bbgo_origin/bbgo/fixedpoint/convert.go
2020-10-02 20:50:05 +08:00

46 lines
773 B
Go

package fixedpoint
import (
"math"
"strconv"
)
const DefaultPrecision = 8
const DefaultPow = 1e8
type Value int64
func (v Value) Float64() float64 {
return float64(v) / DefaultPow
}
func (v Value) Mul(v2 Value) Value {
return NewFromFloat(v.Float64() * v2.Float64())
}
func (v Value) Div(v2 Value) Value {
return NewFromFloat(v.Float64() / v2.Float64())
}
func (v Value) Sub(v2 Value) Value {
return Value(int64(v) - int64(v2))
}
func (v Value) Add(v2 Value) Value {
return Value(int64(v) + int64(v2))
}
func NewFromString(input string) (Value, error) {
v, err := strconv.ParseFloat(input, 64)
if err != nil {
return 0, err
}
return NewFromFloat(v), nil
}
func NewFromFloat(val float64) Value {
return Value(int64(math.Round(val * DefaultPow)))
}