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am c05d35db: Merge "fix [4026375] SensorManager quaternion functions can call sqrt with a negative number [DO NOT MERGE]" into gingerbread

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* commit 'c05d35db1c57de97888f16ed74718e4c676e4a9b':
  fix [4026375] SensorManager quaternion functions can call sqrt with a negative number [DO NOT MERGE]
This commit is contained in:
Mathias Agopian
2011-03-09 16:57:28 -08:00
committed by Android Git Automerger
parent 8df2477c4e c05d35db1c
commit a7c836ddc0
1 changed files with 2 additions and 2 deletions
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4
core/java/android/hardware/SensorManager.java
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@ -2026,8 +2026,8 @@ public class SensorManager
if (rv.length == 4) { if (rv.length == 4) {
Q[0] = rv[3]; Q[0] = rv[3];
} else { } else {
//In this case, the w component of the quaternion is known to be a positive number Q[0] = 1 - rv[0]*rv[0] - rv[1]*rv[1] - rv[2]*rv[2];
Q[0] = (float)Math.sqrt(1 - rv[0]*rv[0] - rv[1]*rv[1] - rv[2]*rv[2]); Q[0] = (Q[0] > 0) ? (float)Math.sqrt(Q[0]) : 0;
} }
Q[1] = rv[0]; Q[1] = rv[0];
Q[2] = rv[1]; Q[2] = rv[1];