Add root function to math library.

src/math/p_root.c

@@ -0,0 +1,30 @@
+#include <pal.h>
+
+/**
+ *
+ * Calculate 'a' radicand to the index 'b'
+ *
+ * @param a     Pointer to input vector
+ *
+ * @param b     Pointer to input vector
+ *
+ * @param c     Pointer to output vector
+ *
+ * @param n     Size of 'a' and 'c' vector.
+ *
+ * @param p     Number of processor to use (task parallelism)
+ *
+ * @param team  Team to work with 
+ *
+ * @return      None
+ *
+ */
+#include <math.h>
+void p_root_f32(float *a, float *b, float *c, int n, int p, p_team_t team)
+{
+
+    int i;
+    for (i = 0; i < n; i++) {
+        *(c + i) = powf(*(a + i), 1/(*(b + i)));
+    }
+}