// x_tmp = A[0][0] * x[0] + y;
		if(x[0] < 0) p = -x[0]; else p = x[0];
		tmp = p >> 6;
		sum = tmp;
		tmp >>= 2;
		sum += tmp;
		if(x[0] < 0){
			x_tmp =  sum;
		}else{
			x_tmp =- sum;
		}
		x[0] = x_tmp + y;

		// x_tmp = A[1][1] * x[1] + A[1][2] * x[2]
		if(x[1] < 0) p = -x[1]; else p = x[1];
		tmp = p >> 1;
		sum = tmp;
		tmp >>= 2;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		tmp >>= 3;
		sum += tmp;
		if(x[1] < 0){
			x_tmp =  sum;
		}else{
			x_tmp =- sum;
		}
		if(x[2] < 0) p = -x[2]; else p = x[2];
		tmp = p >> 3;
		sum = tmp;
		tmp >>= 3;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		if(x[2] < 0){
			x_tmp += sum;
		}else{
			x_tmp -= sum;
		}
		x[2] = x[1];
		x[1] = x_tmp + y;

		// x_tmp = A[3][3] * x[3] + A[3][4] * x[4]
		if(x[3] < 0) p = -x[3]; else p = x[3];
		tmp = p >> 6;
		sum = tmp;
		tmp >>= 2;
		sum += tmp;
		if(x[3] < 0){
			x_tmp =  sum;
		}else{
			x_tmp =- sum;
		}
		if(x[4] < 0) p = -x[4]; else p = x[4];
		tmp = p >> 3;
		sum = tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		if(x[4] < 0){
			x_tmp += sum;
		}else{
			x_tmp -= sum;
		}
		x[4] = x[3];
		x[3] = x_tmp + y;

		// x_tmp = A[5][5] * x[5] + A[5][6] * x[6]
		if(x[5] < 0) p = -x[5]; else p = x[5];
		tmp = p >> 1;
		sum = tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		if(x[5] < 0){
			x_tmp =- sum;
		}else{
			x_tmp =  sum;
		}
		if(x[6] < 0) p = -x[6]; else p = x[6];
		tmp = p >> 1;
		sum = tmp;
		tmp >>= 8;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		if(x[6] < 0){
			x_tmp += sum;
		}else{
			x_tmp -= sum;
		}
		x[6] = x[5];
		x[5] = x_tmp + y;

		// x_tmp = A[7][7] * x[7] + A[7][8] * x[8]
		if(x[7] < 0) p = -x[7]; else p = x[7];
		tmp = p;
		sum = tmp;
		tmp >>= 2;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 3;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		if(x[7] < 0){
			x_tmp =- sum;
		}else{
			x_tmp =  sum;
		}
		if(x[8] < 0) p = -x[8]; else p = x[8];
		tmp = p >> 1;
		sum = tmp;
		tmp >>= 6;
		sum += tmp;
		tmp >>= 3;
		sum += tmp;
		if(x[8] < 0){
			x_tmp += sum;
		}else{
			x_tmp -= sum;
		}
		x[8] = x[7];
		x[7] = x_tmp + y;

		// x_tmp = A[9][9] * x[9] + A[9][10] * x[10]
		if(x[9] < 0) p = -x[9]; else p = x[9];
		tmp = p >> 1;
		sum = tmp;
		tmp >>= 2;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		if(x[9] < 0){
			x_tmp =  sum;
		}else{
			x_tmp =- sum;
		}
		if(x[10] < 0) p = -x[10]; else p = x[10];
		tmp = p >> 1;
		sum = tmp;
		tmp >>= 4;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		if(x[10] < 0){
			x_tmp += sum;
		}else{
			x_tmp -= sum;
		}
		x[10] = x[9];
		x[9] = x_tmp + y;

		// x_tmp = A[11][11] * x[11] + y;
		if(x[11] < 0) p = -x[11]; else p = x[11];
		tmp = p >> 1;
		sum = tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 3;
		sum += tmp;
		if(x[11] < 0){
			x_tmp =  sum;
		}else{
			x_tmp =- sum;
		}
		x[11] = x_tmp + y;

		// x_tmp = A[12][12] * x[12] + A[12][13] * x[13]
		if(x[12] < 0) p = -x[12]; else p = x[12];
		tmp = p;
		sum = tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 6;
		sum += tmp;
		if(x[12] < 0){
			x_tmp =  sum;
		}else{
			x_tmp =- sum;
		}
		if(x[13] < 0) p = -x[13]; else p = x[13];
		tmp = p >> 1;
		sum = tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		if(x[13] < 0){
			x_tmp += sum;
		}else{
			x_tmp -= sum;
		}
		x[13] = x[12];
		x[12] = x_tmp + y;

		// x_tmp = A[14][14] * x[14] + A[14][15] * x[15]
		if(x[14] < 0) p = -x[14]; else p = x[14];
		tmp = p;
		sum = tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 3;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		if(x[14] < 0){
			x_tmp =- sum;
		}else{
			x_tmp =  sum;
		}
		if(x[15] < 0) p = -x[15]; else p = x[15];
		tmp = p >> 1;
		sum = tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 1;
		sum += tmp;
		tmp >>= 3;
		sum += tmp;
		tmp >>= 2;
		sum += tmp;
		if(x[15] < 0){
			x_tmp += sum;
		}else{
			x_tmp -= sum;
		}
		x[15] = x[14];
		x[14] = x_tmp + y;