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PR_AtomicDecrement
==================
Atomically decrements a 32-bit value.
Syntax
------
.. code::
#include <pratom.h>
PRInt32 PR_AtomicDecrement(PRInt32 *val);
Parameter
~~~~~~~~~
The function has the following parameter:
``val``
A pointer to the value to decrement.
Returns
~~~~~~~
The function returns the decremented value (i.e., the result).
Description
-----------
:ref:`PR_AtomicDecrement` first decrements the referenced variable by one.
The value returned is the referenced variable's final value. The
modification to memory is unconditional.