kubernetes utils 源码
kubernetes utils 代码
文件路径：/pkg/registry/core/service/allocator/utils.go
/*
Copyright 2015 The Kubernetes 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 allocator
import (
"math/big"
"math/bits"
)
// countBits returns the number of set bits in n
func countBits(n *big.Int) int {
var count int = 0
for _, w := range n.Bits() {
count += bits.OnesCount64(uint64(w))
}
return count
}
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