ProperNumberComparisons is disabled by default (until LDC decision)

compiler/testData/codegen/box/ieee754/comparableToTWithT_properIeeeComparisons.kt

@@ -0,0 +1,11 @@
+// !LANGUAGE: +ProperIeee754Comparisons
+
+fun less(x: Comparable<Float>, y: Float) = x is Float && x < y
+fun less(x: Comparable<Double>, y: Double) = x is Double && x < y
+
+fun box(): String {
+    if (less(-0.0F, 0.0F)) return "Fail F"
+    if (less(-0.0, 0.0)) return "Fail D"
+
+    return "OK"
+}