mirror of
https://github.com/golang/go
synced 2024-11-20 10:24:40 -07:00
33 lines
639 B
Go
33 lines
639 B
Go
|
// $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;
|
||
|
|
_ := float64(float32(f)); // appears to change the precision of f
|
||
|
|
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");
|
||
|
|
}
|
||
|
|
}
|