diff options
| author | 2011-02-14 16:34:07 -0800 | |
|---|---|---|
| committer | 2011-02-14 17:17:58 -0800 | |
| commit | 7b6e4bd697e76bfc44e59ad42666e758c091b7bf (patch) | |
| tree | d96b5cbf37d39f987ae02a61cff246203edcd91a | |
| parent | cfe8903441fa3fc13c774587fe96df8206d4ba7d (diff) | |
fix [3452750] Issue 14634: SensorManager.getRotationMatrixFromVector gets NaN-Values [external]
make sure to not pass negative numbers to sqrt().
Change-Id: Ifd200c781ae8a94c8a3c600401b60f4cf2430be3
related-bug: 3452750
| -rw-r--r-- | core/java/android/hardware/SensorManager.java | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/core/java/android/hardware/SensorManager.java b/core/java/android/hardware/SensorManager.java index f079e42a9993..1bd8ef525f1b 100644 --- a/core/java/android/hardware/SensorManager.java +++ b/core/java/android/hardware/SensorManager.java @@ -1970,7 +1970,8 @@ public class SensorManager if (rotationVector.length == 4) { q0 = rotationVector[3]; } else { - q0 = (float)Math.sqrt(1 - q1*q1 - q2*q2 - q3*q3); + q0 = 1 - q1*q1 - q2*q2 - q3*q3; + q0 = (q0 > 0) ? (float)Math.sqrt(q0) : 0; } float sq_q1 = 2 * q1 * q1; |