test_and_clear_bit man page on Scientific
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TEST_AND_CLEAR_BIT(9)	   Basic C Library Functions	 TEST_AND_CLEAR_BIT(9)

NAME
       test_and_clear_bit - Clear a bit and return its old value

SYNOPSIS
       int test_and_clear_bit(int nr, volatile unsigned long * addr);

ARGUMENTS
       nr
	   Bit to clear

       addr
	   Address to count from

DESCRIPTION
       This operation is atomic and cannot be reordered. It also implies a
       memory barrier.

COPYRIGHT
Kernel Hackers Manual 2.6.	 November 2013		 TEST_AND_CLEAR_BIT(9)
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