模拟二维BZ反应扩散模型，方法是用显式EULER法求解模型的偏微分方程组-Simulated two-dimensional BZ reaction-diffusion model, the method is to use explicit EULER method for solving partial differential equations model

// AHRS.c // S.O.H. Madgwick // 25th August 2010 // // Quaternion implementation of the DCM filter [Mayhony et al]. Incorporates the magnetic distortion // compensation algorithms from my filter [Madgwick] which eliminates the need for a re