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// run
// Copyright 2021 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 main
import "fmt"
func f(x uint64) uint64 {
s := "\x04"
c := s[0]
return x - x<<c<<4
}
func g(x uint32) uint32 {
s := "\x04"
c := s[0]
return x - x<<c<<4
}
func main() {
if want, got := uint64(0xffffffffffffff01), f(1); want != got {
panic(fmt.Sprintf("want %x got %x", want, got))
}
if want, got := uint32(0xffffff01), g(1); want != got {
panic(fmt.Sprintf("want %x got %x", want, got))
}
}
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