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Streaming SIMD Extensions 2 Instructions

This section describes the C/C++ language-level features supporting the Streaming SIMD Extensions 2 (SSE2) instructions:

Other topics discussed in this section include:

The emmintrin.h header file contains the declarations for the SSE2 instructions intrinsics. The file dvec.h contains operator overloads for some of the SSE2 instructions intrinsics, which are available for use in C++ programs.

SSE2 intrinsics use the __m128, __m128i, and __m128d data types, which are not supported on Itanium Processor Family (IPF) processors. Any SSE2 intrinsics that use the __m64 data type are not supported on x64 processors.

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