TEST_AND_CLEAR_BIT(9) Basic C Library Functions TEST_AND_CLEAR_BIT(9)NAMEtest_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.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 TEST_AND_CLEAR_BIT(9)