Intel® oneAPI DPC++/C++ Compiler Developer Guide and Reference

ID 767253
Date 3/31/2023
Public

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Document Table of Contents

Integer Functions for Intel® Streaming SIMD Extensions

This topic contains information about Intel® Streaming SIMD Extensions (Intel® SSE) integer functions.

NOTE:
You must include the fvec.h header file.
  • Compute the element-wise maximum of the respective signed integer words in A and B:

    Is16vec4 simd_max(Is16vec4 A, Is16vec4 B);

    The corresponding intrinsic is: _mm_max_pi16

  • Compute the element-wise minimum of the respective signed integer words in A and B:

    Is16vec4 simd_min(Is16vec4 A, Is16vec4 B);

    The corresponding intrinsic is: _mm_min_pi16

  • Compute the element-wise maximum of the respective unsigned bytes in A and B:

    Iu8vec8 simd_max(Iu8vec8 A, Iu8vec8 B);

    The corresponding intrinsic is: _mm_max_pu8

  • Compute the element-wise minimum of the respective unsigned bytes in A and B:

    Iu8vec8 simd_min(Iu8vec8 A, Iu8vec8 B);

    The corresponding intrinsic is: _mm_min_pu8

  • Create an 8-bit mask from the most significant bits of the bytes in A:

    int move_mask(I8vec8 A);

    The corresponding intrinsic is: _mm_movemask_pi8

  • Conditionally store byte elements of A to address p. The high bit of each byte in the selector B determines whether the corresponding byte in A will be stored:

    void mask_move(I8vec8 A, I8vec8 B, signed char *p);

    The corresponding intrinsic is: _mm_maskmove_si64

  • Store the data in A to the address p without polluting the caches. A can be any Ivec type:

    void store_nta(__m64 *p, M64 A);

    The corresponding intrinsic is: _mm_stream_pi

  • Compute the element-wise average of the respective unsigned 8-bit integers in A and B:

    Iu8vec8 simd_avg(Iu8vec8 A, Iu8vec8 B);

    The corresponding intrinsic is: _mm_avg_pu8

  • Compute the element-wise average of the respective unsigned 16-bit integers in A and B:

    Iu16vec4 simd_avg(Iu16vec4 A, Iu16vec4 B)

    The corresponding intrinsic is: _mm_avg_pu16