xref: /aosp_15_r20/system/chre/util/include/chre/util/nanoapp/math.h (revision 84e339476a462649f82315436d70fd732297a399)
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 #ifndef CHRE_UTIL_NANOAPP_MATH_H_
18 #define CHRE_UTIL_NANOAPP_MATH_H_
19 
20 /**
21  * @file Helper math functions and constants for nanoapps to use and share.
22  *
23  * This file is C99 compatible to ensure compatibility with the most nanoapps.
24  */
25 
26 //! The constant pi in single-precision floating point format.
27 #define CHRE_PI_F (3.14159265358979f)
28 
29 //! The constant pi in double-precision floating point format.
30 #define CHRE_PI_D (3.1415926535897932)
31 
32 #endif  // CHRE_UTIL_NANOAPP_MATH_H_
33