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// 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 cmplx

import "math"

// Rect returns the complex number x with polar coordinates r, θ.

func Rect(r, θ float64) complex128 {

        s, c := math.Sincos(θ)

        return complex(r*c, r*s)

}