convert_i32x4_s: Wasm SIMD conversion instruction

The convert_i32x4_s SIMD conversion instruction converts the lanes of a signed v128 i32x4 value interpretation into an f32x4 value interpretation.

Try it

(module
  (import "console" "log" (func $log (param f32)))
  (func $main
    v128.const i32x4 0x3 0x3a 0xa9 0xff

    f32x4.convert_i32x4_s
    f32x4.extract_lane 3
    call $log ;; log the result
  )
  (start $main)
)
WebAssembly.instantiateStreaming(fetch("{%wasm-url%}"), { console });

Syntax

value_type.convert_i32x4_s
value_type

The type of value the instruction is being run on. The following v128 value interpretations support convert_i32x4_s:

  • f32x4
convert_i32x4_s

The convert_i32x4_s instruction. Must always be included after the value_type and a period (.).

Type

[input] -> [output]
input

The input v128 i32x4 value interpretation.

output

The output v128 f32x4 value interpretation.

Binary encoding

Instruction Binary format Example text => binary
f32x4.convert_i32x4_s 0xfd 250:u32 f32x4.convert_i32x4_s => 0xfd 0xfa 0x01

Specifications

This feature does not appear to be defined in any specification.

Browser compatibility

See also