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Double-ended Queues

<!-- ##### SECTION Short_Description ##### -->

Double-ended queue data structure

<!-- ##### SECTION Long_Description ##### -->
<para>

</para>

<!-- ##### SECTION See_Also ##### -->
<para>

</para>

<!-- ##### STRUCT GQueue ##### -->
<para>

</para>

@head: 
@tail: 
@length: 

<!-- ##### FUNCTION g_queue_new ##### -->
<para>

</para>

@Returns: 


<!-- ##### FUNCTION g_queue_free ##### -->
<para>

</para>

@queue: 


<!-- ##### FUNCTION g_queue_push_head ##### -->
<para>

</para>

@queue: 
@data: 


<!-- ##### FUNCTION g_queue_push_tail ##### -->
<para>

</para>

@queue: 
@data: 


<!-- ##### FUNCTION g_queue_pop_head ##### -->
<para>

</para>

@queue: 
@Returns: 


<!-- ##### FUNCTION g_queue_pop_tail ##### -->
<para>

</para>

@queue: 
@Returns: 


<!-- ##### FUNCTION g_queue_is_empty ##### -->
<para>

</para>

@queue: 
@Returns: 


<!-- ##### FUNCTION g_queue_peek_head ##### -->
<para>

</para>

@queue: 
@Returns: 


<!-- ##### FUNCTION g_queue_peek_tail ##### -->
<para>

</para>

@queue: 
@Returns: 


<!-- ##### FUNCTION g_queue_push_head_link ##### -->
<para>

</para>

@queue: 
@link: 


<!-- ##### FUNCTION g_queue_push_tail_link ##### -->
<para>

</para>

@queue: 
@link: 


<!-- ##### FUNCTION g_queue_pop_head_link ##### -->
<para>

</para>

@queue: 
@Returns: 


<!-- ##### FUNCTION g_queue_pop_tail_link ##### -->
<para>

</para>

@queue: 
@Returns: 


