1 /*
2  * Copyright (C) 2018 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.nn.benchmark.core;
18 
19 /**
20  * Mean and standard deviation pair, used for (de)normalization.
21  */
22 public class MeanStdDev {
23     public static final int ELEMENT_SIZE_BYTES = 4;
24     public static final int DATA_SIZE_BYTES = 2 * ELEMENT_SIZE_BYTES;
25 
26     public float mean;
27     public float stdDev;
28 
MeanStdDev(float mean, float stdDev)29     public MeanStdDev(float mean, float stdDev) {
30         this.mean = mean;
31         this.stdDev = stdDev;
32     }
33 
denormalize(float value)34     public float denormalize(float value) {
35         return value * stdDev + mean;
36     }
37 }
38