From 902b2ce3c669d4e3b5c20b2c90a3b3982f17d820 Mon Sep 17 00:00:00 2001
From: KOBAYASHI Shuji <shuujii@gmail.com>
Date: Mon, 27 May 2019 21:29:49 +0900
Subject: Fix `Rational#==(Complex)`

Consider a Numreic class like `Complex` that does not have `<=>` but `==`
works (`0i == 0r` is `true`).
---
 mrbgems/mruby-rational/mrblib/rational.rb | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'mrbgems/mruby-rational/mrblib')

diff --git a/mrbgems/mruby-rational/mrblib/rational.rb b/mrbgems/mruby-rational/mrblib/rational.rb
index 4936b1123..54d9a955f 100644
--- a/mrbgems/mruby-rational/mrblib/rational.rb
+++ b/mrbgems/mruby-rational/mrblib/rational.rb
@@ -62,6 +62,19 @@ class Rational < Numeric
       nil
     end
   end
+
+  def ==(rhs)
+    if rhs.is_a?(Integral)
+      return numerator == rhs if denominator == 1
+      rhs = Rational(rhs)
+    end
+
+    if rhs.is_a?(Rational)
+      numerator * rhs.denominator == denominator * rhs.numerator
+    else
+      rhs == self
+    end
+  end
 end
 
 class Numeric
-- 
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