Function core::arch::wasm32::f64x2_promote_low_f32x4

pub unsafe fn f64x2_promote_low_f32x4(a: v128) -> v128

🔬 This is a nightly-only experimental API. (wasm_simd #74372)

This is supported on WebAssembly and target feature simd128 only.

Conversion of the two lower single-precision floating point lanes to the two double-precision lanes of the result.