switch to cmath and std::isnan

src/tabcontrollers/ChaperoneTabController.cpp

@@ -1,7 +1,7 @@
 #include "ChaperoneTabController.h"
 #include <QQuickWindow>
 #include "../overlaycontroller.h"
-#include <math.h>
+#include <cmath>
 
 // application namespace
 namespace advsettings {
@@ -361,7 +361,7 @@ void ChaperoneTabController::eventLoopTick(vr::TrackedDevicePose_t* devicePoses,
 				poseHmd.mDeviceToAbsoluteTracking.m[1][3],
 				poseHmd.mDeviceToAbsoluteTracking.m[2][3]
 			});
-			if (!isnan(distanceHmd)) {
+			if (!std::isnan(distanceHmd)) {
 				minDistance = distanceHmd;
 			}
 		}
@@ -374,7 +374,7 @@ void ChaperoneTabController::eventLoopTick(vr::TrackedDevicePose_t* devicePoses,
 					poseLeft.mDeviceToAbsoluteTracking.m[1][3],
 					poseLeft.mDeviceToAbsoluteTracking.m[2][3]
 				});
-				if (!isnan(distanceLeft) && (isnan(minDistance) || distanceLeft < minDistance)) {
+				if (!std::isnan(distanceLeft) && (std::isnan(minDistance) || distanceLeft < minDistance)) {
 					minDistance = distanceLeft;
 				}
 			}
@@ -388,12 +388,12 @@ void ChaperoneTabController::eventLoopTick(vr::TrackedDevicePose_t* devicePoses,
 					poseRight.mDeviceToAbsoluteTracking.m[1][3],
 					poseRight.mDeviceToAbsoluteTracking.m[2][3]
 				});
-				if (!isnan(distanceRight) && (isnan(minDistance) || distanceRight < minDistance)) {
+				if (!std::isnan(distanceRight) && (std::isnan(minDistance) || distanceRight < minDistance)) {
 					minDistance = distanceRight;
 				}
 			}
 		}
-		if (!isnan(minDistance)) {
+		if (!std::isnan(minDistance)) {
 			handleChaperoneWarnings(minDistance);
 		}
 	}
@@ -1002,7 +1002,7 @@ float ChaperoneTabController::getBoundsMaxY() {
 			} else {
 				ci = 2;
 			}
-			if (isnan(result) || result < collisionBounds[b].vCorners[ci].v[1]) {
+			if (std::isnan(result) || result < collisionBounds[b].vCorners[ci].v[1]) {
 				result = collisionBounds[b].vCorners[ci].v[1];
 			}
 		}