From bb79aa2f3a2800cfd9c24af8c6569b09e31ebdfd Mon Sep 17 00:00:00 2001
From: Joao P Dubas <joao.dubas@gmail.com>
Date: Thu, 6 Jun 2024 11:34:02 +0000
Subject: [PATCH] fix(growth): alias z-score and use if

---
 lib/growth/calc/centile.ex | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/growth/calc/centile.ex b/lib/growth/calc/centile.ex
index ea48020..91c6ba6 100644
--- a/lib/growth/calc/centile.ex
+++ b/lib/growth/calc/centile.ex
@@ -9,17 +9,17 @@ defmodule Growth.Calc.Centile do
     Enum.map(measures, &apply(Growth.Calc.Centile, :compute, &1))
   """
 
+  alias Growth.Calc.ZScore
+
   # TODO: (jpd) add documentation and typespecs
 
   def compute(y, l, m, s) do
-    zscore = Growth.Calc.ZScore.raw(y, l, m, s)
+    zscore = ZScore.raw(y, l, m, s)
 
-    cond do
-      -3 <= zscore and zscore <= 3 ->
-        m * :math.pow(1 + l * s * zscore, 1 / l)
-
-      true ->
-        :na
+    if -3 <= zscore and zscore <= 3 do
+      m * :math.pow(1 + l * s * zscore, 1 / l)
+    else
+      :na
     end
   end
 end