Added & and ^ explanations

Author: tomclose

special_ops.rb

@@ -0,0 +1,23 @@
+# & is the bitwise and operation. It operates on numbers in their binary representation.
+# It takes a pair of bits at a given position in the input numbers and
+# puts a 1 in that position in the output if they are both 1s. Otherwise
+# it puts a 0.
+def bitwise_and(x, y)
+	ans = x&y
+	# rjust(5) pads the string with spaces (on the left) up to a length of 5
+	puts x.to_s.rjust(5) + " = " + x.to_s(2).rjust(8,'0')
+	puts y.to_s.rjust(5) + " = " + y.to_s(2).rjust(8,'0')
+	puts (x.to_s + "&" + y.to_s).rjust(5) + " = " + ans.to_s(2).rjust(8, '0') + " = " + ans.to_s
+end
+
+# ^ is the bitwise xor operation. It operates on numbers in their binary representation.
+# It takes a pair of bits at a given position in the input numbers and
+# puts a 1 in that position in the output if exactly one is a 1. Otherwise
+# it puts a 0.
+def bitwise_xor(x, y)
+	ans = x^y
+	# rjust(5) pads the string with spaces (on the left) up to a length of 5
+	puts x.to_s.rjust(5) + " = " + x.to_s(2).rjust(8,'0')
+	puts y.to_s.rjust(5) + " = " + y.to_s(2).rjust(8,'0')
+	puts (x.to_s + "^" + y.to_s).rjust(5) + " = " + ans.to_s(2).rjust(8, '0') + " = " + ans.to_s
+end