Intel® C++ Compiler Classic Developer Guide and Reference
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Visible to Intel only — GUID: GUID-B324A4FA-4F8D-4420-9479-AC07DD7CE820
<span class='option'> _mm256_castsi256_si128</span>
Typecasts 256-bit integer values to 128-bit integer values. No corresponding Intel® AVX instruction.
extern __m128i _mm256_castsi256_si128(__m256i a); |
a |
256-bit integer source vector |
Performs a typecast operation from 256-bit integer values to 128-bit integer values.
The lower 128-bits of the source vector are passed unchanged to the result. This intrinsic does not introduce extra moves to the generated code.
A vector with 128-bit integer values.