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/math/signbit.go | 10 ++++++++++ 1 file changed, 10 insertions(+) create mode 100644 src/pkg/math/signbit.go (limited to 'src/pkg/math/signbit.go') diff --git a/src/pkg/math/signbit.go b/src/pkg/math/signbit.go new file mode 100644 index 000000000..670cc1a66 --- /dev/null +++ b/src/pkg/math/signbit.go @@ -0,0 +1,10 @@ +// 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 math + +// Signbit returns true if x is negative or negative zero. +func Signbit(x float64) bool { + return Float64bits(x)&(1<<63) != 0 +} -- cgit v1.2.3