Function _mm256_getexp_pd

#[target_feature(enable = "avx512f", enable = "avx512vl")]
pub fn _mm256_getexp_pd(a: __m256d) -> __m256d

Convert the exponent of each packed double-precision (64-bit) floating-point element in a to a double-precision (64-bit) floating-point number representing the integer exponent, and store the results in dst. This intrinsic essentially calculates floor(log2(x)) for each element.

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