error when running SlidingMenu FloatMath.sin(f)

[zz0001]

In CustomViewAbove.java, line 300,
float distanceInfluenceForSnapDuration(float f) { f -= 0.5f; // center the values about 0. f *= 0.3f * Math.PI / 2.0f; return (float) FloatMath.sin(f); }
"android.util.FloatMath is deprecated" and cannot reslove method sin(float).

I changed "FloatMath" to "Math" and it seems that I can run correctly.

[zz0001]

Same error found in AnimatorProxy.java, line 149
parent.invalidate(
(int) FloatMath.floor(after.left),
(int) FloatMath.floor(after.top),
(int) FloatMath.ceil(after.right),
(int) FloatMath.ceil(after.bottom));
}