The Linux Kernel API
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atomic_sub_and_test

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. Note that the guaranteed useful range of an atomic_t is only 24 bits.

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