core::arch::x86

Function _mm_maskz_getexp_round_ss

source 
pub unsafe fn _mm_maskz_getexp_round_ss(
    k: __mmask8,
    a: __m128,
    b: __m128,
    const SAE: i32,
) -> __m128
🔬This is a nightly-only experimental API. (stdarch_x86_avx512 #111137)
Available on (x86 or x86-64) and target feature avx512f and x86 only.
Expand description

Convert the exponent of the lower single-precision (32-bit) floating-point element in b to a single-precision (32-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 3 packed elements from a to the upper elements of dst. This intrinsic essentially calculates floor(log2(x)) for the lower element.
Exceptions can be suppressed by passing _MM_FROUND_NO_EXC in the sae parameter.

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