RtlUlonglongByteSwap macro (wdm.h)
The RtlUlonglongByteSwap routine reverses the ordering of the eight bytes in a 64-bit unsigned integer value.
Syntax
NTSYSAPI ULONGLONG RtlUlonglongByteSwap(
ULONGLONG Source
);
Parameters
Source
A ULONGLONG value to convert to a byte-swapped version.
Return value
The byte-swapped version of the input parameter value.
Remarks
For example, if the Source parameter value is 0x0123456789abcdef, the routine returns 0xefcdab8967452301.
A typical use of this routine is to convert a ULONGLONG value from little-endian byte format to big-endian byte format, and vice versa.
To reverse the ordering of bytes in a USHORT value, use the RtlUshortByteSwap routine. To reverse ordering of bytes in a ULONG value, use the RtlUlongByteSwap routine.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 2000. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | Any level |