/* MinIMU-9-Arduino-AHRS Pololu MinIMU-9 + Arduino AHRS (Attitude and Heading Reference System) Copyright (c) 2011 Pololu Corporation. http://www.pololu.com/ MinIMU-9-Arduino-AHRS is based on sf9domahrs by Doug Weibel and Jose Julio: http://code.google.com/p/sf9domahrs/ sf9domahrs is based on ArduIMU v1.5 by Jordi Munoz and William Premerlani, Jose Julio and Doug Weibel: http://code.google.com/p/ardu-imu/ MinIMU-9-Arduino-AHRS is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. MinIMU-9-Arduino-AHRS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with MinIMU-9-Arduino-AHRS. If not, see . */ /**************************************************/ //Multiply two 3x3 matrixs. This function developed by Jordi can be easily adapted to multiple n*n matrix's. (Pero me da flojera!). void Matrix_Multiply(float a[3][3], float b[3][3],float mat[3][3]) { float op[3]; for(int x=0; x<3; x++) { for(int y=0; y<3; y++) { for(int w=0; w<3; w++) { op[w]=a[x][w]*b[w][y]; } mat[x][y]=0; mat[x][y]=op[0]+op[1]+op[2]; float test=mat[x][y]; } } }