-
Notifications
You must be signed in to change notification settings - Fork 0
/
shopspring.go
55 lines (40 loc) · 1.19 KB
/
shopspring.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
package main
import (
"fmt"
"github.com/shopspring/decimal"
)
func main() {
// DivisionPrecision is the number of decimal places in the result when it doesn't divide exactly.
// decimal.DivisionPrecision = 16 // default 16
floatCalc(165.000000000000000000000000, 1.400000000000000000000000)
floatCalc(165.000000000000000000000000, 1.400000000000000000000000)
f := 0.020000000000000018000000
printFloat(f)
decimalMultCalc(165.0, 1.4)
decimalDivCalc(2, 3)
decimalDivCalc(2, 30000)
decimalDivCalc(20000, 3)
printDecimalFromFloat(f)
}
func floatCalc(x, y float64) {
result := x * y
fmt.Printf("%.24f * %.24f = %.24f\n", x, y, result)
}
func decimalMultCalc(x, y float64) {
result := decimal.NewFromFloat(x).Mul(decimal.NewFromFloat(y))
fmt.Printf("%.16f * %.16f = %s\n", x, y, result.String())
}
func decimalDivCalc(x, y float64) {
result := decimal.NewFromFloat(x).Div(decimal.NewFromFloat(y))
fmt.Printf("%.16f / %.16f = %s\n", x, y, result.String())
}
func printFloat(f float64) {
fmt.Printf("%.24f\n", f)
}
func printDecimal(d decimal.Decimal) {
fmt.Printf("%s\n", d.String())
}
func printDecimalFromFloat(f float64) {
d := decimal.NewFromFloat(f)
fmt.Printf("%s\n", d.String())
}