From 4283eb7e32729782cddea70973824562acaaedfd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89milie=20Feral?= <emilie.feral@numworks.com>
Date: Mon, 7 Jan 2019 13:48:04 +0100
Subject: [PATCH] [poincare] Power: fix approximation

0^0 should be equal to undef
---
 poincare/src/power.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/poincare/src/power.cpp b/poincare/src/power.cpp
index e3a397372..6b3c37a4b 100644
--- a/poincare/src/power.cpp
+++ b/poincare/src/power.cpp
@@ -100,7 +100,7 @@ bool PowerNode::isReal(Context & context) const {
 template<typename T>
 Complex<T> PowerNode::compute(const std::complex<T> c, const std::complex<T> d) {
   std::complex<T> result;
-  if (c.imag() == 0.0 && d.imag() == 0.0 && (c.real() > 0.0 || std::round(d.real()) == d.real())) {
+  if (c.imag() == 0.0 && d.imag() == 0.0 && c.real() != 0.0 && (c.real() > 0.0 || std::round(d.real()) == d.real())) {
     /* pow: (R+, R) -> R+ (2^1.3 ~ 2.46)
      * pow: (R-, N) -> R+ ((-2)^3 = -8)
      * In these cases we rather use std::pow(double, double) because: