59 lines
858 B
Go
59 lines
858 B
Go
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package mathutil
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//EPSILON very small number
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var EPSILON float32 = 0.00000001
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//FloatEquals float equals
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func FloatEquals(a, b float32) bool {
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if (a-b) < EPSILON && (b-a) < EPSILON {
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return true
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}
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return false
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}
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//EPSILON64 very small number
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var EPSILON64 = 0.00000001
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//Float64Equals float equal
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func Float64Equals(a, b float64) bool {
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if (a-b) < EPSILON64 && (b-a) < EPSILON64 {
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return true
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}
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return false
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}
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//Min min
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func Min(a, b int) int {
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if a < b {
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return a
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}
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if b < a {
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return b
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}
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return a
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}
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//Max max
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func Max(a, b int) int {
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if a > b {
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return a
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}
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if b > a {
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return b
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}
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return a
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}
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// IntersectInt64 intersect map
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func IntersectInt64(as, bs []int64) []int64 {
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i := make([]int64, 0, Max(len(as), len(bs)))
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for _, a := range as {
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for _, b := range bs {
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if a == b {
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i = append(i, a)
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}
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}
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}
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return i
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}
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