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// run
// Copyright 2018 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 main() {
want := int32(0x3edae8)
got := foo(1)
if want != got {
panic(fmt.Sprintf("want %x, got %x", want, got))
}
}
func foo(a int32) int32 {
return shr1(int32(shr2(int64(0x14ff6e2207db5d1f), int(a))), 4)
}
func shr1(n int32, m int) int32 { return n >> uint(m) }
func shr2(n int64, m int) int64 {
if m < 0 {
m = -m
}
if m >= 64 {
return n
}
return n >> uint(m)
}
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