__shiftright128

 

The new home for Visual Studio documentation is Visual Studio 2017 Documentation on docs.microsoft.com.

The latest version of this topic can be found at __shiftright128.

Microsoft Specific**

Shifts a 128-bit quantity, represented as two 64-bit quantities LowPart and HighPart, to the right by a number of bits specified by Shift and returns the low 64 bits of the result.

unsigned __int64 __shiftright128(   
   unsigned __int64 LowPart,   
   unsigned __int64 HighPart,   
   unsigned char Shift   
);  

Parameters

[in] LowPart
The low 64 bits of the 128-bit quantity to shift.

[in] HighPart
The high 64 bits of the 128-bit quantity to shift.

[in] Shift
The number of bits to shift.

The low 64 bits of the result.

IntrinsicArchitecture
__shiftright128x64

Header file <intrin.h>

The Shift value is always modulo 64 so that, for example, if you call __shiftright128(0, 1, 64), the function will shift the high part 0 bits right and return a low part of 0 and not 1 as might otherwise be expected.

For an example, see __shiftleft128.

__shiftleft128
Compiler Intrinsics

Show: