Fixes #1231: enable fast FP reads/writes by default

release-notes/VERSION

@@ -41,6 +41,7 @@ JSON library.
 #1090: Remove `BufferRecyclers.SYSTEM_PROPERTY_TRACK_REUSABLE_BUFFERS`
 #1125: Remove `TokenStreamFactory.Feature.USE_THREAD_LOCAL_FOR_BUFFER_RECYCLING`
 #1200: Change `JsonWriteFeature.ESCAPE_FORWARD_SLASHES` default to `true` for 3.0
+#1231: Enable Fast Floating-Point reading/writing by default in 3.0
 - Rename `JsonGenerator.Feature.AUTO_CLOSE_JSON_CONTENT` as `AUTO_CLOSE_CONTENT`
 - Add `TreeCodec.nullNode()`, `TreeNode.isNull()` methods
 - Change the way `JsonLocation.NA` is included in exception messages

src/main/java/tools/jackson/core/StreamReadFeature.java

@@ -94,22 +94,24 @@ public enum StreamReadFeature
     INCLUDE_SOURCE_IN_LOCATION(false),
 
     /**
-     * Feature that determines whether we use the built-in {@link Double#parseDouble(String)} code to parse
-     * doubles or if we use {@code FastDoubleParser}
-     * instead.
+     * Feature that determines whether to use the built-in JDK {@link Double#parseDouble(String)}
+     * code to parse {@code double}s (if {@code disabled})
+     * or {@code FastDoubleParser} implementation (if {@code enabled}).
      *<p>
-     * This setting is disabled by default.
+     * This setting is enabled by default (since 3.0) so that {@code FastDoubleParser}
+     * implementation is used.
      */
-    USE_FAST_DOUBLE_PARSER(false),
+    USE_FAST_DOUBLE_PARSER(true),
 
     /**
-     * Feature that determines whether to use the built-in Java code for parsing
-     * <code>BigDecimal</code>s and <code>BigIntegers</code>s or to use
-     * {@code FastDoubleParser} instead.
+     * Feature that determines whether to use the built-in JDK code for parsing
+     * <code>BigDecimal</code> and <code>BigIntegers</code> values (if {@code disabled})
+     * or {@code FastDoubleParser} implementation (if {@code enabled}).
      *<p>
-     * This setting is disabled by default.
+     * This setting is enabled by default (since 3.0) so that {@code FastDoubleParser}
+     * implementation is used.
      */
-    USE_FAST_BIG_NUMBER_PARSER(false)
+    USE_FAST_BIG_NUMBER_PARSER(true)
 
     ;
 

src/main/java/tools/jackson/core/StreamWriteFeature.java

@@ -113,14 +113,13 @@ public enum StreamWriteFeature
     // // Misc other features
 
     /**
-     * Feature that determines whether to use standard Java code to write floats/doubles
-     * (default) or use the Schubfach algorithm which is faster.
+     * Feature that determines whether to use standard JDK methods to write floats/doubles
+     * or use faster Schubfach algorithm.
      * The latter approach may lead to small differences in the precision of the
      * float/double that is written to the JSON output.
      *<p>
-     * Feature is disabled by default, meaning that slower JDK default conversions are used.
-     *
-     * @since 2.14
+     * This setting is enabled by default (since 3.0) so that faster Schubfach
+     * implementation is used.
      */
     USE_FAST_DOUBLE_WRITER(false)
     ;