Created
November 2, 2017 16:06
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| package main | |
| import ( | |
| "fmt" | |
| "math" | |
| ) | |
| func Sqrt(x float64) float64 { | |
| z := 1.0 | |
| var old float64 | |
| for { | |
| old = z | |
| z -= (z*z - x) / (2*z) | |
| if math.Abs(old - z) < 0.00000001 { | |
| break | |
| } | |
| } | |
| return z | |
| } | |
| func main() { | |
| fmt.Println(Sqrt(2)) | |
| fmt.Println(math.Sqrt(2)) | |
| } |
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