public Matrix subtract ( final Matrix m ) throws MatrixException { // Validate m's size. if ( ( m_nRows != m . m_nRows ) && ( m_nCols != m . m_nCols ) ) { throw new MatrixException ( MatrixException . INVALID_DIMENSIONS ) ; } final float dv [ ] [ ] = new float [ m_nRows ] [ m_nCols ] ; // difference values // Compute values of the difference. for ( int r = 0 ; r < m_nRows ; ++ r ) { for ( int c = 0 ; c < m_nCols ; ++ c ) { dv [ r ] [ c ] = m_aValues [ r ] [ c ] - m . m_aValues [ r ] [ c ] ; } } return new Matrix ( dv ) ; }
Subtract another matrix from this matrix .