| // $G $D/$F.go && $L $F.$A && ./$A.out || echo BUG: should not panic | |
| // Copyright 2009 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. | |
| package main | |
| import "fmt" | |
| func f0() string { | |
| const f = 3.141592; | |
| return fmt.Sprintf("%v", float64(f)); | |
| } | |
| func f1() string { | |
| const f = 3.141592; | |
| x := float64(float32(f)); // appears to change the precision of f | |
| _ = x; | |
| return fmt.Sprintf("%v", float64(f)); | |
| } | |
| func main() { | |
| r0 := f0(); | |
| r1 := f1(); | |
| if r0 != r1 { | |
| println("r0 =", r0); | |
| println("r1 =", r1); | |
| panic("r0 and r1 should be the same"); | |
| } | |
| } |