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�Z dS )z(Functions for generating random numbers.� N)�common� transform)�nbits�returnc C sN t | d�\}}tj|�}|dkrJttjd��}|d| L }tjd|�| }|S )z�Reads 'nbits' random bits.
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r c C s t | �}|dB S )zhReads a random odd integer of approximately nbits bits.
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r )r )r r r r r �read_random_odd_int; s r )�maxvaluer c C sJ t j| �}d}x6t|�}|| kr"P |d dkr:|r:|d8 }|d7 }qW |S )z�Returns a random integer x with 1 <= x <= maxvalue
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