The any_true SIMD bitwise instruction tests whether an v128 input value contains any non-zero bits.

(module
  (import "console" "log" (func $log (param i32)))
  (func $main
    v128.const f32x4 0 0 0 1.2
    v128.any_true

    call $log ;; log the result
  )
  (start $main)
)

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

Syntax

v128.any_true

• v128.any_true

  • : The v128.any_true instruction.

Type

[input] -> [output]

• input

  • : The input v128 value interpretation. This can be an integer type (for example, i16x8) or floating point type (for example, f32x4).

  output

  • : The output value. This is an i32 type equal to 1 if the v128 input contains any non-zero bits, or 0 if all bits are 0.

Binary encoding

InstructionBinary formatExample text => binaryv128.any_true0xfd 83:u32v128.any_true => 0xfd 0x53

Specifications

Browser compatibility