New ieee754 arithmetic, Fix for KT-14651: Floating point comparisons shall operate according to IEEE754

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

@@ -0,0 +1,14 @@
+// IGNORE_BACKEND: JS
+fun box(): String {
+    val plusZero: Double? = 0.0
+    val minusZero: Double = -0.0
+    if (plusZero?.equals(minusZero) ?: null!!) {
+        return "fail 1"
+    }
+
+    if (plusZero?.compareTo(minusZero) ?: null!! != 1) {
+        return "fail 2"
+    }
+
+    return "OK"
+}