Boost and namespace issues won't compile on OSX

[walchko]

Needed to add namespace: std::isnan() and needed to add rosbuild_link_boost(imu_filter signals) to CMakeLists.txt. Diff

[kevin@tardis imu_filter_madgwick]$ git diff
diff --git a/imu_filter_madgwick/CMakeLists.txt b/imu_filter_madgwick/CMakeLists
index f0ae3a6..662bb22 100644
--- a/imu_filter_madgwick/CMakeLists.txt
+++ b/imu_filter_madgwick/CMakeLists.txt
@@ -16,6 +16,7 @@ set(LIBRARY_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/lib)

 # create imu_filter library
 rosbuild_add_library (imu_filter src/imu_filter.cpp)
+rosbuild_link_boost(imu_filter signals)

 # create imu_filter_nodelet library
 rosbuild_add_library (imu_filter_nodelet src/imu_filter_nodelet.cpp)
diff --git a/imu_filter_madgwick/src/imu_filter.cpp b/imu_filter_madgwick/src/im
index 7f5c11e..5c13246 100644
--- a/imu_filter_madgwick/src/imu_filter.cpp
+++ b/imu_filter_madgwick/src/imu_filter.cpp
@@ -163,7 +163,7 @@ void ImuFilter::madgwickAHRSupdate(
        float _2q0mx, _2q0my, _2q0mz, _2q1mx, _2bx, _2bz, _4bx, _4bz, _2q0, _2q1

        // Use IMU algorithm if magnetometer measurement invalid (avoids NaN in 
-       if(isnan(mx) || isnan(my) || isnan(mz))
+       if(std::isnan(mx) || std::isnan(my) || std::isnan(mz))
   {
                madgwickAHRSupdateIMU(gx, gy, gz, ax, ay, az, dt);
                return;

[ccny-ros-pkg]

Fixed. Thank you for the ticket.