KT-48232: Implement kotlin.math.cbrt() (cubic roots)

cbrt() is the standard cubic root function that provides several advantages over pow(x, 1.0/3.0):
- Better precision
- Faster
- Behaves better with negative values

libraries/stdlib/common/src/kotlin/MathH.kt

@@ -354,6 +354,22 @@ public expect fun min(a: Double, b: Double): Double
 @SinceKotlin("1.2")
 public expect fun max(a: Double, b: Double): Double
 
+
+/**
+ * Returns the cube root of [x]. For any `x`, `cbrt(-x) == -cbrt(x)`;
+ * that is, the cube root of a negative value is the negative of the cube root
+ * of that value's magnitude. Special cases:
+ *
+ * Special cases:
+ *   - If the argument is `NaN`, then the result is `NaN`.
+ *   - If the argument is infinite, then the result is an infinity with the same sign as the argument.
+ *   - If the argument is zero, then the result is a zero with the same sign as the argument.
+ */
+@SinceKotlin("1.7")
+@ExperimentalStdlibApi
+public expect fun cbrt(x: Double): Double
+
+
 // extensions
 
 /**
@@ -817,6 +833,22 @@ public expect fun min(a: Float, b: Float): Float
 @SinceKotlin("1.2")
 public expect fun max(a: Float, b: Float): Float
 
+
+/**
+ * Returns the cube root of [x]. For any `x`, `cbrt(-x) == -cbrt(x)`;
+ * that is, the cube root of a negative value is the negative of the cube root
+ * of that value's magnitude. Special cases:
+ *
+ * Special cases:
+ *   - If the argument is `NaN`, then the result is `NaN`.
+ *   - If the argument is infinite, then the result is an infinity with the same sign as the argument.
+ *   - If the argument is zero, then the result is a zero with the same sign as the argument.
+ */
+@SinceKotlin("1.7")
+@ExperimentalStdlibApi
+public expect fun cbrt(x: Float): Float
+
+
 // extensions