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
5package cmplx
6
7import "math"
8
9// Rect returns the complex number x with polar coordinates r, θ.
10func Rect(r, θ float64) complex128 {
11	s, c := math.Sincos(θ)
12	return complex(r*c, r*s)
13}
14