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// 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.
// Test that typed and untyped negative zero floating point constants
// are treated as equivalent to zero constants.
package main
import "math"
const zero = 0.0
func main() {
x := -zero
b := math.Float64bits(x)
if b != 0 {
panic(b)
}
x = -float64(zero)
b = math.Float64bits(x)
if b != 0 {
panic(b)
}
v := x
b = math.Float64bits(-v)
if b != 0x8000000000000000 {
panic(b)
}
}
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