Home/ Questions/Q 3623010
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-18T23:19:49+00:00

I use doubles for a uniform implementation of some arithmetic calculations. These calculations may

  • 0

I use doubles for a uniform implementation of some arithmetic calculations. These calculations may be actually applied to integers too, but there are no C++-like templates in Java and I don’t want to duplicate the implementation code, so I simply use “double” version for ints.

Does JVM spec guarantees the correctness of integer operations such a <=,>=, +, -, *, and / (in case of remainder==0) when the operations are emulated as corresponding floating point ops?

(Any integer, of course, has reasonable size to be represented in double’s mantissa)

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    According to the Java Language Specification:

    Operators on floating-point numbers
    behave as specified by IEEE 754 (with
    the exception of the remainder
    operator (§15.17.3)).

    So you’re guaranteed uniform behaviour, and while I don’t have access to the official IEEE standard document, I’m pretty sure that it implicitly guarantees that operations on integers that can be represented exactly as a float/double work as expected.

    • 0