__all__ = ['ones', 'empty', 'identity', 'zeros']

import numpy.core.multiarray as mu
import numpy.core.numeric as nn
from typeconv import convtypecode
    
def ones(shape, typecode='l', savespace=0, dtype=None):
    """ones(shape, dtype=int) returns an array of the given
    dimensions which is initialized to all ones.
    """
    dtype = convtypecode(typecode,dtype)
    a = mu.empty(shape, dtype)
    a.fill(1)
    return a

def zeros(shape, typecode='l', savespace=0, dtype=None):
    """zeros(shape, dtype=int) returns an array of the given
    dimensions which is initialized to all zeros
    """
    dtype = convtypecode(typecode,dtype)            
    return mu.zeros(shape, dtype)

def identity(n,typecode='l', dtype=None):
    """identity(n) returns the identity 2-d array of shape n x n.
    """
    dtype = convtypecode(typecode, dtype)
    return nn.identity(n, dtype)

def empty(shape, typecode='l', dtype=None):
    dtype = convtypecode(typecode, dtype)    
    return mu.empty(shape, dtype, order)