Subtraction
The sub instructions, short for subtraction, are used for subtracting one number from another number, similar to the - operator in other languages.
Try it
Syntax
wasm
;; load two numbers onto the stack
i32.const 10
i32.const 3
;; subtract one number from the other
i32.sub
;; the top item on the stack will now be 7 (10 - 3 = 7)
| Instruction | Binary opcode |
|---|---|
i32.sub |
0x6b |
i64.sub |
0x7d |
f32.sub |
0x93 |
f64.sub |
0xa1 |