What is the use of Strictfp method in java?

Question

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When to use “strictfp” keyword in java?

What is the use of Strictfp method in java?

Answer 1

strictfp is a method or class modifier that forces the JVM to do floating point math a certain way that is guaranteed to be the same across different JVM implementations (stopping the JVM from cutting corners to improve performance and possibly lose some precision / accuracy).

More information can be found on the wikipedia entry, but it's low on detail. Hardcore information (if you care) can be found in the JVM spec.

Answer 2

strictfp makes sure that the floating-point operations in the marked code will act the same across all platforms. It's something you might use in 2D/3D programming where you need to make certain you get exactly the same results regardless of what platform you run the program on.