Provide isInfinite() and isFinite() functions for Double and Float.

#KT-7126 Fixed

libraries/stdlib/src/kotlin/util/Numbers.kt

@@ -10,4 +10,25 @@ public fun Double.isNaN(): Boolean = this != this
  * Returns `true` if the specified number is a
  * Not-a-Number (NaN) value, `false` otherwise.
  */
-public fun Float.isNaN(): Boolean = this != this
+public fun Float.isNaN(): Boolean = this != this
+
+/**
+ * Returns `true` if this value is infinitely large in magnitude.
+ */
+public fun Double.isInfinite(): Boolean = this == Double.POSITIVE_INFINITY || this == Double.NEGATIVE_INFINITY
+
+/**
+ * Returns `true` if this value is infinitely large in magnitude.
+ */
+public fun Float.isInfinite(): Boolean = this == Float.POSITIVE_INFINITY || this == Float.NEGATIVE_INFINITY
+
+/**
+ * Returns `true` if the argument is a finite floating-point value; returns `false` otherwise (for `NaN` and infinity arguments).
+ */
+public fun Double.isFinite(): Boolean = !isInfinite() && !isNaN()
+
+/**
+ * Returns `true` if the argument is a finite floating-point value; returns `false` otherwise (for `NaN` and infinity arguments).
+ */
+public fun Float.isFinite(): Boolean = !isInfinite() && !isNaN()
+