// Copyright 2015 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 scale

// clamp clamps x to the range [0, 1].
func clamp(x float64) float64 {
	if x < 0 {
		return 0
	}
	if x > 1 {
		return 1
	}
	return x
}