1// Copyright 2010 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package cmplx
6
7import "math"
8
9// IsInf reports whether either real(x) or imag(x) is an infinity.
10func IsInf(x complex128) bool {
11	if math.IsInf(real(x), 0) || math.IsInf(imag(x), 0) {
12		return true
13	}
14	return false
15}
16
17// Inf returns a complex infinity, complex(+Inf, +Inf).
18func Inf() complex128 {
19	inf := math.Inf(1)
20	return complex(inf, inf)
21}
22