1 /**
2  * Copyright (C) 2022 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5  * in compliance with the License. You may obtain a copy of the License at
6  *
7  * ```
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  * ```
10  *
11  * Unless required by applicable law or agreed to in writing, software distributed under the License
12  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
13  * or implied. See the License for the specific language governing permissions and limitations under
14  * the License.
15  */
16 package com.android.healthconnect.controller.dataentries.units
17 
18 /** Energy unit and conversion utilities. */
19 object EnergyConverter {
20     private const val CAL_PER_KJ = 0.239
21     private const val J_PER_CAL = 4.184
22 
23     /** Converts from the joules to calories */
convertToCaloriesnull24     fun convertToCalories(joules: Double): Double {
25         return (joules / 1000.0) * CAL_PER_KJ
26     }
27 
28     /** Converts from the calories to joules */
convertToJoulesnull29     fun convertToJoules(calories: Double): Double {
30         return calories * J_PER_CAL
31     }
32 }
33