matrix.ino

/*

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 <http://www.gnu.org/licenses/>.

*/

/**************************************************/
//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];
    }
  }
}