Method FloatMath.sqrt() not found

Question

I'm using the new Android Marshmallow SDK and the method FloatMath.sqrt() is gone. What should I use now?

rekire · Accepted Answer · 2015-08-18 06:35:50Z

245

The documentations say this:

Historically these methods were faster than the equivalent double-based java.lang.Math methods. On versions of Android with a JIT they became slower and have since been re-implemented to wrap calls to java.lang.Math. java.lang.Math should be used in preference.

All methods were removed from the public API in version 23.

@deprecated Use java.lang.Math instead.

This means the solution is to use the Math class:

(float)Math.sqrt(...)

answered Aug 18, 2015 at 6:35

rekire

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3 Comments

manfcas Over a year ago

Ok, but what if it is referenced from a library, and Proguard is complaining?

rekire Over a year ago

I patched that library since I had it as part of my project. However you can implement a wrapper by your own, where you call the existing method.

Muaz Sep 29, 2025 at 6:19

I am migrating an old Android Project and found this. Thanks

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