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  1. JDK
  2. JDK-8300869

Make use of the Double.toString(double) algorithm in java.util.Formatter

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      Methods `Double.toString(double)` and `AbstractStringBuilder.append(double)` make use of an algorithm integrated in JDK 19 [1], replacing the one used in earlier release; similarly for the `float` counterparts `Float.toString(float)` and `AbstractStringBuilder.append(float)`.

      Class `java.util.Formatter`, however, uses another algorithm to format `double` and `float` values. This can lead to small discrepancies w.r.t. the outcomes of the above methods in certain rare cases, and conflicts with the specification which is based on `Double.toString(double)`. Therefore, to match the specification, `java.util.Formatter` should replace the current algorithm with a variant of the new one tailored for formatted output.

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      [1] https://git.openjdk.java.net/jdk/commit/72bcf2aa03d53b0f68eb07a902575b4e8628d859

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            rgiulietti Raffaello Giulietti
            rgiulietti Raffaello Giulietti
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