SI-8102 -0.0.abs must equal 0.0

SI-8102 points out that -0.0.abs returns -0.0 (in error). The same issue
exists for -0.0f. This commit fixes the issue for both by delegating to
math.abs.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/library/scala/math/Numeric.scala b/src/library/scala/math/Numeric.scala
index e6644c0dfc..eafbf96993 100644
--- a/src/library/scala/math/Numeric.scala
+++ b/src/library/scala/math/Numeric.scala
@@ -127,6 +127,8 @@ object Numeric {
     def toLong(x: Float): Long = x.toLong
     def toFloat(x: Float): Float = x
     def toDouble(x: Float): Double = x.toDouble
+    // logic in Numeric base trait mishandles abs(-0.0f)
+    override def abs(x: Float): Float = math.abs(x)
   }
   trait FloatIsFractional extends FloatIsConflicted with Fractional[Float] {
     def div(x: Float, y: Float): Float = x / y
@@ -149,6 +151,8 @@ object Numeric {
     def toLong(x: Double): Long = x.toLong
     def toFloat(x: Double): Float = x.toFloat
     def toDouble(x: Double): Double = x
+    // logic in Numeric base trait mishandles abs(-0.0)
+    override def abs(x: Double): Double = math.abs(x)
   }
   trait DoubleIsFractional extends DoubleIsConflicted with Fractional[Double] {
     def div(x: Double, y: Double): Double = x / y