The sub instructions, short for subtraction, are used for subtracting one number from another number, similar to the - operator in other languages.

Try it


;; load two numbers onto the stack
i32.const 10
i32.const 3

;; subtract one number from the other

;; 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