http://golang.org/pkg/strconv/
http://play.golang.org/p/4VNRgW8WoB
How do I convert a float number into string format? This is google playground but not getting the expected output. (2e+07) I want to get "21312421.213123"
package main
import "fmt"
import "strconv"
func floattostr(input_num float64) string {
// to convert a float number to a string
return strconv.FormatFloat(input_num, 'g', 1, 64)
}
func main() {
fmt.Println(floattostr(21312421.213123))
// what I expect is "21312421.213123" in string format
}
Please help me get the string out of float number. Thanks
This question is related to
go
package main
import "fmt"
import "strconv"
func FloatToString(input_num float64) string {
// to convert a float number to a string
return strconv.FormatFloat(input_num, 'f', 6, 64)
}
func main() {
fmt.Println(FloatToString(21312421.213123))
}
If you just want as many digits precision as possible, then the special precision -1 uses the smallest number of digits necessary such that ParseFloat will return f exactly. Eg
strconv.FormatFloat(input_num, 'f', -1, 64)
Personally I find fmt easier to use. (Playground link)
fmt.Printf("x = %.6f\n", 21312421.213123)
Or if you just want to convert the string
fmt.Sprintf("%.6f", 21312421.213123)
Source: Stackoverflow.com