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Rational

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  Classes of Richard Munroe  >  Rational  >  Download .tar.gz .zip  >  Support forum Support forum (1)  >  Blog Blog  >  RSS 1.0 feed RSS 2.0 feed Latest changes  
Name: Rational
Base name: rational
Description: Perform arithmetic operations on rational numbers
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Version: -
PHP version: -
License: Custom (specified in a license file)
All time users: 337 users
All time rank: 5493
Week users: 0 users
Week rank: 2470
 

  Author  
Picture of Richard Munroe
Name: Richard Munroe is available for providing paid consulting. Contact Richard Munroe .
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Country: United States United States - PHP jobs in United States
Age: 61
All time rank: 101 in United States United States
Week rank: 21 Down3 in United States United States Down
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  Detailed description  
This performs arithmetic operations using rational numbers.

Rational numbers are those numbers that can be represented as the ratio between two integer numbers. Any real number with a finite number decimal digits or that repeats a sequence of digits can be represented as a rational number.

This class can add, subtract, multiply, and divide rational numbers.

The results of the operations are also rational numbers, simplified to eliminate any common factors of the the numerator and denominator. This way the arithmetic operations are performed without loss of precision, a common failing of floating point arithemetic.

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  Innovation Award  
PHP Programming Innovation award nominee
February 2006
Number 4

Prize: One book of choice by O'Reilly
PHP supports all the kinds of arithmetic operations that can be performed between numbers. However, certain operations between rational numbers may result in values that loose precision because PHP represents the results as floating point values.

This class provides means to perform basic arithmetic operations between rational numbers, in a way that the results are also rational numbers, and so they do not loose precision.

Manuel Lemos

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  Packages needed by this class  
Class Dependency Why it is needed
Numerical
Required
Several functions are required for conversion to rational form and simplifying rational numbers.

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  Files folder image Files  
File Role Description
Plain text file class.Rational.php Class Class file for rational numbers.
Plain text file example.php Example Examples of rational number arithmetic
HTML file license.txt Lic. Modified NetBSD License
Plain text file makedoc.sh Data Generate documentation using phpdoc

Download all files: rational.tar.gz rational.zip
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