| // run | |
| // Copyright 2018 The Go Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style | |
| // license that can be found in the LICENSE file. | |
| // Issues 12576 and 12621: Negative untyped floating point constants | |
| // with small magnitude round to 0, not negative zero. | |
| package main | |
| import "math" | |
| var m = -1e-10000 | |
| func main() { | |
| if math.Signbit(m) { | |
| panic(m) | |
| } | |
| } |