golang的interface转float

	money := 100
	rateStr := 7.25
	row := make(map[string]interface{})
	row["smoney"] = (float32(detail.Money) * 0.98) / 100.00
	
	fmt.Println(row["smoney"], reflect.TypeOf(row["smoney"]))
	smoney1, _ := row["smoney"].(float32)
	rate, _ := strconv.ParseFloat(rateStr, 32)
	row["count"] = smoney1 / float32(rate)
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var sjsjs interface{}

sjsjs=10

sjsjs1,ok:=sjsjs.(float64)

println("sjsjsjsjs",sjsjs1,ok)
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输出：

0.0000 false

注意这种转换是失败的。（从int类型的interface类型转换为float64是失败的，必须从int转化为int,如果是float64则转换为float64）

float32转float64

var a1 float32 = 23.4
a2 := float64(a1)
fmt.Printf("a1的类型是%T,a2的类型是%T", a1, a2)
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输出:
a1的类型是float32,a2的类型是float64