From 9307bba111336f27d04d81bfbfae173b5c2dfbf0 Mon Sep 17 00:00:00 2001
From: SpacePossum <possumfromspace@gmail.com>
Date: Wed, 16 Nov 2016 11:04:17 +0100
Subject: [PATCH] Simplify power

---
 lib/Twig/Node/Expression/Binary/Power.php     |  4 ++++
 .../Tests/Fixtures/expressions/power.test     | 20 +++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 test/Twig/Tests/Fixtures/expressions/power.test

diff --git a/lib/Twig/Node/Expression/Binary/Power.php b/lib/Twig/Node/Expression/Binary/Power.php
index cd6d04627..76f3a8c86 100644
--- a/lib/Twig/Node/Expression/Binary/Power.php
+++ b/lib/Twig/Node/Expression/Binary/Power.php
@@ -12,6 +12,10 @@ class Twig_Node_Expression_Binary_Power extends Twig_Node_Expression_Binary
 {
     public function compile(Twig_Compiler $compiler)
     {
+        if (PHP_VERSION_ID >= 50600) {
+            return parent::compile($compiler);
+        }
+
         $compiler
             ->raw('pow(')
             ->subcompile($this->getNode('left'))
diff --git a/test/Twig/Tests/Fixtures/expressions/power.test b/test/Twig/Tests/Fixtures/expressions/power.test
new file mode 100644
index 000000000..eacc98f86
--- /dev/null
+++ b/test/Twig/Tests/Fixtures/expressions/power.test
@@ -0,0 +1,20 @@
+--TEST--
+Twig parses power expressions
+--TEMPLATE--
+{{ 2**3 }}
+{{ (-2)**3 }}
+{{ (-2)**(-3) }}
+{{ a ** a }}
+{{ a ** b }}
+{{ b ** a }}
+{{ b ** b }}
+--DATA--
+return array('a' => 4, 'b' => -2);
+--EXPECT--
+8
+-8
+-0.125
+256
+0.0625
+16
+0.25