1.4.5.2

EdgeAPI/internal/utils/numberutils/utils.go

@@ -0,0 +1,60 @@
+package numberutils
+
+import (
+	"fmt"
+	"github.com/iwind/TeaGo/types"
+	"strconv"
+	"strings"
+)
+
+func FormatInt64(value int64) string {
+	return strconv.FormatInt(value, 10)
+}
+
+func FormatInt(value int) string {
+	return strconv.Itoa(value)
+}
+
+func Max[T int | int8 | int16 | int32 | int64 | uint | uint8 | uint16 | uint32 | uint64 | float32 | float64](values ...T) T {
+	if len(values) == 0 {
+		return 0
+	}
+	var max T
+	for index, value := range values {
+		if index == 0 {
+			max = value
+		} else if value > max {
+			max = value
+		}
+	}
+	return max
+}
+
+func Min[T int | int8 | int16 | int32 | int64 | uint | uint8 | uint16 | uint32 | uint64 | float32 | float64](values ...T) T {
+	if len(values) == 0 {
+		return 0
+	}
+	var min T
+	for index, value := range values {
+		if index == 0 {
+			min = value
+		} else if value < min {
+			min = value
+		}
+	}
+	return min
+}
+
+func FloorFloat64(f float64, decimal int) float64 {
+	if decimal <= 0 {
+		return f
+	}
+
+	var s = fmt.Sprintf("%f", f)
+	var index = strings.Index(s, ".")
+	if index < 0 || len(s[index:]) <= decimal+1 {
+		return f
+	}
+
+	return types.Float64(s[:index+decimal+1])
+}

EdgeAPI/internal/utils/numberutils/utils_test.go

@@ -0,0 +1,43 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved. Official site: https://goedge.cn .
+
+package numberutils_test
+
+import (
+	"github.com/TeaOSLab/EdgeAPI/internal/utils/numberutils"
+	"math"
+	"testing"
+)
+
+func TestMax(t *testing.T) {
+	t.Log(numberutils.Max[int](1, 2, 3))
+	t.Log(numberutils.Max[int32](1, 2, 3))
+	t.Log(numberutils.Max[float32](1.2, 2.3, 3.4))
+}
+
+func TestMin(t *testing.T) {
+	t.Log(numberutils.Min[int](1, 2, 3))
+	t.Log(numberutils.Min[int32](1, 2, 3))
+	t.Log(numberutils.Min[float32](1.2, 2.3, 3.4))
+}
+
+func TestMaxFloat32(t *testing.T) {
+	t.Logf("%f", math.MaxFloat32/(1<<100))
+}
+
+func TestFloorFloat64(t *testing.T) {
+	t.Logf("%f", numberutils.FloorFloat64(123.456, -1))
+	t.Logf("%f", numberutils.FloorFloat64(123.456, 0))
+	t.Logf("%f", numberutils.FloorFloat64(123, 2))
+	t.Logf("%f, %f", numberutils.FloorFloat64(123.456, 1), 123.456*10)
+	t.Logf("%f, %f", numberutils.FloorFloat64(123.456, 2), 123.456*10*10)
+	t.Logf("%f, %f", numberutils.FloorFloat64(123.456, 3), 123.456*10*10*10)
+	t.Logf("%f, %f", numberutils.FloorFloat64(123.456, 4), 123.456*10*10*10*10)
+	t.Logf("%f, %f", numberutils.FloorFloat64(123.456789, 4), 123.456789*10*10*10*10)
+	t.Logf("%f", numberutils.FloorFloat64(-123.45678, 2))
+}
+
+func TestFloorFloat64_Special(t *testing.T) {
+	for _, f := range []float64{17.88, 1.11, 1.23456} {
+		t.Logf("%f", numberutils.FloorFloat64(f, 2))
+	}
+}