lib/distribution/logistic/ruby.rb in distribution-0.6.0 vs lib/distribution/logistic/ruby.rb in distribution-0.7.0

@@ -1,16 +1,16 @@
 module Distribution
   module Logistic
     module Ruby_
       class << self
-	def rng(u,s)
-	  lambda {p_value(rand(),u,s)}
-	end
+        def rng(u,s)
+          lambda {p_value(rand(),u,s)}
+        end
         def pdf(x,u,s )
-          (Math.exp(-(x-u)/s))/(s*(1+Math.exp(-(x-u)/s)**2))
+          (Math.exp(-(x-u) / s)) / (s*(1+Math.exp(-(x-u) / s)**2))
         end
         def cdf(x,u,s )
-          1/(1+Math.exp(-(x-u)/s))
+          1/(1+Math.exp(-(x-u) / s))
         end
         def p_value(pr,u,s )
           u+s*Math.log(pr/(1-pr))
         end
       end