Intel® C++ Compiler 16.0 User and Reference Guide
Typecasts single-precision floating point values to double-precision floating point values. No corresponding Intel® AVX instruction.
extern __m256d _mm256_castps_pd(__m256 a); |
a |
float32 source vector |
Performs a typecast operation from single-precision floating point values (float32 values) to double-precision floating point values (float64 values). This intrinsic does not introduce extra moves to the generated code. Source operand bits are passed unchanged to the result.
A vector with double-precision floating point values.