src/pkg/math/signbit.go - The Go Programming Language

Golang

Source file src/pkg/math/signbit.go

     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 math
     6	
     7	// Signbit returns true if x is negative or negative zero.
     8	func Signbit(x float64) bool {
     9		return Float64bits(x)&(1<<63) != 0
    10	}