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- wheezy 3.2.78-1
| TEST_AND_CHANGE_BIT(9) | Basic C Library Functions | TEST_AND_CHANGE_BIT(9) |
NAME¶
test_and_change_bit - Change a bit and return its old valueSYNOPSIS¶
int
test_and_change_bit(int nr,
volatile unsigned long * addr);
ARGUMENTS¶
nrBit to change
addr
Address to count from
DESCRIPTION¶
This operation is atomic and cannot be reordered. It also implies a memory barrier.COPYRIGHT¶
| March 2016 | Kernel Hackers Manual 3.2. |