_mm_mask_getexp_round_sd in core::arch::x86_64 - Rust
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 writemask k (the element is copied from src 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. Exceptions can be suppressed by passing _MM_FROUND_NO_EXC in the sae parameter.
Keywords: rust, rustlang, rust-lang, _mm_mask_getexp_round_sd

# Function core::arch::x86_64::_mm_mask_getexp_round_sd
[−][src]

    pub unsafe fn _mm_mask_getexp_round_sd<const SAE: i32>(
        src: __m128d,
        k: __mmask8,
        a: __m128d,
        b: __m128d
    ) -> __m128d

🔬 This is a nightly-only experimental API. (`stdsimd` #48556)
This is supported on x86-64 and target feature `avx512f` 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 writemask k (the element is copied from src 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.
Exceptions can be suppressed by passing _MM_FROUND_NO_EXC in the sae parameter.

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