From 2b9478f4302c22f642301f7488e66e0e8fb1f9a4 Mon Sep 17 00:00:00 2001
From: Lucas De Marchi <lucas.demarchi@intel.com>
Date: Wed, 1 Feb 2017 22:42:36 -0800
Subject: [PATCH] AP_Math: tests: make both arguments double

libraries/AP_Math/tests/test_math.cpp.3.o: In function `MathTest_IsEqual_Test::TestBody()':
test_math.cpp:(.text._ZN21MathTest_IsEqual_Test8TestBodyEv+0x1a0): undefined reference to `std::enable_if<std::is_floating_point<std::common_type<float, double>::type>::value, bool>::type is_equal<float, double>(float, double)'
collect2: error: ld returned 1 exit status
---
 libraries/AP_Math/tests/test_math.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/AP_Math/tests/test_math.cpp b/libraries/AP_Math/tests/test_math.cpp
index 8912f5fcd1..32be7c2de0 100644
--- a/libraries/AP_Math/tests/test_math.cpp
+++ b/libraries/AP_Math/tests/test_math.cpp
@@ -84,7 +84,7 @@ TEST(MathTest, IsEqual)
     EXPECT_TRUE(is_equal(1.f, (float)(1.f - DBL_EPSILON)));
 
     // false because the common type is double
-    EXPECT_FALSE(is_equal(1., 1. + 2 * std::numeric_limits<double>::epsilon()));
+    EXPECT_FALSE(is_equal(double(1.), 1 + 2 * std::numeric_limits<double>::epsilon()));
 
     // true because the common type is float
     EXPECT_TRUE(is_equal(1.f, (float)(1. + std::numeric_limits<double>::epsilon())));