pub fn f64x2_lt(a: v128, b: v128) -> v128
target_family="wasm"and target feature
simd128and WebAssembly only.
Compares two 128-bit vectors as if they were two vectors of 2 sixty-four-bit floating point numbers.
Returns a new vector where each lane is all ones if the lane-wise left element is less than the right element, or all zeros otherwise.