Zephyr API Documentation  3.7.0-rc1
A Scalable Open Source RTOS
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math.h
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1/*
2 * Copyright (c) 2019 Linaro Limited.
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7#ifndef ZEPHYR_LIB_LIBC_MINIMAL_INCLUDE_MATH_H_
8#define ZEPHYR_LIB_LIBC_MINIMAL_INCLUDE_MATH_H_
9
10#ifdef __cplusplus
11extern "C" {
12#endif
13
14#if !defined(FLT_EVAL_METHOD) && defined(__FLT_EVAL_METHOD__)
15#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
16#endif
17
18#if defined FLT_EVAL_METHOD
19 #if FLT_EVAL_METHOD == 0
20 typedef float float_t;
21 typedef double double_t;
22 #elif FLT_EVAL_METHOD == 1
23 typedef double float_t;
24 typedef double double_t;
25 #elif FLT_EVAL_METHOD == 2
26 typedef long double float_t;
27 typedef long double double_t;
28 #else
29 /* Implementation-defined. Assume float_t and double_t have
30 * already been defined */
31 #endif
32#else
33 typedef float float_t;
34 typedef double double_t;
35#endif
36
37/* Useful constants. */
38#define MAXFLOAT 3.40282347e+38F
39
40#define M_E 2.7182818284590452354
41#define M_LOG2E 1.4426950408889634074
42#define M_LOG10E 0.43429448190325182765
43#define M_LN2 0.693147180559945309417
44#define M_LN10 2.30258509299404568402
45#define M_PI 3.14159265358979323846
46#define M_PI_2 1.57079632679489661923
47#define M_PI_4 0.78539816339744830962
48#define M_1_PI 0.31830988618379067154
49#define M_2_PI 0.63661977236758134308
50#define M_2_SQRTPI 1.12837916709551257390
51#define M_SQRT2 1.41421356237309504880
52#define M_SQRT1_2 0.70710678118654752440
53
54float sqrtf(float square);
55double sqrt(double square);
56
57#ifdef __cplusplus
58}
59#endif
60
61#endif /* ZEPHYR_LIB_LIBC_MINIMAL_INCLUDE_MATH_H_ */
float float_t
Definition: math.h:33
float sqrtf(float square)
double double_t
Definition: math.h:34
double sqrt(double square)