Move and rework pow to math/SGMisc

2013-04-28 15:43:02 +02:00
parent fa64f7b6aa
commit e53c71543a
2 changed files with 33 additions and 29 deletions
@@ -58,6 +58,22 @@ public:
      return var = max(var - rate * dt, target);
  }

+  /**
+   * Get @c base raised to the power of @c N
+   *
+   * @tparam N      Exponent
+   * @param base    Base
+   */
+  template<int N>
+  static T pow(T base)
+  {
+    return (N < 0)
+      ? (1. / pow<-N>(base))
+      : (  ((N & 1) ? base : 1)
+        * ((N > 1) ? pow<N / 2>(base * base) : 1)
+        );
+  }
+
  static int sign(const T& a)
  {
    if (a < -SGLimits<T>::min())