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 5 package cmplx 6 7 import "math" 8 9 // IsInf returns true if either real(x) or imag(x) is an infinity. 10 func 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). 18 func Inf() complex128 { 19 inf := math.Inf(1) 20 return complex(inf, inf) 21 } 22
