golang round float to number of digits precision

To round a float to a specific number of digits precision in Go (golang), you can use the strconv package and the Printf function from the fmt package. Here's how you can do it:

1. First, import the necessary packages:

import (
    "fmt"
    "strconv"
)

1. Next, define the float value that you want to round:

value := 3.14159

1. To round the float to a specific number of digits precision, you can use the Printf function from the fmt package. The Printf function allows you to format a string using placeholders. In this case, you can use the %.[precision]f placeholder to specify the number of digits after the decimal point. Replace [precision] with the number of digits you want to round to.

precision := 2 // Number of digits precision
rounded := fmt.Sprintf("%.[precision]f", value)

1. Finally, if you want to convert the rounded string back to a float, you can use the ParseFloat function from the strconv package:

roundedFloat, _ := strconv.ParseFloat(rounded, 64)

Now, roundedFloat will contain the rounded float value with the specified number of digits precision.

Please note that the code provided assumes that you have already imported the required packages and have defined the necessary variables.