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package godecimal
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import (
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"database/sql/driver"
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"fmt"
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"strings"
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)
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type DFloat struct {
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FValue float64
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Point int
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}
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// Value 实现 driver.Valuer 接口，Value 返回 json value
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func (f DFloat) Value() (driver.Value, error) {
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return NewFloat(f.FValue).Float64PointAdaptive(f.Point), nil
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}
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// Scan 方法实现了 sql.Scanner 接口
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func (f *DFloat) Scan(value interface{}) error {
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f1, _ := value.(float64)
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*f = DFloat{
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FValue: f1,
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Point: pointLength(f1),
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}
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return nil
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}
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func pointLength(a any) int {
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tmp := strings.Split(fmt.Sprint(a), ".")
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if len(tmp) <= 1 {
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return 0
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}
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return len(tmp[1])
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}
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