Greater or equal
The ge
instructions, short for greater or equal, check if a number is greater than or equal to another number. If the first number is greater than or equal to the second number equal 1
will be pushed on to the stack, otherwise 0
will be pushed on to the stack.
The integer types have separate greater or equal instructions for signed (ge_s
) and unsigned (ge_u
) numbers.
Try it
(module (import "env" "log_bool" (func $log_bool (param i32))) (func $main ;; load `10` and `2` onto the stack i32.const 10 i32.const 2 i32.ge_u ;; check if `10` is greater than or equal to '2' call $log_bool ;; log the result ) (start $main) )
const url = "{%wasm-url%}"; function log_bool(value) { console.log(Boolean(value)); // Expected output: true } await WebAssembly.instantiateStreaming(fetch(url), { env: { log_bool }, });
Syntax
wat
;; load 2 numbers on to the stack local.get $num i32.const 2 ;; check if $num is greater than or equal to '2' i32.ge_u ;; if $num is greater than or equal to the `2`, `1` will be pushed on to the stack, ;; otherwise `0` will be pushed on to the stack.
Instruction | Binary opcode |
---|---|
i32.ge_s | 0x4e |
i32.ge_u | 0x4f |
i64.ge_s | 0x59 |
i64.ge_u | 0x5a |
f32.ge | 0x60 |
f64.ge | 0x66 |