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43 lines
1.2 KiB
43 lines
1.2 KiB
package util
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import (
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"fmt"
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"strconv"
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)
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//四舍五入，默认保留2位小数位
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func Round(f float64) float64 {
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return RoundDecimal(f, 2)
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}
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func RoundDecimal(f float64, d int64) float64 {
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res, err := strconv.ParseFloat(fmt.Sprintf("%."+strconv.FormatInt(d, 32)+"f", f), 64)
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if err != nil {
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panic(err)
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}
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return res
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}
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//0.01412 --> 141.2 --> 141.2000 --> 141
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//1.01412 --> 10141.2 --> 10141.2000 --> 10141
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//9.99999 --> 99999.9 --> 99999.9000 --> 99999
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//0.014199999 --> 141.99999 --> 142.0000 --> 142
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//1.014199999 --> 10141.99999 --> 10142.0000 --> 10142
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//9.999999999 --> 99999.99999 --> 100000.0000 --> 100000
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//9.999999999 --> 9999999.999 --> 10000000.00 --> 10000000
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func GetIntPrice(v float64) int64 {
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//6位小数的价格，如：0.034875，四舍五入后向上取整转换为整数保存
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return int64(RoundDecimal(v*1000000, 0)) //价格存储的为4位小数的值
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}
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//1412 --> 0.1412 --> 0.1412
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//101412 --> 10.1412 --> 10.1412
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//999999 --> 99.9999 --> 99.9999
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//1419999 --> 141.9999 --> 141.9999
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//1014199999 --> 101419.9999 --> 101419.9999
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//999999999 --> 99999.9999 --> 99999.9999
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func GetFloatPrice(v int64) float64 {
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return float64(v) / 1000000.00
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}
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