atomic_sub_return
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## Name

atomic_sub_return — subtract integer and return

## Synopsis

`int atomic_sub_return (` | 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 `v` - `i`

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