# 1.27.0[−][src]Function core::arch::x86_64::_mm_cvtsd_ss

    pub unsafe fn _mm_cvtsd_ss(a: __m128, b: __m128d) -> __m128

This is supported on x86-64 and target feature `sse2` only.

Converts the lower double-precision (64-bit) floating-point element in `b` to a single-precision (32-bit) floating-point element, store the result in the lower element of the return value, and copies the upper element from `a` to the upper element the return value.

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