[Golang] Example of float64 addition that doesn't sum up as expected. [IEEE 754]

example.go

package main

import "fmt"

// View it online: https://go.dev/play/p/GUuSXWcLUZ-
func main() {
	// IEEE 754
	a := 0.1
	b := 0.2

	fmt.Printf("%.064f\n", a+b)
	// Output:
	// 0.3000000000000000444089209850062616169452667236328125000000000000
}