InterlockedExchangeSubtract function (winbase.h)
Performs an atomic subtraction of two values.
Syntax
unsigned InterlockedExchangeSubtract(
[in, out] unsigned volatile *Addend,
[in] unsigned Value
);
Parameters
[in, out] Addend
A pointer to a variable. The value of this variable is replaced with the result of the operation.
[in] Value
The value to be subtracted from the variable pointed to by the Addend parameter.
Return value
The function returns the initial value of the Addend parameter.
Remarks
This function generates a full memory barrier (or fence) to ensure that memory operations are completed in order.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 7 [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2008 R2 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | winbase.h (include Windows.h) |