RFR: 8316662: Remove one allocation per conversion in Double.toString(double) and Float.toString(float)

[ExE Boss]

On Thu, 21 Sep 2023 12:51:56 GMT, Raffaello Giulietti <rgiulietti at openjdk.org> wrote:

> By correctly sizing an intermediate `byte[]` and making use of the internal `newStringNoRepl()` method, one allocation per conversion can be avoided when the runtime uses compact strings.

These constant names should be in uppercase:

src/java.base/share/classes/jdk/internal/math/DoubleToDecimal.java line 110:

> 108:     private static final int NAN            = 5;
> 109: 
> 110:     private static final JavaLangAccess jla = SharedSecrets.getJavaLangAccess();

Suggestion:

    private static final JavaLangAccess JLA = SharedSecrets.getJavaLangAccess();

src/java.base/share/classes/jdk/internal/math/FloatToDecimal.java line 110:

> 108:     private static final int NAN            = 5;
> 109: 
> 110:     private static final JavaLangAccess jla = SharedSecrets.getJavaLangAccess();

Suggestion:

    private static final JavaLangAccess JLA = SharedSecrets.getJavaLangAccess();

-------------

PR Review: https://git.openjdk.org/jdk/pull/15861#pullrequestreview-1638247433
PR Review Comment: https://git.openjdk.org/jdk/pull/15861#discussion_r1333314116
PR Review Comment: https://git.openjdk.org/jdk/pull/15861#discussion_r1333316192