neg: Wasm text instruction
The neg instructions, short for negate, are used to negate a number. That is, turn a positive number into a negative number and a negative number into a positive number.
Try it
(module (import "console" "log" (func $log (param f32))) (func $main f32.const 10 ;; load a number onto the stack f32.neg ;; negate the values call $log ;; log the result ) (start $main) ) const url = "{%wasm-url%}"; await WebAssembly.instantiateStreaming(fetch(url), { console }); Syntax
wat
;; load a number onto the stack f32.const 2.7 ;; negate f32.neg ;; the top item on the stack will now be -2.7 | Instruction | Binary opcode |
|---|---|
f32.neg | 0x8c |
f64.neg | 0x9a |