1 /*
2  * Copyright (C) 2021 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.server.wm.traces.common
18 
19 import kotlin.math.min
20 
21 /**
22  * A formatter to print floats with 3 decimal digits.
23  *
24  * This is necessary because multiplatform kotlin projects don't support String.format
25  * yet (issue KT-21644)
26  */
27 object FloatFormatter {
formatnull28     fun format(value: Float): String {
29         val strValue = value.toString()
30         val dotIndex = strValue.indexOf(".")
31         return if (dotIndex > -1) {
32             strValue.substring(0, min(strValue.length, dotIndex + 4))
33         } else {
34             "$strValue.000"
35         }
36     }
37 }