blob: 30951a702ce7b935e39b7686cffa27e3c01535d8 [file] [log] [blame]
// run
// Check conversion of constant to float32/float64 near min/max boundaries.
// Copyright 2014 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 (
var cvt = []struct {
val interface{}
binary string
{float32(-340282356779733661637539395458142568447), "-16777215p+104"},
{float32(-340282326356119256160033759537265639424), "-16777214p+104"},
{float32(340282326356119256160033759537265639424), "16777214p+104"},
{float32(340282356779733661637539395458142568447), "16777215p+104"},
{float64(-1.797693134862315807937289714053e+308), "-9007199254740991p+971"},
{float64(-1.797693134862315708145274237317e+308), "-9007199254740991p+971"},
{float64(-1.797693134862315608353258760581e+308), "-9007199254740990p+971"},
{float64(1.797693134862315608353258760581e+308), "9007199254740990p+971"},
{float64(1.797693134862315708145274237317e+308), "9007199254740991p+971"},
{float64(1.797693134862315807937289714053e+308), "9007199254740991p+971"},
func main() {
bug := false
for i, c := range cvt {
s := fmt.Sprintf("%b", c.val)
if s != c.binary {
if !bug {
bug = true
fmt.Printf("#%d: have %s, want %s\n", i, s, c.binary)