Class: Rational

Inherits:

Object

• Object
• Rational

Defined in:

lib/y_support/abstract_algebra.rb

Overview

Patching Rational with Algebra::Field compliance methods.

Class Method Summary

• .add(other) ⇒ Object
• .additive_identity ⇒ Object (also: zero)
• .additive_inverse ⇒ Object
• .multiplicative_identity ⇒ Object (also: one)
• .multiplicative_inverse ⇒ Object
• .multiply(other) ⇒ Object

Class Method Details

.add(other) ⇒ Object

# File 'lib/y_support/abstract_algebra.rb', line 110

def add( other ); self + other end

.additive_identity ⇒ Object Also known as: zero

# File 'lib/y_support/abstract_algebra.rb', line 108

def additive_identity; Rational 0, 1 end

.additive_inverse ⇒ Object

# File 'lib/y_support/abstract_algebra.rb', line 111

def additive_inverse; -self end

.multiplicative_identity ⇒ Object Also known as: one

# File 'lib/y_support/abstract_algebra.rb', line 113

def multiplicative_identity; Rational 1, 1 end

.multiplicative_inverse ⇒ Object

# File 'lib/y_support/abstract_algebra.rb', line 115

def multiplicative_inverse; Rational( 1, 1 ) / self end

.multiply(other) ⇒ Object

# File 'lib/y_support/abstract_algebra.rb', line 112

def multiply( other ); self * other end