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The RtlUInt8Sub routine subtracts one value of type UINT8 from another.
Syntax
NTSTATUS RtlUInt8Sub(
[in] UINT8 u8Minuend,
[in] UINT8 u8Subtrahend,
[out] UINT8 *pu8Result
);
Parameters
[in] u8Minuend
The value from which u8Subtrahend is subtracted.
[in] u8Subtrahend
The value to subtract from u8Minuend.
[out] pu8Result
A pointer to the result. If the operation results in a value that overflows or underflows the capacity of the type, the function returns STATUS_INTEGER_OVERFLOW and this parameter is not valid.
Return value
RtlUInt8Sub returns STATUS_SUCCESS if the routine is successful. Possible error return values include the following status code.
| Return code | Description |
|---|---|
|
An arithmetic overflow occurred. |
Remarks
This is one of a set of inline functions designed to provide arithmetic operations and perform validity checks with minimal impact on performance.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Desktop |
| Header | ntintsafe.h |