Developer Guide and Reference

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_mm256_packus_epi16/32

Pack signed word/doubleword integers to unsigned byte/word integers and saturates. The corresponding Intel® AVX2 instruction is
VPACKUSWB
or
VPACKUSDW
.

Syntax

extern __m256i _mm256_packus_epi16(__m256i a, __m256i b);
extern __m256i _mm256_packus_epi32(__m256i a, __m256i b);
Arguments
a
integer source operand used for the operation
b
integer source operand used for the operation
Description
The
_mm256_packus_epi16
intrinsic converts 16 packed signed word integers from source operands
a
and
b
into 32 packed unsigned byte integers. The
_mm256_packus_epi32
intrinsic converts eight packed signed doubleword integers from the source operands
a
and
b
into 16 packed unsigned word integers.
Returns
Result of the pack operation.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804