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authorOpenShift Merge Robot <openshift-merge-robot@users.noreply.github.com>2019-06-25 21:40:38 +0200
committerGitHub <noreply@github.com>2019-06-25 21:40:38 +0200
commit5b7086abda91f4301af3bfb642d416a22349c276 (patch)
treebf139f29b261e55c161394637f1c7073da5103f0 /vendor/github.com/prometheus/common/model/fnv.go
parenta488e197a6e3947dd420b40ed834b50db9c829c3 (diff)
parent2388222e98462fdbbe44f3e091b2b79d80956a9a (diff)
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Merge pull request #3418 from vrothberg/go-modules
update dependencies
Diffstat (limited to 'vendor/github.com/prometheus/common/model/fnv.go')
-rw-r--r--vendor/github.com/prometheus/common/model/fnv.go42
1 files changed, 42 insertions, 0 deletions
diff --git a/vendor/github.com/prometheus/common/model/fnv.go b/vendor/github.com/prometheus/common/model/fnv.go
new file mode 100644
index 000000000..038fc1c90
--- /dev/null
+++ b/vendor/github.com/prometheus/common/model/fnv.go
@@ -0,0 +1,42 @@
+// Copyright 2015 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package model
+
+// Inline and byte-free variant of hash/fnv's fnv64a.
+
+const (
+ offset64 = 14695981039346656037
+ prime64 = 1099511628211
+)
+
+// hashNew initializies a new fnv64a hash value.
+func hashNew() uint64 {
+ return offset64
+}
+
+// hashAdd adds a string to a fnv64a hash value, returning the updated hash.
+func hashAdd(h uint64, s string) uint64 {
+ for i := 0; i < len(s); i++ {
+ h ^= uint64(s[i])
+ h *= prime64
+ }
+ return h
+}
+
+// hashAddByte adds a byte to a fnv64a hash value, returning the updated hash.
+func hashAddByte(h uint64, b byte) uint64 {
+ h ^= uint64(b)
+ h *= prime64
+ return h
+}