Intel® C++ Compiler 16.0 User and Reference Guide
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.