NumericRange[Double].foreach() doesn't match apply(idx) due to floating point rounding #9875
Description
NumericRange[Double].foreach() method in exposes different values than its apply(idx) due to floating point error accumulation. That results in weird behavior if one mixes Traversable-based and IndexedSeq-based apis.
val r1 = new NumericRange.Inclusive[Double](1.0, 3.0, 0.2)(scala.math.Numeric.DoubleAsIfIntegral)
val r2 = new NumericRange.Inclusive[Double](1.0, 3.0, 0.2)(scala.math.Numeric.DoubleAsIfIntegral) {
override def foreach[U](f: Double => U): Unit = {(0 until length).foreach(i => f(apply(i)))}
}
println(s"r1(3)==${r1(3)}, r1.toList.drop(3).head=${r1.toList.drop(3).head}")
//1.6, 1.59999
println(s"r2(3)==${r2(3)}, r2.toList.drop(3).head=${r2.toList.drop(3).head}")
//1.6, 1.6