RtlUlongByteSwap macro (wdm.h)

The RtlUlongByteSwap routine reverses the ordering of the four bytes in a 32-bit unsigned integer value.

Syntax

NTSYSAPI ULONG RtlUlongByteSwap(
  [in] ULONG Source
);

Parameters

[in] Source

A ULONG value to convert to a byte-swapped version.

Return value

The byte-swapped version of the Source input parameter value.

Remarks

For example, if the Source parameter value is 0x12345678, the routine returns 0x78563412.

A typical use of this routine is to convert a ULONG value from little-endian byte format to big-endian byte format, and vice versa.

Use this routine instead of ntohl or htonl.

To reverse the ordering of bytes in a USHORT value, use the RtlUshortByteSwap routine. To reverse ordering of bytes in a ULONGLONG value, use the RtlUlonglongByteSwap routine.

Requirements

See also

RtlUlonglongByteSwap

RtlUshortByteSwap