string float64 int utils

strconv.go

 package utils
 
-import "strconv"
+import (
+	"fmt"
+	"strconv"
+)
 
+// int to string
 func IntToString(a int) string {
 	return strconv.Itoa(a)
 }
 
-func Float64ToString(a float64) string {
-	return strconv.FormatFloat(a, 'E', -1, 64)
+// float64 to string
+func Float64ToString(a float64, point int) string {
+	a = FloatRound(a, point)
+	return strconv.FormatFloat(a, 'f', -1, 64)
 }
 
+// string to int
 func StringToInt(s string) int {
 	i, _ := strconv.Atoi(s)
 	return i
 }
 
+// string to float64
 func StringToFloat64(s string) float64 {
 	f, _ := strconv.ParseFloat(s, 64)
 	return f
 }
+
+// float round point
+func FloatRound(f float64, n int) float64 {
+	format := "%." + strconv.Itoa(n) + "f"
+	res, _ := strconv.ParseFloat(fmt.Sprintf(format, f), 64)
+	return res
+}