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// Copyright 2010 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 cmplx

import "math"

// IsInf returns true if either real(x) or imag(x) is an infinity.

func IsInf(x complex128) bool {

        if math.IsInf(real(x), 0) || math.IsInf(imag(x), 0) {

                return true

        }

        return false

}

// Inf returns a complex infinity, complex(+Inf, +Inf).

func Inf() complex128 {

        inf := math.Inf(1)

        return complex(inf, inf)

}