double *Acur;
long bA = (3*DIM+1)*DIM;
//to do add the biais at the end on the SML side

void mv (long arity, double A[], double X[], double Y[]) {
  long indim = arity * DIM + 1;
  cblas_dgemv (CblasRowMajor,CblasNoTrans,DIM,indim,1.0,A,indim,X,1,0.0,Y,1);
  }

void mv_head (long out, double A[], double X[], double Y[]) {
  long indim = DIM + 1;
  cblas_dgemv (CblasRowMajor,CblasNoTrans,out,indim,1.0,A,indim,X,1,0.0,Y,1);
  }

void vtanh (long size, double Y[]) {
  for (long i = 0; i < size; ++i) {Y[i] = tanh (Y[i]);}
  }

void fp_op (long op, double X[], double Y[]) 
  {
  Acur = A + bA * op;
  if (HEAD[op] > 0) {mv_head (HEAD[op], Acur, X, Y); vtanh (HEAD[op],Y);}
  else if (ARITY[op] == 0) 
    {mv (ARITY[op],Acur,X,Y);}
  else {mv (ARITY[op],Acur,X,Y); vtanh (DIM,Y);}
  }

int main () {return 0;};