# Function _mm_maskz_getexp_sd

1.89.0 · Source

    pub fn _mm_maskz_getexp_sd(k: __mmask8, a: __m128d, b: __m128d) -> __m128d

Available on (x86 or x86-64) and target feature `avx512f` and x86 only.
Expand description

Convert the exponent of the lower double-precision (64-bit) floating-point element in b to a double-precision (64-bit) floating-point number representing the integer exponent, store the result in the lower element of dst using zeromask k (the element is zeroed out when mask bit 0 is not set), and copy the upper element from a to the upper element of dst. This intrinsic essentially calculates floor(log2(x)) for the lower element.

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