12 lines
372 B
Go
12 lines
372 B
Go
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package cmplx
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import "math"
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// Phase returns the phase (also called the argument) of x.
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// The returned value is in the range [-Pi, Pi].
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func Phase(x complex128) float64 { return math.Atan2(imag(x), real(x)) }
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