ENH: use np.float as dtype

Author: Smit-create

quantecon/ecdf.py

@@ -51,4 +51,4 @@ def __call__(self, x):
         def f(a):
             return np.mean(self.observations <= a)
         vf = np.frompyfunc(f, 1, 1)
-        return vf(x)
+        return vf(x).astype(np.float)