trunc_sat_f64x2_s_zero: Wasm SIMD conversion instruction

The trunc_sat_f64x2_s_zero SIMD conversion instruction performs a saturating conversion of the lanes of a v128 f64x2 value interpretation into a signed i32x4 value interpretation, clamping the output to the range allowed by the value type. The two higher lanes of the result are initialized to zero.

Try it

(module
  (import "console" "log" (func $log (param i32)))
  (func $main
    v128.const f64x2 1300.5 1345400000.9

    i32x4.trunc_sat_f64x2_s_zero
    i32x4.extract_lane 1
    call $log ;; log the result
  )
  (start $main)
)

WebAssembly.instantiateStreaming(fetch("{%wasm-url%}"), { console });

Saturation means that the output values are clamped to the upper and lower values allowed by the value interpretation. Allowed output values are −2,147,483,648 to 2,147,483,647 (the full range of a signed 32-bit integer). NaN values are converted to 0.