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 11 extern "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 54 float sqrtf(float square); 55 double sqrt(double square); 56 57 #ifdef __cplusplus 58 } 59 #endif 60 61 #endif /* ZEPHYR_LIB_LIBC_MINIMAL_INCLUDE_MATH_H_ */ 62
