Class: SomeNumber

• Inheritance
• Description
• Instance protocol
  • arithmetic
  • comparing
  • double dispatching
  • printing
  • private-accessing
  • queries

Inheritance:

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

Package:

stx:libbasic

Category:

Magnitude-Numbers

Version:

rev: 1.14 date: 2021/11/15 08:49:40

user: cg

file: SomeNumber.st directory: libbasic

module: stx stc-classLibrary: libbasic

Description:

Only used internally during double dispatch, 
when MetaNumbers (INF and NAN) are involved.

copyright
COPYRIGHT (c) 2003 by eXept Software AG
             All Rights Reserved

This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice.   This software may not
be provided or otherwise made available to, or used by, any
other person.  No title to or ownership of the software is
hereby transferred.

Instance protocol:

 * something

return the product of the receiver and the argument

 + something

return the sum of the receiver and the argument

 - something

return the difference of the receiver and the argument

 / something

return the quotient of the receiver and the argument

 negated

return the receiver negated

 < something

return true if the receiver is less than the argument

 = something

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

Usage example(s):

Float infinity = Infinity positive Infinity positive = Float infinity Float negativeInfinity = Infinity negative Infinity negative = Float negativeInfinity Float negativeInfinity = Infinity positive Infinity positive = Float negativeInfinity

 differenceFromSomeNumber: someNumber

realNumber isNaN ifTrue:[^ self ].

Usage example(s):

^ realNumber differenceFromSomeNumber:someNumber

 printOn: aStream

(comment from inherited method)
append a printed description of the receiver to aStream

 realNumber

 realNumber: something

 isFinite

return true, if the receiver is a finite number (not NaN and not +/-INF)

 isInfinite

return true, if the receiver is an infinite number (+Inf or -Inf)

 isNaN

return true, if the receiver is an invalid number (NaN - not a number).

 negative

true if the receiver is < 0

 positive

return true if the receiver is >= 0

 sign

return the sign of the receiver (-1, 0 or 1)

 strictlyPositive

true if the receiver is > 0