```csharp
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static uint ReverseEndianness(uint value)
{
    // This takes advantage of the fact that the JIT can detect
    // ROL32 / ROR32 patterns and output the correct intrinsic.
    //
    // Input: value = [ ww xx yy zz ]
    //
    // First line generates : [ zz ww xx yy ]
    //                      & [ FF 00 FF 00 ]
    //                      = [ zz 00 xx 00 ]
    //
    // Second line generates: [ xx yy zz ww ]
    //                      & [ 00 FF 00 FF ]
    //                      = [ 00 yy 00 ww ]
    //
    //                (sum) = [ zz yy xx ww ]
    return (((value >> 8) | (value << 24)) & 0xFF00FF00U)
        + (((value << 8) | (value >> 24)) & 0x00FF00FFU);
}
```

Generated assembly:

```asm
00007FFBBB705CA0  mov         eax,ecx
00007FFBBB705CA2  rol         eax,18h
00007FFBBB705CA5  and         eax,0FF00FF00h
00007FFBBB705CAA  rol         ecx,8
00007FFBBB705CAD  and         ecx,0FF00FFh
00007FFBBB705CB3  add         eax,ecx
00007FFBBB705CB5  ret
```