Function i8x16_narrow_i16x8

pub fn i8x16_narrow_i16x8(a: v128, b: v128) -> v128

Available on target_family="wasm" and target feature simd128 only.

Converts two input vectors into a smaller lane vector by narrowing each lane.

Signed saturation to 0x7f or 0x80 is used and the input lanes are always interpreted as signed integers.