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| 1 // Copyright 2010 The Go Authors. All rights reserved. | 1 // Copyright 2010 The Go Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style | 2 // Use of this source code is governed by a BSD-style |
| 3 // license that can be found in the LICENSE file. | 3 // license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 package cmath | 5 package cmath |
| 6 | 6 |
| 7 import "math" | 7 import "math" |
| 8 | 8 |
| 9 // Phase returns the phase (also called the argument) of x. | 9 // Phase returns the phase (also called the argument) of x. |
| 10 // The returned value is in the range [-Pi, Pi]. | 10 // The returned value is in the range [-Pi, Pi]. |
| 11 func Phase(x complex128) float64 { return math.Atan2(imag(x), real(x)) } | 11 func Phase(x complex128) float64 { return math.Atan2(imag(x), real(x)) } |
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