axis : {None, int}, optional 
Axis along which to operate.  By default, axis is None and the
flattened input is used. 
 
out : array_like, optional 
Alternative output array in which to place the result.  Must
be of the same shape and buffer length as the expected output. 
 
fill_value : {var}, optional 
Value used to fill in the masked values.
If None, use the output of maximum_fill_value(). 
 
 |