1 files changed, 0 insertions, 135 deletions
diff --git a/src/pkg/hash/crc32/crc32.go b/src/pkg/hash/crc32/crc32.go
deleted file mode 100644
index a2a21a06f..000000000
--- a/src/pkg/hash/crc32/crc32.go
+++ /dev/null
@@ -1,135 +0,0 @@
-// Copyright 2009 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 crc32 implements the 32-bit cyclic redundancy check, or CRC-32,
-// checksum. See http://en.wikipedia.org/wiki/Cyclic_redundancy_check for
-// information.
-package crc32
-
-import (
-	"hash"
-	"sync"
-)
-
-// The size of a CRC-32 checksum in bytes.
-const Size = 4
-
-// Predefined polynomials.
-const (
-	// Far and away the most common CRC-32 polynomial.
-	// Used by ethernet (IEEE 802.3), v.42, fddi, gzip, zip, png, mpeg-2, ...
-	IEEE = 0xedb88320
-
-	// Castagnoli's polynomial, used in iSCSI.
-	// Has better error detection characteristics than IEEE.
-	// http://dx.doi.org/10.1109/26.231911
-	Castagnoli = 0x82f63b78
-
-	// Koopman's polynomial.
-	// Also has better error detection characteristics than IEEE.
-	// http://dx.doi.org/10.1109/DSN.2002.1028931
-	Koopman = 0xeb31d82e
-)
-
-// Table is a 256-word table representing the polynomial for efficient processing.
-type Table [256]uint32
-
-// castagnoliTable points to a lazily initialized Table for the Castagnoli
-// polynomial. MakeTable will always return this value when asked to make a
-// Castagnoli table so we can compare against it to find when the caller is
-// using this polynomial.
-var castagnoliTable *Table
-var castagnoliOnce sync.Once
-
-func castagnoliInit() {
-	castagnoliTable = makeTable(Castagnoli)
-}
-
-// IEEETable is the table for the IEEE polynomial.
-var IEEETable = makeTable(IEEE)
-
-// MakeTable returns the Table constructed from the specified polynomial.
-func MakeTable(poly uint32) *Table {
-	switch poly {
-	case IEEE:
-		return IEEETable
-	case Castagnoli:
-		castagnoliOnce.Do(castagnoliInit)
-		return castagnoliTable
-	}
-	return makeTable(poly)
-}
-
-// makeTable returns the Table constructed from the specified polynomial.
-func makeTable(poly uint32) *Table {
-	t := new(Table)
-	for i := 0; i < 256; i++ {
-		crc := uint32(i)
-		for j := 0; j < 8; j++ {
-			if crc&1 == 1 {
-				crc = (crc >> 1) ^ poly
-			} else {
-				crc >>= 1
-			}
-		}
-		t[i] = crc
-	}
-	return t
-}
-
-// digest represents the partial evaluation of a checksum.
-type digest struct {
-	crc uint32
-	tab *Table
-}
-
-// New creates a new hash.Hash32 computing the CRC-32 checksum
-// using the polynomial represented by the Table.
-func New(tab *Table) hash.Hash32 { return &digest{0, tab} }
-
-// NewIEEE creates a new hash.Hash32 computing the CRC-32 checksum
-// using the IEEE polynomial.
-func NewIEEE() hash.Hash32 { return New(IEEETable) }
-
-func (d *digest) Size() int { return Size }
-
-func (d *digest) BlockSize() int { return 1 }
-
-func (d *digest) Reset() { d.crc = 0 }
-
-func update(crc uint32, tab *Table, p []byte) uint32 {
-	crc = ^crc
-	for _, v := range p {
-		crc = tab[byte(crc)^v] ^ (crc >> 8)
-	}
-	return ^crc
-}
-
-// Update returns the result of adding the bytes in p to the crc.
-func Update(crc uint32, tab *Table, p []byte) uint32 {
-	if tab == castagnoliTable {
-		return updateCastagnoli(crc, p)
-	}
-	return update(crc, tab, p)
-}
-
-func (d *digest) Write(p []byte) (n int, err error) {
-	d.crc = Update(d.crc, d.tab, p)
-	return len(p), nil
-}
-
-func (d *digest) Sum32() uint32 { return d.crc }
-
-func (d *digest) Sum(in []byte) []byte {
-	s := d.Sum32()
-	return append(in, byte(s>>24), byte(s>>16), byte(s>>8), byte(s))
-}
-
-// Checksum returns the CRC-32 checksum of data
-// using the polynomial represented by the Table.
-func Checksum(data []byte, tab *Table) uint32 { return Update(0, tab, data) }
-
-// ChecksumIEEE returns the CRC-32 checksum of data
-// using the IEEE polynomial.
-func ChecksumIEEE(data []byte) uint32 { return update(0, IEEETable, data) }