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test_and_clear_bit(9) - phpMan

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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
       bool test_and_clear_bit(long 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 4.8.                 January 2017                     TEST_AND_CLEAR_BIT(9)


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