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https://github.com/golang/go
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26 lines
678 B
Go
26 lines
678 B
Go
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package intsets
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import "testing"
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func TestNLZ(t *testing.T) {
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// Test the platform-specific edge case.
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// NB: v must be a var (not const) so that the word() conversion is dynamic.
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// Otherwise the compiler will report an error.
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v := uint64(0x0000801000000000)
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n := nlz(word(v))
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want := 32 // (on 32-bit)
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if bitsPerWord == 64 {
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want = 16
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}
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if n != want {
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t.Errorf("%d-bit nlz(%d) = %d, want %d", bitsPerWord, v, n, want)
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}
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}
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// Backdoor for testing.
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func (s *Sparse) Check() error { return s.check() }
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