Less than
The lt
instructions, short for less than, check if a number is less than another number. If the first number is less than 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 less than instructions for signed (lt_s
) and unsigned (lt_u
) numbers.
Try it
Syntax
wasm
;; load 2 numbers on to the stack
local.get $num
i32.const 2
;; check if $num is less then '2'
i32.lt_u
;; if $num is less than the `2`, `1` will be pushed on to the stack,
;; otherwise `0` will be pushed on to the stack.
Instruction | Binary opcode |
---|---|
i32.lt_s |
0x48 |
i32.lt_u |
0x49 |
i64.lt_s |
0x53 |
i64.lt_u |
0x54 |
f32.lt |
0x5d |
f64.lt |
0x63 |