mirror of
https://github.com/golang/go
synced 2024-10-05 00:21:21 -06:00
1d4e2d1adc
Also update range of Phase and Polar due to signed zero. [Phase(cmplx(-1, +0)) = pi and Phase(cmplx(-1, -0)) = -pi] R=rsc, r CC=golang-dev https://golang.org/cl/1235041
12 lines
372 B
Go
12 lines
372 B
Go
// 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"
|
|
|
|
// Phase returns the phase (also called the argument) of x.
|
|
// The returned value is in the range [-Pi, Pi].
|
|
func Phase(x complex128) float64 { return math.Atan2(imag(x), real(x)) }
|