narrow_i16x8_u: Wasm SIMD conversion instruction
The narrow_i16x8_u SIMD conversion instruction converts two signed v128 i16x8 value interpretations into an i8x16 value interpretation using unsigned saturation (clamping to the range between 0 to 255).
Try it
(module
(import "console" "log" (func $log (param i32)))
(func $main
v128.const i16x8 2 4 6 8 10 12 14 16
v128.const i16x8 18 20 22 24 26 28 30 32
i8x16.narrow_i16x8_u
i8x16.extract_lane_s 15
call $log ;; log the result
)
(start $main)
)
WebAssembly.instantiateStreaming(fetch("{%wasm-url%}"), { console });
Syntax
i8x16.narrow_i16x8_u
i8x16.narrow_i16x8_u-
The
i8x16.narrow_i16x8_uinstruction.
Type
[input1, input2] -> [output]
Binary encoding
| Instruction | Binary format | Example text => binary |
|---|---|---|
i8x16.narrow_i16x8_u |
0xfd 102:u32 |
i8x16.narrow_i16x8_u => 0xfd 0x66 |