atomic_sub_and_test(9) centos man page | unix.com

ATOMIC_SUB_AND_TEST(9)						   Driver Basics					    ATOMIC_SUB_AND_TEST(9)

NAME
       atomic_sub_and_test - subtract value from variable and test result

SYNOPSIS
       int atomic_sub_and_test(int i, atomic_t * v);

ARGUMENTS
       i
	   integer value to subtract

       v
	   pointer of type atomic_t

DESCRIPTION
       Atomically subtracts i from v and returns true if the result is zero, or false for all other cases.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						    ATOMIC_SUB_AND_TEST(9)