diff options
Diffstat (limited to 'src/lib/hash/crc32.go')
| -rw-r--r-- | src/lib/hash/crc32.go | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/src/lib/hash/crc32.go b/src/lib/hash/crc32.go index f3b60dc89..4ab8495b5 100644 --- a/src/lib/hash/crc32.go +++ b/src/lib/hash/crc32.go @@ -25,10 +25,11 @@ export const ( Koopman = 0xeb31d82e; ) -export type Table [256]uint32 +// TODO(rsc): Change to [256]uint32 +export type Table []uint32 -export func MakeTable(poly uint32) *Table { - t := new(Table); +export func MakeTable(poly uint32) Table { + t := new(Table, 256); for i := 0; i < 256; i++ { crc := uint32(i); for j := 0; j < 8; j++ { @@ -47,10 +48,10 @@ export var ieee = MakeTable(IEEE); export type Digest struct { crc uint32; - tab *Table; + tab Table; } -export func NewDigest(tab *Table) *Digest { +export func NewDigest(tab Table) *Digest { return &Digest{0, tab}; } @@ -58,7 +59,7 @@ export func NewIEEEDigest() *Digest { return NewDigest(ieee); } -func (d *Digest) Write(p *[]byte) (n int, err *os.Error) { +func (d *Digest) Write(p []byte) (n int, err *os.Error) { crc := d.crc ^ 0xFFFFFFFF; tab := d.tab; for i := 0; i < len(p); i++ { @@ -72,7 +73,7 @@ func (d *Digest) Sum32() uint32 { return d.crc } -func (d *Digest) Sum() *[]byte { +func (d *Digest) Sum() []byte { p := new([]byte, 4); s := d.Sum32(); p[0] = byte(s>>24); |