22 lines
467 B
Go
22 lines
467 B
Go
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package main
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import (
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"fmt"
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"math"
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)
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func Sqrt(x float64) float64 {
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var p float64
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for z := 1.0; z != p; z -= (z * z - x) / (2 * z) {
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p = z
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}
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return p
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}
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func main() {
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fmt.Printf("Stdlib: %g, Mine: %g\n", math.Sqrt(333), Sqrt(333))
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fmt.Printf("Stdlib: %g, Mine: %g\n", math.Sqrt(33), Sqrt(33))
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fmt.Printf("Stdlib: %g, Mine: %g\n", math.Sqrt(17), Sqrt(17))
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fmt.Printf("Stdlib: %g, Mine: %g\n", math.Sqrt(4), Sqrt(4))
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}
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