优化小数数字格式化

internal/utils/numberutils/utils.go

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"github.com/iwind/TeaGo/types"
 	"strconv"
-	"strings"
 )
 
 func FormatInt64(value int64) string {
@@ -50,15 +49,5 @@ func FloorFloat32(f float32, decimal int) float32 {
 		return f
 	}
 
-	var s = fmt.Sprintf("%f", f)
-	var index = strings.Index(s, ".")
-	if index < 0 {
-		return f
-	}
-
-	var d = s[index:]
-	if len(d) <= decimal+1 {
-		return f
-	}
-	return types.Float32(s[:index] + d[:decimal+1])
+	return types.Float32(fmt.Sprintf("%.2f", f))
 }

internal/utils/numberutils/utils_test.go

@@ -35,3 +35,9 @@ func TestFloorFloat32(t *testing.T) {
 	t.Logf("%f, %f", numberutils.FloorFloat32(123.456789, 4), 123.456789*10*10*10*10)
 	t.Logf("%f", numberutils.FloorFloat32(-123.45678, 2))
 }
+
+func TestFloorFloat32_Special(t *testing.T) {
+	for _, f := range []float32{17.88, 1.11, 1.23456} {
+		t.Logf("%f", numberutils.FloorFloat32(f, 2))
+	}
+}