hello, please insert following simple but useful roundings in new lib math.

def rnd(x, n=0):
   a = x*10**n
   b = int(a)
   if abs(a - b) >= 0.5: b += 1 if x >= 0 else -1
   return b/10**n

def rndup(x, n=0):
   a = x*10**n
   b = int(a)
   if abs(a - b) > 0: b += 1 if x >= 0 else -1
   return b/10**n

thanks a lot, marco.