math.h

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/*
 * Copyright (c) 2019 Linaro Limited.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_LIB_LIBC_MINIMAL_INCLUDE_MATH_H_
#define ZEPHYR_LIB_LIBC_MINIMAL_INCLUDE_MATH_H_
 
#ifdef __cplusplus
extern "C" {
#endif
 
#if !defined(FLT_EVAL_METHOD) && defined(__FLT_EVAL_METHOD__)
#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
#endif
 
#if defined FLT_EVAL_METHOD
        #if FLT_EVAL_METHOD == 0
                typedef float  float_t;
                typedef double double_t;
        #elif FLT_EVAL_METHOD == 1
                typedef double float_t;
                typedef double double_t;
        #elif FLT_EVAL_METHOD == 2
                typedef long double float_t;
                typedef long double double_t;
        #else
                /* Implementation-defined.  Assume float_t and double_t have
                 * already been defined */
        #endif
#else
        typedef float  float_t;
        typedef double double_t;
#endif
 
/* Useful constants.  */
#define MAXFLOAT    3.40282347e+38F
 
#define M_E         2.7182818284590452354
#define M_LOG2E     1.4426950408889634074
#define M_LOG10E    0.43429448190325182765
#define M_LN2       0.693147180559945309417
#define M_LN10      2.30258509299404568402
#define M_PI        3.14159265358979323846
#define M_PI_2      1.57079632679489661923
#define M_PI_4      0.78539816339744830962
#define M_1_PI      0.31830988618379067154
#define M_2_PI      0.63661977236758134308
#define M_2_SQRTPI  1.12837916709551257390
#define M_SQRT2     1.41421356237309504880
#define M_SQRT1_2   0.70710678118654752440
 
float sqrtf(float square);
double sqrt(double square);
 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_LIB_LIBC_MINIMAL_INCLUDE_MATH_H_ */