1TEST_AND_CLEAR_BIT(9)      Basic C Library Functions     TEST_AND_CLEAR_BIT(9)
2
3
4

NAME

6       test_and_clear_bit - Clear a bit and return its old value
7

SYNOPSIS

9       int test_and_clear_bit(int nr, volatile unsigned long * addr);
10

ARGUMENTS

12       nr
13           Bit to clear
14
15       addr
16           Address to count from
17

DESCRIPTION

19       This operation is atomic and cannot be reordered. It also implies a
20       memory barrier.
21

23Kernel Hackers Manual 3.10         June 2019             TEST_AND_CLEAR_BIT(9)
Impressum