Fix compiler warning

PaulStoffregen · Sep 17, 2022 · 9d2cf96 · 9d2cf96
1 parent 84e2b23
commit 9d2cf96
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/src/MahonyAHRS.cpp b/src/MahonyAHRS.cpp
@@ -249,10 +249,10 @@ void Mahony::updateIMU(float gx, float gy, float gz, float ax, float ay, float a
 float Mahony::invSqrt(float x)
 {
 	float halfx = 0.5f * x;
-	float y = x;
-	long i = *(long*)&y;
-	i = 0x5f3759df - (i>>1);
-	y = *(float*)&i;
+	union { float f; long l; } i;
+	i.f = x;
+	i.l = 0x5f3759df - (i.l >> 1);
+	float y = i.f;
 	y = y * (1.5f - (halfx * y * y));
 	y = y * (1.5f - (halfx * y * y));
 	return y;