1 // Copyright 2021 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 5 package p 6 7 type Integer interface { 8 ~int | ~int8 | ~int16 | ~int32 | ~int64 | 9 ~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr 10 } 11 12 func shl[I Integer](n int) I { 13 return 1 << n 14 } 15