/* * Copyright (c) 2006-2018, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes */ #ifndef __MATH_H__ #define __MATH_H__ #define M_PI 3.141592653589793238462643 double sin(double x); double cos(double x); typedef float float_t; typedef double double_t; #endif