src

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round.go (460B)

      1 package sunrise
      2 
      3 import "math"
      4 
      5 // DefaultPlaces specifies the default precision for rounding.
      6 const DefaultPlaces = 5
      7 
      8 // Round takes the provided float and rounds it to the specified number of
      9 // decimal places. This function is adapted from user korya on GitHub
     10 // (https://gist.github.com/DavidVaini/10308388#gistcomment-1391788).
     11 func Round(f float64, places int) float64 {
     12 	shift := math.Pow(10, float64(places))
     13 	return math.Floor(f*shift+.5) / shift
     14 }