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__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 
);

[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.

Intrinsic

Architecture

__shiftright128

IPF, x64

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.

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