kubernetes simple 源码
kubernetes simple 代码
文件路径：/third_party/forked/gonum/graph/simple/simple.go
// Copyright ©2014 The gonum 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 simple provides a suite of simple graph implementations satisfying
// the gonum/graph interfaces.
package simple
import (
"math"
"k8s.io/kubernetes/third_party/forked/gonum/graph"
)
// Node is a simple graph node.
type Node int
// ID returns the ID number of the node.
func (n Node) ID() int {
return int(n)
}
// Edge is a simple graph edge.
type Edge struct {
F, T graph.Node
W float64
}
// From returns the from-node of the edge.
func (e Edge) From() graph.Node { return e.F }
// To returns the to-node of the edge.
func (e Edge) To() graph.Node { return e.T }
// Weight returns the weight of the edge.
func (e Edge) Weight() float64 { return e.W }
// maxInt is the maximum value of the machine-dependent int type.
const maxInt int = int(^uint(0) >> 1)
// isSame returns whether two float64 values are the same where NaN values
// are equalable.
func isSame(a, b float64) bool {
return a == b || (math.IsNaN(a) && math.IsNaN(b))
}
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