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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libgo/go/hash/hash.go
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Diffstat (limited to 'libgo/go/hash/hash.go')
-rw-r--r--libgo/go/hash/hash.go36
1 files changed, 36 insertions, 0 deletions
diff --git a/libgo/go/hash/hash.go b/libgo/go/hash/hash.go
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+// 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 hash
+
+import "io"
+
+// Hash is the common interface implemented by all hash functions.
+type Hash interface {
+ // Write adds more data to the running hash.
+ // It never returns an error.
+ io.Writer
+
+ // Sum returns the current hash, without changing the
+ // underlying hash state.
+ Sum() []byte
+
+ // Reset resets the hash to one with zero bytes written.
+ Reset()
+
+ // Size returns the number of bytes Sum will return.
+ Size() int
+}
+
+// Hash32 is the common interface implemented by all 32-bit hash functions.
+type Hash32 interface {
+ Hash
+ Sum32() uint32
+}
+
+// Hash64 is the common interface implemented by all 64-bit hash functions.
+type Hash64 interface {
+ Hash
+ Sum64() uint64
+}