aNumber

Multiply the receiver and the argument and answer with the result.

 + aNumber

Add the receiver and the argument and answer with the result.

 - aNumber

Subtract the argument from the receiver and answer with the result.

 / aNumber

Divide the receiver by the argument and answer with the result.

 = something

return true, if the argument represents the same numeric value
as the receiver, false otherwise.

 differenceFromSomeNumber: aNumber

sent from aNumber-self, if aNumber does not know how to handle this

 lessFromSomeNumber: aNumber

sent from aNumber < self, if aNumber does not know how to handle this

 productFromSomeNumber: aNumber

sent from aNumber*self, if aNumber does not know how to handle this

 quotientFromSomeNumber: aNumber

Return the quotient of the argument, aNumber and the receiver.
Sent when aNumber does not know how to divide by the receiver.

 sumFromSomeNumber: aNumber

sent from aNumber+self, if aNumber does not know how to handle this

 printOn: aStream

 isFinite

 isNaN