| // 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)) |
| } |
| } |
