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Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.

x86 Intrinsics

The Visual C++ compiler makes the following intrinsics available on the x86 architecture.

In addition, the Visual C++ compiler supports intrinsics for MMX, Streaming SIMD Extensions (SSE), and Streaming SIMD Extensions 2 (SSE2). For more information, see MMX, SSE, and SSE2 Intrinsics. Also, many functions in the CRT are implemented as intrinsics on the x86 platform.

The following functions, with or without the preceding underscore, are available only when you specify the /Ze compiler option to enable Microsoft extensions:

_inp

inp

_inpd

inpd

_inpw

inpw

_outp

outp

_outpd

outpd

_outpw

outpw

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