Example #1
0
static void
test_ops(const size_t M, const size_t N,
         const double density, const gsl_rng *r)
{
  size_t i, j;
  int status;

  /* test gsl_spmatrix_add */
  {
    gsl_spmatrix *A = create_random_sparse(M, N, density, r);
    gsl_spmatrix *B = create_random_sparse(M, N, density, r);

    gsl_spmatrix *A_ccs = gsl_spmatrix_ccs(A);
    gsl_spmatrix *B_ccs = gsl_spmatrix_ccs(B);
    gsl_spmatrix *C_ccs = gsl_spmatrix_alloc_nzmax(M, N, 1, GSL_SPMATRIX_CCS);

    gsl_spmatrix *A_crs = gsl_spmatrix_crs(A);
    gsl_spmatrix *B_crs = gsl_spmatrix_crs(B);
    gsl_spmatrix *C_crs = gsl_spmatrix_alloc_nzmax(M, N, 1, GSL_SPMATRIX_CRS);
    
    gsl_spmatrix_add(C_ccs, A_ccs, B_ccs);
    gsl_spmatrix_add(C_crs, A_crs, B_crs);

    status = 0;
    for (i = 0; i < M; ++i)
      {
        for (j = 0; j < N; ++j)
          {
            double aij, bij, cij;

            aij = gsl_spmatrix_get(A_ccs, i, j);
            bij = gsl_spmatrix_get(B_ccs, i, j);
            cij = gsl_spmatrix_get(C_ccs, i, j);
            if (aij + bij != cij)
              status = 1;

            aij = gsl_spmatrix_get(A_crs, i, j);
            bij = gsl_spmatrix_get(B_crs, i, j);
            cij = gsl_spmatrix_get(C_crs, i, j);
            if (aij + bij != cij)
              status = 2;
          }
      }

    gsl_test(status == 1, "test_ops: add M="F_ZU" N="F_ZU" CCS", M, N);
    gsl_test(status == 2, "test_ops: add M="F_ZU" N="F_ZU" CRS", M, N);

    gsl_spmatrix_free(A);
    gsl_spmatrix_free(B);
    gsl_spmatrix_free(A_ccs);
    gsl_spmatrix_free(B_ccs);
    gsl_spmatrix_free(C_ccs);
    gsl_spmatrix_free(A_crs);
    gsl_spmatrix_free(B_crs);
    gsl_spmatrix_free(C_crs);
  }
} /* test_ops() */
Example #2
0
static gsl_spmatrix *
create_random_sparse(const size_t M, const size_t N, const double density,
                     const gsl_rng *r)
{
  size_t nnzwanted = (size_t) floor(M * N * GSL_MIN(density, 1.0));
  gsl_spmatrix *m = gsl_spmatrix_alloc_nzmax(M, N,
                                             nnzwanted,
                                             GSL_SPMATRIX_TRIPLET);
  size_t i;

  /* set diagonal entries to try to ensure non-singularity */
  for (i = 0; i < GSL_MIN(M, N); ++i)
    {
      double x = gsl_rng_uniform(r);
      gsl_spmatrix_set(m, i, i, x);
    }

  while (gsl_spmatrix_nnz(m) < nnzwanted)
    {
      /* generate a random row and column */
      size_t i = gsl_rng_uniform(r) * M;
      size_t j = gsl_rng_uniform(r) * N;

      /* generate random m_{ij} and add it */
      double x = gsl_rng_uniform(r);
      gsl_spmatrix_set(m, i, j, x);
    }

  return m;
} /* create_random_sparse() */
Example #3
0
File: test.c Project: atantet/gsl
static void
test_ops(const size_t M, const size_t N, const gsl_rng *r)
{
  size_t i, j;
  int status;

  /* test gsl_spmatrix_add */
  {
    gsl_spmatrix *Ta = create_random_sparse(M, N, 0.2, r);
    gsl_spmatrix *Tb = create_random_sparse(M, N, 0.2, r);
    gsl_spmatrix *a = gsl_spmatrix_compress(Ta, GSL_SPMATRIX_CCS);
    gsl_spmatrix *b = gsl_spmatrix_compress(Tb, GSL_SPMATRIX_CCS);
    gsl_spmatrix *c = gsl_spmatrix_alloc_nzmax(M, N, 1, GSL_SPMATRIX_CCS);
    gsl_spmatrix *ar = gsl_spmatrix_compress(Ta, GSL_SPMATRIX_CRS);
    gsl_spmatrix *br = gsl_spmatrix_compress(Tb, GSL_SPMATRIX_CRS);
    gsl_spmatrix *cr = gsl_spmatrix_alloc_nzmax(M, N, 1, GSL_SPMATRIX_CRS);

    gsl_spmatrix_add(c, a, b);
    gsl_spmatrix_add(cr, ar, br);

    status = 0;
    for (i = 0; i < M; ++i)
      {
	for (j = 0; j < N; ++j)
	  {
	    double aij = gsl_spmatrix_get(a, i, j);
	    double bij = gsl_spmatrix_get(b, i, j);
	    double cij = gsl_spmatrix_get(c, i, j);
	    double crij = gsl_spmatrix_get(cr, i, j);

	    if ((aij + bij != cij) || (aij + bij != crij))
	      status = 1;
	  }
      }

    gsl_test(status, "test_ops: _add M=%zu N=%zu compressed format", M, N);

    gsl_spmatrix_free(Ta);
    gsl_spmatrix_free(Tb);
    gsl_spmatrix_free(a);
    gsl_spmatrix_free(b);
    gsl_spmatrix_free(c);
    gsl_spmatrix_free(ar);
    gsl_spmatrix_free(br);
    gsl_spmatrix_free(cr);
  }
} /* test_ops() */
gsl_spmatrix *
gsl_spmatrix_ccs(const gsl_spmatrix *T)
{
  if (!GSL_SPMATRIX_ISTRIPLET(T))
    {
      GSL_ERROR_NULL("matrix must be in triplet format", GSL_EINVAL);
    }
  else
    {
      const size_t *Tj; /* column indices of triplet matrix */
      size_t *Cp;       /* column pointers of compressed column matrix */
      size_t *w;        /* copy of column pointers */
      gsl_spmatrix *m;
      size_t n;

      m = gsl_spmatrix_alloc_nzmax(T->size1, T->size2, T->nz,
                                   GSL_SPMATRIX_CCS);
      if (!m)
        return NULL;

      Tj = T->p;
      Cp = m->p;

      /* initialize column pointers to 0 */
      for (n = 0; n < m->size2 + 1; ++n)
        Cp[n] = 0;

      /*
       * compute the number of elements in each column:
       * Cp[j] = # non-zero elements in column j
       */
      for (n = 0; n < T->nz; ++n)
        Cp[Tj[n]]++;

      /* compute column pointers: p[j] = p[j-1] + nnz[j-1] */
      gsl_spmatrix_cumsum(m->size2, Cp);

      /* make a copy of the column pointers */
      w = (size_t *) m->work;
      for (n = 0; n < m->size2; ++n)
        w[n] = Cp[n];

      /* transfer data from triplet format to CCS */
      for (n = 0; n < T->nz; ++n)
        {
          size_t k = w[Tj[n]]++;
          m->i[k] = T->i[n];
          m->data[k] = T->data[n];
        }

      m->nz = T->nz;

      return m;
    }
}
Example #5
0
gsl_spmatrix *
gsl_spmatrix_alloc(const size_t n1, const size_t n2)
{
  const double density = 0.1; /* estimate */
  size_t nzmax = (size_t) round(n1 * n2 * density);

  if (nzmax == 0)
    nzmax = 10;

  return gsl_spmatrix_alloc_nzmax(n1, n2, nzmax, GSL_SPMATRIX_TRIPLET);
} /* gsl_spmatrix_alloc() */
Example #6
0
File: test.c Project: atantet/gsl
static gsl_spmatrix *
create_random_sparse(const size_t M, const size_t N, const double density,
		     const gsl_rng *r)
{
  size_t nnzwanted = (size_t) floor(M * N * GSL_MIN(density, 1.0));
  gsl_spmatrix *m = gsl_spmatrix_alloc_nzmax(M, N,
					     nnzwanted,
					     GSL_SPMATRIX_TRIPLET);

  while (gsl_spmatrix_nnz(m) < nnzwanted)
    {
      /* generate a random row and column */
      size_t i = gsl_rng_uniform(r) * M;
      size_t j = gsl_rng_uniform(r) * N;

      /* generate random m_{ij} and add it */
      double x = gsl_rng_uniform(r);
      gsl_spmatrix_set(m, i, j, x, 0);
    }

  return m;
} /* create_random_sparse() */
Example #7
0
static gsl_spmatrix *
create_random_sparse_int(const size_t M, const size_t N, const double density,
                         const gsl_rng *r)
{
  const double lower = 1.0;
  const double upper = 10.0;
  size_t nnzwanted = (size_t) floor(M * N * GSL_MIN(density, 1.0));
  gsl_spmatrix *m = gsl_spmatrix_alloc_nzmax(M, N,
                                             nnzwanted,
                                             GSL_SPMATRIX_TRIPLET);

  while (gsl_spmatrix_nnz(m) < nnzwanted)
    {
      /* generate a random row and column */
      size_t i = gsl_rng_uniform(r) * M;
      size_t j = gsl_rng_uniform(r) * N;

      /* generate random m_{ij} and add it */
      int x = (int) (gsl_rng_uniform(r) * (upper - lower) + lower);
      gsl_spmatrix_set(m, i, j, (double) x);
    }

  return m;
}
Example #8
0
File: test.c Project: atantet/gsl
void
test_manip(const size_t M, const size_t N, const double density,
	   const gsl_rng *r)
{
  int status;
  gsl_spmatrix *tri, *ccs, *crs, *test;
  gsl_matrix *dense, *denseDivRows, *denseDivCols;
  double sum, sumDense;
  gsl_vector *v;
  gsl_vector *denseRowSum, *denseColSum;
  size_t i, j;

  tri = create_random_sparse(M, N, density, r);
  dense = gsl_matrix_alloc(M, N);
  gsl_spmatrix_sp2d(dense, tri);

  /** Get row sum and col sum aswell as divided matrices for dense */
  denseDivRows = gsl_matrix_calloc(M, N);
  denseDivCols = gsl_matrix_calloc(M, N);  
  denseRowSum = gsl_vector_calloc(M);
  denseColSum = gsl_vector_calloc(N);
  sumDense = 0.;
  for (i = 0; i < M; i++)
    {
      for (j = 0; j < N; j++)
	{
	  denseRowSum->data[i * denseRowSum->stride] += gsl_matrix_get(dense, i, j);
	  denseColSum->data[j * denseColSum->stride] += gsl_matrix_get(dense, i, j);
	  sumDense += gsl_matrix_get(dense, i, j);
	}
    }
  for (i = 0; i < M; i++)
    {
      for (j = 0; j < N; j++)
	{
	  if (gsl_pow_2(denseRowSum->data[i * denseRowSum->stride]) > 1.e-12)
	    {
	      gsl_matrix_set(denseDivRows, i, j, gsl_matrix_get(dense, i, j)
			     / denseRowSum->data[i * denseRowSum->stride]);
	    }
	  else
	    {
	      gsl_matrix_set(denseDivRows, i, j, gsl_matrix_get(dense, i, j));
	    }

	  if (gsl_pow_2(denseColSum->data[j * denseColSum->stride]) > 1.e-12)
	    {
	      gsl_matrix_set(denseDivCols, i, j, gsl_matrix_get(dense, i, j)
			     / denseColSum->data[j * denseColSum->stride]);
	    }
	  else
	    {
	      gsl_matrix_set(denseDivCols, i, j, gsl_matrix_get(dense, i, j));
	    }
	}
    }
							   
  
  // Compress
  ccs = gsl_spmatrix_compress(tri, GSL_SPMATRIX_CCS);
  crs = gsl_spmatrix_compress(tri, GSL_SPMATRIX_CRS);

  
  /** TOTAL SUM */
  /** Triplet */
  sum = gsl_spmatrix_get_sum(tri);
  status = !(sum == sumDense);
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _get_sum triplet", M, N);
  
  /** CCS */
  sum = gsl_spmatrix_get_sum(ccs);
  status = !(sum == sumDense);
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _get_sum CCS", M, N);
  
  /** CRS */
  sum = gsl_spmatrix_get_sum(crs);
  status = !(sum == sumDense);
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _get_sum CRS", M, N);


  /** COLUMN SUM AND DIVIDE */
  /** Triplet */
  /* Sum */
  v = gsl_vector_alloc(M);
  gsl_spmatrix_get_rowsum(v, tri);
  status = 0;
  for (i = 0; i < M; i++)
    if (v->data[i * v->stride] != denseRowSum->data[i * denseRowSum->stride])
      status = 1;
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _get_rowsum triplet", M, N);
  /* Div */
  test = gsl_spmatrix_alloc_nzmax(crs->size1, crs->size2, 0, GSL_SPMATRIX_TRIPLET);
  gsl_spmatrix_memcpy(test, tri);
  gsl_spmatrix_div_rows(test, v);
  status = 0;
  for (i = 0; i < M; i++)
    {
      for (j = 0; j < N; j++)
	{
	  if (gsl_matrix_get(denseDivRows, i, j) != gsl_spmatrix_get(test, i, j))
	    status = 1;
	}
    }
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _div_rows triplet", M, N);
  gsl_vector_free(v);
  gsl_spmatrix_free(test);

  /** CCS */
  /* Sum */
  v = gsl_vector_alloc(M);
  gsl_spmatrix_get_rowsum(v, ccs);
  status = 0;
  for (i = 0; i < M; i++)
    if (v->data[i * v->stride] != denseRowSum->data[i * denseRowSum->stride])
      status = 1;
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _get_rowsum CCS", M, N);
  /* Div */
  test = gsl_spmatrix_alloc_nzmax(ccs->size1, ccs->size2, 0, GSL_SPMATRIX_CCS);
  gsl_spmatrix_memcpy(test, ccs);
  gsl_spmatrix_div_rows(test, v);
  status = 0;
  for (i = 0; i < M; i++)
    {
      for (j = 0; j < N; j++)
	{
	  if (gsl_matrix_get(denseDivRows, i, j) != gsl_spmatrix_get(test, i, j))
	    status = 1;
	}
    }
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _div_rows CCS", M, N);
  gsl_vector_free(v);
  gsl_spmatrix_free(test);
  
  /* CRS */
  /* Sum */
  v = gsl_vector_alloc(M);
  gsl_spmatrix_get_rowsum(v, crs);
  status = 0;
  for (i = 0; i < M; i++)
    if (v->data[i * v->stride] != denseRowSum->data[i * denseRowSum->stride])
      status = 1;
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _get_rowsum CRS", M, N);
  /* Div */
  test = gsl_spmatrix_alloc_nzmax(crs->size1, crs->size2, 0, GSL_SPMATRIX_CRS);
  gsl_spmatrix_memcpy(test, crs);
  gsl_spmatrix_div_rows(test, v);
  status = 0;
  for (i = 0; i < M; i++)
    {
      for (j = 0; j < N; j++)
	{
	  if (gsl_matrix_get(denseDivRows, i, j) != gsl_spmatrix_get(test, i, j))
	    status = 1;
	}
    }
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _div_rows CRS", M, N);
  gsl_vector_free(v);
  gsl_spmatrix_free(test);


  /** COLUMN SUM AND DIVIDE */
  /** Triplet */
  /* Sum */
  v = gsl_vector_alloc(N);
  gsl_spmatrix_get_colsum(v, tri);
  status = 0;
  for (j = 0; j < N; j++)
    if (v->data[j * v->stride] != denseColSum->data[j * denseColSum->stride])
      status = 1;
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _get_colsum triplet", M, N);
  /* Div */
  test = gsl_spmatrix_alloc_nzmax(tri->size1, tri->size2, 0, GSL_SPMATRIX_TRIPLET);
  gsl_spmatrix_memcpy(test, tri);
  gsl_spmatrix_div_cols(test, v);
  status = 0;
  for (i = 0; i < M; i++)
    {
      for (j = 0; j < N; j++)
	{
	  if (gsl_fcmp(gsl_matrix_get(denseDivCols, i, j), gsl_spmatrix_get(test, i, j), 1.e-12))
	    {
	      fprintf(stdout, "mismatch: (%zu, %zu) %lf != %lf\n", i, j, gsl_matrix_get(denseDivCols, i, j),
		      gsl_spmatrix_get(test, i, j));
	      status = 1;
	    }
	}
    }
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _div_cols triplet", M, N);
  gsl_vector_free(v);
  gsl_spmatrix_free(test);

  /** CCS */
  /** Sum */
  v = gsl_vector_alloc(N);
  gsl_spmatrix_get_colsum(v, ccs);
  status = 0;
  for (j = 0; j < N; j++)
    if (v->data[j * v->stride] != denseColSum->data[j * denseColSum->stride])
      status = 1;
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _get_colsum CCS", M, N);
  /** Div */
  test = gsl_spmatrix_alloc_nzmax(ccs->size1, ccs->size2, 0, GSL_SPMATRIX_CCS);
  gsl_spmatrix_memcpy(test, ccs);
  gsl_spmatrix_div_cols(test, v);
  status = 0;
  for (i = 0; i < M; i++)
    {
      for (j = 0; j < N; j++)
	{
	  if (gsl_matrix_get(denseDivCols, i, j) != gsl_spmatrix_get(test, i, j))
	    status = 1;
	}
    }
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _div_cols CCS", M, N);
  gsl_vector_free(v);
  gsl_spmatrix_free(test);
  
  /** CRS */
  /* Sum */
  v = gsl_vector_alloc(N);
  gsl_spmatrix_get_colsum(v, crs);
  status = 0;
  for (j = 0; j < N; j++)
    if (v->data[j * v->stride] != denseColSum->data[j * denseColSum->stride])
      status = 1;
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _get_colsum CRS", M, N);
  /* Div */
  test = gsl_spmatrix_alloc_nzmax(crs->size1, crs->size2, 0, GSL_SPMATRIX_CRS);
  gsl_spmatrix_memcpy(test, crs);
  gsl_spmatrix_div_cols(test, v);
  status = 0;
  for (i = 0; i < M; i++)
    {
      for (j = 0; j < N; j++)
	{
	  if (gsl_matrix_get(denseDivCols, i, j) != gsl_spmatrix_get(test, i, j))
	    status = 1;
	}
    }
  gsl_test(status, "test_manip: M=%zu N=%zu _get != _div_cols CRS", M, N);
  gsl_vector_free(v);
  gsl_spmatrix_free(test);


  /** Free */
  gsl_spmatrix_free(tri);
  gsl_spmatrix_free(ccs);
  gsl_spmatrix_free(crs);
  gsl_matrix_free(dense);
  gsl_matrix_free(denseDivRows);
  gsl_matrix_free(denseDivCols);
  gsl_vector_free(denseRowSum);
  gsl_vector_free(denseColSum);
  
  return;
}
Example #9
0
File: test.c Project: atantet/gsl
static void
test_memcpy(const size_t M, const size_t N, const gsl_rng *r)
{
  int status;

  {
    gsl_spmatrix *at = create_random_sparse(M, N, 0.2, r);
    gsl_spmatrix *ac = gsl_spmatrix_compress(at, GSL_SPMATRIX_CCS);
    gsl_spmatrix *ar = gsl_spmatrix_compress(at, GSL_SPMATRIX_CRS);
    gsl_spmatrix *bt, *bc, *br;

    bt = gsl_spmatrix_alloc(M, N);
    gsl_spmatrix_memcpy(bt, at);

    status = gsl_spmatrix_equal(at, bt) != 1;
    gsl_test(status, "test_memcpy: _memcpy M=%zu N=%zu triplet format", M, N);

    bc = gsl_spmatrix_alloc_nzmax(M, N, ac->nzmax, GSL_SPMATRIX_CCS);
    gsl_spmatrix_memcpy(bc, ac);

    status = gsl_spmatrix_equal(ac, bc) != 1;
    gsl_test(status, "test_memcpy: _memcpy M=%zu N=%zu compressed column format", M, N);

    br = gsl_spmatrix_alloc_nzmax(M, N, ar->nzmax, GSL_SPMATRIX_CRS);
    gsl_spmatrix_memcpy(br, ar);

    status = gsl_spmatrix_equal(ar, br) != 1;
    gsl_test(status, "test_memcpy: _memcpy M=%zu N=%zu compressed row format", M, N);

    gsl_spmatrix_free(at);
    gsl_spmatrix_free(ac);
    gsl_spmatrix_free(ar);
    gsl_spmatrix_free(bt);
    gsl_spmatrix_free(bc);
    gsl_spmatrix_free(br);
  }

  /* test transpose_memcpy */
  {
    gsl_spmatrix *A = create_random_sparse(M, N, 0.3, r);
    gsl_spmatrix *B = gsl_spmatrix_compress(A, GSL_SPMATRIX_CCS);
    gsl_spmatrix *BR = gsl_spmatrix_compress(A, GSL_SPMATRIX_CRS);
    gsl_spmatrix *AT = gsl_spmatrix_alloc(N, M);
    gsl_spmatrix *BT = gsl_spmatrix_alloc_nzmax(N, M, 1, GSL_SPMATRIX_CCS);
    gsl_spmatrix *BTR = gsl_spmatrix_alloc_nzmax(N, M, 1, GSL_SPMATRIX_CRS);
    size_t i, j;

    gsl_spmatrix_transpose_memcpy(AT, A);
    gsl_spmatrix_transpose_memcpy(BT, B);
    gsl_spmatrix_transpose_memcpy(BTR, BR);

    status = 0;
    for (i = 0; i < M; ++i)
      {
	for (j = 0; j < N; ++j)
	  {
	    double Aij = gsl_spmatrix_get(A, i, j);
	    double ATji = gsl_spmatrix_get(AT, j, i);

	    if (Aij != ATji)
	      status = 1;
	  }
      }

    gsl_test(status, "test_memcpy: _transpose_memcpy M=%zu N=%zu triplet format", M, N);

    status = 0;
    for (i = 0; i < M; ++i)
      {
	for (j = 0; j < N; ++j)
	  {
	    double Aij = gsl_spmatrix_get(A, i, j);
	    double Bij = gsl_spmatrix_get(B, i, j);
	    double BTji = gsl_spmatrix_get(BT, j, i);

	    if ((Bij != BTji) || (Aij != Bij))
	      status = 1;
	  }
      }

    gsl_test(status, "test_memcpy: _transpose_memcpy M=%zu N=%zu column format", M, N);

    status = 0;
    for (i = 0; i < M; ++i)
      {
	for (j = 0; j < N; ++j)
	  {
	    double Aij = gsl_spmatrix_get(A, i, j);
	    double BRij = gsl_spmatrix_get(BR, i, j);
	    double BTRji = gsl_spmatrix_get(BTR, j, i);
	    
	    if ((Aij != BRij) || (BRij != BTRji))
	      status = 1;
	  }
      }
    gsl_test(status, "test_memcpy: _transpose_memcpy M=%zu N=%zu row format", M, N);

    gsl_spmatrix_free(A);
    gsl_spmatrix_free(AT);
    gsl_spmatrix_free(B);
    gsl_spmatrix_free(BT);
    gsl_spmatrix_free(BR);
    gsl_spmatrix_free(BTR);
  }
} /* test_memcpy() */
Example #10
0
static void
test_io_binary(const size_t M, const size_t N,
               const double density, const gsl_rng *r)
{
  int status;
  gsl_spmatrix *A = create_random_sparse(M, N, density, r);
  gsl_spmatrix *A_ccs, *A_crs;

  char filename[] = "test.XXXXXX";
#if !defined( _WIN32 )
  int fd = mkstemp(filename);
#else
  char * fd = _mktemp(filename);
# define fdopen fopen
#endif

  /* test triplet I/O */
  {
    FILE *f = fdopen(fd, "wb");

    gsl_spmatrix_fwrite(f, A);

    fclose(f);
  }

  {
    FILE *f = fopen(filename, "rb");
    gsl_spmatrix *B = gsl_spmatrix_alloc_nzmax(M, N, A->nz, A->sptype);

    gsl_spmatrix_fread(f, B);

    status = gsl_spmatrix_equal(A, B) != 1;
    gsl_test(status, "test_io_binary: fwrite/fread M="F_ZU" N="F_ZU" triplet format", M, N);

    fclose(f);
    gsl_spmatrix_free(B);
  }

  /* test CCS I/O */
  A_ccs = gsl_spmatrix_ccs(A);

  {
    FILE *f = fopen(filename, "wb");

    gsl_spmatrix_fwrite(f, A_ccs);

    fclose(f);
  }

  {
    FILE *f = fopen(filename, "rb");
    gsl_spmatrix *B = gsl_spmatrix_alloc_nzmax(M, N, A->nz, GSL_SPMATRIX_CCS);

    gsl_spmatrix_fread(f, B);

    status = gsl_spmatrix_equal(A_ccs, B) != 1;
    gsl_test(status, "test_io_binary: fwrite/fread M="F_ZU" N="F_ZU" CCS format", M, N);

    fclose(f);
    gsl_spmatrix_free(B);
  }

  /* test CRS I/O */
  A_crs = gsl_spmatrix_crs(A);

  {
    FILE *f = fopen(filename, "wb");

    gsl_spmatrix_fwrite(f, A_crs);

    fclose(f);
  }

  {
    FILE *f = fopen(filename, "rb");
    gsl_spmatrix *B = gsl_spmatrix_alloc_nzmax(M, N, A->nz, GSL_SPMATRIX_CRS);

    gsl_spmatrix_fread(f, B);

    status = gsl_spmatrix_equal(A_crs, B) != 1;
    gsl_test(status, "test_io_binary: fwrite/fread M="F_ZU" N="F_ZU" CRS format", M, N);

    fclose(f);
    gsl_spmatrix_free(B);
  }

  unlink(filename);

  gsl_spmatrix_free(A);
  gsl_spmatrix_free(A_ccs);
  gsl_spmatrix_free(A_crs);
}
Example #11
0
static void
test_transpose(const size_t M, const size_t N,
               const double density, const gsl_rng *r)
{
  int status;
  gsl_spmatrix *A = create_random_sparse(M, N, density, r);
  gsl_spmatrix *AT = gsl_spmatrix_alloc_nzmax(M, N, A->nz, A->sptype);
  gsl_spmatrix *AT2 = gsl_spmatrix_alloc_nzmax(M, N, A->nz, A->sptype);
  gsl_spmatrix *AT2_ccs, *AT2_crs;
  size_t i, j;

  /* test triplet transpose */

  gsl_spmatrix_memcpy(AT, A);
  gsl_spmatrix_memcpy(AT2, A);

  gsl_spmatrix_transpose(AT);
  gsl_spmatrix_transpose2(AT2);

  status = 0;
  for (i = 0; i < M; ++i)
    {
      for (j = 0; j < N; ++j)
        {
          double Aij = gsl_spmatrix_get(A, i, j);
          double ATji = gsl_spmatrix_get(AT, j, i);
          double AT2ji = gsl_spmatrix_get(AT2, j, i);

          if (Aij != ATji)
            status = 1;

          if (Aij != AT2ji)
            status = 2;
        }
    }

  gsl_test(status == 1, "test_transpose: transpose M="F_ZU" N="F_ZU" triplet format",
           M, N);
  gsl_test(status == 2, "test_transpose: transpose2 M="F_ZU" N="F_ZU" triplet format",
           M, N);

  /* test CCS transpose */

  AT2_ccs = gsl_spmatrix_ccs(A);
  gsl_spmatrix_transpose2(AT2_ccs);

  status = 0;
  for (i = 0; i < M; ++i)
    {
      for (j = 0; j < N; ++j)
        {
          double Aij = gsl_spmatrix_get(A, i, j);
          double AT2ji = gsl_spmatrix_get(AT2_ccs, j, i);

          if (Aij != AT2ji)
            status = 2;
        }
    }

  gsl_test(status == 2, "test_transpose: transpose2 M="F_ZU" N="F_ZU" CCS format",
           M, N);

  /* test CRS transpose */

  AT2_crs = gsl_spmatrix_crs(A);
  gsl_spmatrix_transpose2(AT2_crs);

  status = 0;
  for (i = 0; i < M; ++i)
    {
      for (j = 0; j < N; ++j)
        {
          double Aij = gsl_spmatrix_get(A, i, j);
          double AT2ji = gsl_spmatrix_get(AT2_crs, j, i);

          if (Aij != AT2ji)
            status = 2;
        }
    }

  gsl_test(status == 2, "test_transpose: transpose2 M="F_ZU" N="F_ZU" CRS format",
           M, N);

  gsl_spmatrix_free(A);
  gsl_spmatrix_free(AT);
  gsl_spmatrix_free(AT2);
  gsl_spmatrix_free(AT2_ccs);
  gsl_spmatrix_free(AT2_crs);
}
Example #12
0
static void
test_memcpy(const size_t M, const size_t N,
            const double density, const gsl_rng *r)
{
  int status;

  {
    gsl_spmatrix *A = create_random_sparse(M, N, density, r);
    gsl_spmatrix *A_ccs = gsl_spmatrix_ccs(A);
    gsl_spmatrix *A_crs = gsl_spmatrix_crs(A);
    gsl_spmatrix *B_t, *B_ccs, *B_crs;
  
    B_t = gsl_spmatrix_alloc(M, N);
    gsl_spmatrix_memcpy(B_t, A);

    status = gsl_spmatrix_equal(A, B_t) != 1;
    gsl_test(status, "test_memcpy: _memcpy M="F_ZU" N="F_ZU" triplet format", M, N);

    B_ccs = gsl_spmatrix_alloc_nzmax(M, N, A_ccs->nzmax, GSL_SPMATRIX_CCS);
    B_crs = gsl_spmatrix_alloc_nzmax(M, N, A_ccs->nzmax, GSL_SPMATRIX_CRS);

    gsl_spmatrix_memcpy(B_ccs, A_ccs);
    gsl_spmatrix_memcpy(B_crs, A_crs);

    status = gsl_spmatrix_equal(A_ccs, B_ccs) != 1;
    gsl_test(status, "test_memcpy: _memcpy M="F_ZU" N="F_ZU" CCS", M, N);

    status = gsl_spmatrix_equal(A_crs, B_crs) != 1;
    gsl_test(status, "test_memcpy: _memcpy M="F_ZU" N="F_ZU" CRS", M, N);

    gsl_spmatrix_free(A);
    gsl_spmatrix_free(A_ccs);
    gsl_spmatrix_free(A_crs);
    gsl_spmatrix_free(B_t);
    gsl_spmatrix_free(B_ccs);
    gsl_spmatrix_free(B_crs);
  }

  /* test transpose_memcpy */
  {
    gsl_spmatrix *A = create_random_sparse(M, N, density, r);
    gsl_spmatrix *AT = gsl_spmatrix_alloc(N, M);
    gsl_spmatrix *B = gsl_spmatrix_ccs(A);
    gsl_spmatrix *BT = gsl_spmatrix_alloc_nzmax(N, M, 1, GSL_SPMATRIX_CCS);
    gsl_spmatrix *C = gsl_spmatrix_crs(A);
    gsl_spmatrix *CT = gsl_spmatrix_alloc_nzmax(N, M, 1, GSL_SPMATRIX_CRS);
    size_t i, j;

    gsl_spmatrix_transpose_memcpy(AT, A);
    gsl_spmatrix_transpose_memcpy(BT, B);
    gsl_spmatrix_transpose_memcpy(CT, C);

    status = 0;
    for (i = 0; i < M; ++i)
      {
        for (j = 0; j < N; ++j)
          {
            double Aij = gsl_spmatrix_get(A, i, j);
            double ATji = gsl_spmatrix_get(AT, j, i);

            if (Aij != ATji)
              status = 1;
          }
      }

    gsl_test(status, "test_memcpy: _transpose_memcpy M="F_ZU" N="F_ZU" triplet format", M, N);

    status = 0;
    for (i = 0; i < M; ++i)
      {
        for (j = 0; j < N; ++j)
          {
            double Aij = gsl_spmatrix_get(A, i, j);
            double Bij = gsl_spmatrix_get(B, i, j);
            double BTji = gsl_spmatrix_get(BT, j, i);

            if ((Bij != BTji) || (Aij != Bij))
              status = 1;
          }
      }

    gsl_test(status, "test_memcpy: _transpose_memcpy M="F_ZU" N="F_ZU" CCS format", M, N);

    status = 0;
    for (i = 0; i < M; ++i)
      {
        for (j = 0; j < N; ++j)
          {
            double Aij = gsl_spmatrix_get(A, i, j);
            double Cij = gsl_spmatrix_get(C, i, j);
            double CTji = gsl_spmatrix_get(CT, j, i);

            if ((Cij != CTji) || (Aij != Cij))
              status = 1;
          }
      }

    gsl_test(status, "test_memcpy: _transpose_memcpy M="F_ZU" N="F_ZU" CRS format", M, N);

    gsl_spmatrix_free(A);
    gsl_spmatrix_free(AT);
    gsl_spmatrix_free(B);
    gsl_spmatrix_free(BT);
    gsl_spmatrix_free(C);
    gsl_spmatrix_free(CT);
  }
} /* test_memcpy() */
Example #13
0
int
main (void)
{
  const size_t p = 2000;
  const size_t n = p + 1;
  gsl_vector *f = gsl_vector_alloc(n);
  gsl_vector *x = gsl_vector_alloc(p);

  /* allocate sparse Jacobian matrix with 2*p non-zero elements in triplet format */
  gsl_spmatrix *J = gsl_spmatrix_alloc_nzmax(n, p, 2 * p, GSL_SPMATRIX_TRIPLET);

  gsl_multilarge_nlinear_fdf fdf;
  gsl_multilarge_nlinear_parameters fdf_params =
    gsl_multilarge_nlinear_default_parameters();
  struct model_params params;
  size_t i;

  params.alpha = 1.0e-5;
  params.J = J;

  /* define function to be minimized */
  fdf.f = penalty_f;
  fdf.df = penalty_df;
  fdf.fvv = penalty_fvv;
  fdf.n = n;
  fdf.p = p;
  fdf.params = &params;

  for (i = 0; i < p; ++i)
    {
      /* starting point */
      gsl_vector_set(x, i, i + 1.0);

      /* store sqrt(alpha)*I_p in upper p-by-p block of J */
      gsl_spmatrix_set(J, i, i, sqrt(params.alpha));
    }

  fprintf(stderr, "%-25s %-4s %-4s %-5s %-6s %-4s %-10s %-10s %-7s %-11s %-10s\n",
          "Method", "NITER", "NFEV", "NJUEV", "NJTJEV", "NAEV", "Init Cost",
          "Final cost", "cond(J)", "Final |x|^2", "Time (s)");
  
  fdf_params.scale = gsl_multilarge_nlinear_scale_levenberg;

  fdf_params.trs = gsl_multilarge_nlinear_trs_lm;
  solve_system(x, &fdf, &fdf_params);

  fdf_params.trs = gsl_multilarge_nlinear_trs_lmaccel;
  solve_system(x, &fdf, &fdf_params);

  fdf_params.trs = gsl_multilarge_nlinear_trs_dogleg;
  solve_system(x, &fdf, &fdf_params);

  fdf_params.trs = gsl_multilarge_nlinear_trs_ddogleg;
  solve_system(x, &fdf, &fdf_params);

  fdf_params.trs = gsl_multilarge_nlinear_trs_cgst;
  solve_system(x, &fdf, &fdf_params);

  gsl_vector_free(f);
  gsl_vector_free(x);
  gsl_spmatrix_free(J);

  return 0;
}