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util/DateUtil.go

 package util
 
 import (
+	"math"
 	"time"
 )
 
@@ -65,6 +66,15 @@ func TimeSubDays(t1, t2 time.Time) int {
 	}
 }
 
+// TimeSubMinute t1比t2多多少分钟
+func TimeSubMinute(t1, t2 *time.Time) int {
+	if t1.Location().String() != t2.Location().String() {
+		return -1
+	}
+	seconds := t1.Sub(*t2).Seconds()
+	return int(math.Ceil(seconds / 60)) //向上取整
+}
+
 func MilSecond(time time.Time) int64 {
 	return time.UnixNano() / 1e6
 }

util/NumberUtil.go

+package util
+
+import (
+	"fmt"
+	"math/big"
+	"strconv"
+)
+
+type numberUtilStruct struct {
+}
+
+var NumberUtil = &numberUtilStruct{}
+
+func (s *numberUtilStruct) Float64Format(p float64, digit int) float64 {
+	format := "%." + strconv.Itoa(digit) + "f"
+	value, _ := strconv.ParseFloat(fmt.Sprintf(format, p), 64)
+	return value
+}
+
+type bigDecimalStruct struct {
+}
+
+var BigDecimal = &bigDecimalStruct{}
+
+// Add 精度加法 a+b
+func (s *bigDecimalStruct) Add(a *float64, b *float64) *float64 {
+	r, _ := new(big.Float).Add(new(big.Float).SetFloat64(*a), new(big.Float).SetFloat64(*b)).Float64()
+	return &r
+}
+
+// Sub 精度减法 a-b
+func (s *bigDecimalStruct) Sub(a *float64, b *float64) *float64 {
+	r, _ := new(big.Float).Sub(new(big.Float).SetFloat64(*a), new(big.Float).SetFloat64(*b)).Float64()
+	return &r
+}
+
+// Mul 精度乘法 axb
+func (s *bigDecimalStruct) Mul(a *float64, b *float64) *float64 {
+	r, _ := new(big.Float).Mul(new(big.Float).SetFloat64(*a), new(big.Float).SetFloat64(*b)).Float64()
+	return &r
+}
+
+// Quo 精度除法 a/b
+func (s *bigDecimalStruct) Quo(a *float64, b *float64) *float64 {
+	r, _ := new(big.Float).Quo(new(big.Float).SetFloat64(*a), new(big.Float).SetFloat64(*b)).Float64()
+	return &r
+}