diff options
Diffstat (limited to 'libgo/go/hash/adler32/adler32.go')
| -rw-r--r-- | libgo/go/hash/adler32/adler32.go | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/libgo/go/hash/adler32/adler32.go b/libgo/go/hash/adler32/adler32.go index 0c733f751a..21d6a2e1dc 100644 --- a/libgo/go/hash/adler32/adler32.go +++ b/libgo/go/hash/adler32/adler32.go @@ -42,7 +42,7 @@ func New() hash.Hash32 { func (d *digest) Size() int { return Size } -func (d *digest) BlockSize() int { return 1 } +func (d *digest) BlockSize() int { return 4 } // Add p to the running checksum d. func update(d digest, p []byte) digest { @@ -52,6 +52,17 @@ func update(d digest, p []byte) digest { if len(p) > nmax { p, q = p[:nmax], p[nmax:] } + for len(p) >= 4 { + s1 += uint32(p[0]) + s2 += s1 + s1 += uint32(p[1]) + s2 += s1 + s1 += uint32(p[2]) + s2 += s1 + s1 += uint32(p[3]) + s2 += s1 + p = p[4:] + } for _, x := range p { s1 += uint32(x) s2 += s1 |