| // run | |
| // Copyright 2012 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. | |
| // Converting constants between types must introduce rounding. | |
| package main | |
| import "fmt" | |
| const ( | |
| F32 = 0.00999999977648258209228515625 | |
| F64 = 0.01000000000000000020816681711721685132943093776702880859375 | |
| ) | |
| var F = float64(float32(0.01)) | |
| func main() { | |
| // 0.01 rounded to float32 then to float64 is F32. | |
| // 0.01 represented directly in float64 is F64. | |
| if F != F32 { | |
| panic(fmt.Sprintf("F=%.1000g, want %.1000g", F, F32)) | |
| } | |
| } |