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path: root/libgo/go/hash/crc32/crc32_generic.go
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// Copyright 2011 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.

// +build !amd64,!amd64p32,!s390x

package crc32

// This file contains the generic version of updateCastagnoli which does
// slicing-by-8, or uses the fallback for very small sizes.

func updateCastagnoli(crc uint32, p []byte) uint32 {
	// Use slicing-by-8 on larger inputs.
	if len(p) >= sliceBy8Cutoff {
		return updateSlicingBy8(crc, castagnoliTable8, p)
	}
	return update(crc, castagnoliTable, p)
}

func updateIEEE(crc uint32, p []byte) uint32 {
	// Use slicing-by-8 on larger inputs.
	if len(p) >= sliceBy8Cutoff {
		ieeeTable8Once.Do(func() {
			ieeeTable8 = makeTable8(IEEE)
		})
		return updateSlicingBy8(crc, ieeeTable8, p)
	}
	return update(crc, IEEETable, p)
}