SI-7511 Remove indirection of numeric methods

Methods on `Rich<AnyVal>`s like `abs`, `doubleValue`, `floatValue`,
`longValue`, `intValue`, `byteValue`, `shortValue`, `min`, `max`,
`signum` are slow because they go through multiple indirections
including typeclasses and boxing.

For instance, take `1L.abs`:

Instead of just computing and returning the result (like it is done in
`RichInt`), this is what happens:

- `RichLong` inherits `abs` by extending `ScalaNumberProxy[T]`
- `ScalaNumberProxy[T]` has an abstract
  `protected implicit def num: Numeric[T]`
- This method is implemented in `RichLong` and points to
  `scala.math.Numeric.LongIsIntegral`
- The actual method `abs` now calls `num.abs(self)`

1 files changed, 1 insertions, 0 deletions

diff --git a/src/library/scala/math/ScalaNumericConversions.scala b/src/library/scala/math/ScalaNumericConversions.scala
index 336991781e..0006133b13 100644
--- a/src/library/scala/math/ScalaNumericConversions.scala
+++ b/src/library/scala/math/ScalaNumericConversions.scala
@@ -20,6 +20,7 @@ trait ScalaNumericConversions extends ScalaNumber with ScalaNumericAnyConversion
  *  across all the numeric types, suitable for use in value classes.
  */
 trait ScalaNumericAnyConversions extends Any {
+  /** @return `'''true'''` if this number has no decimal component, `'''false'''` otherwise. */
   def isWhole(): Boolean
   def underlying(): Any