RFR: JDK-8304423: Refactor FdLibm.java

[Raffaello Giulietti]

On Sun, 23 Apr 2023 22:34:43 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> Minor refactoring of FdLibm.java; will consider future refactorings with more substantive code changes in the future.

src/java.base/share/classes/java/lang/FdLibm.java line 76:

> 74:     private static final int SIGN_BIT        = 0x8000_0000;
> 75:     private static final int EXP_BITS        = 0x7ff0_0000;
> 76:     private static final int EXP_SIGNIF_BITS = 0x7fff_ffff;

These could be expressed in terms of the constants in `Double`. But perhaps it's not worth doing so, after all, as the reader is assumed to be quite knowledgeable.

Otherwise LGTM.

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PR Review Comment: https://git.openjdk.org/jdk/pull/13604#discussion_r1175183371