From 5ff4c17907d5b19510a62e08fd8d3b11e62b431d Mon Sep 17 00:00:00 2001 From: Ondřej Surý Date: Tue, 13 Sep 2011 13:13:40 +0200 Subject: Imported Upstream version 60 --- src/pkg/cmath/isinf.go | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 src/pkg/cmath/isinf.go (limited to 'src/pkg/cmath/isinf.go') diff --git a/src/pkg/cmath/isinf.go b/src/pkg/cmath/isinf.go new file mode 100644 index 000000000..f23d2dea7 --- /dev/null +++ b/src/pkg/cmath/isinf.go @@ -0,0 +1,21 @@ +// 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 cmath + +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) +} -- cgit v1.2.3