5 #include <gsl/gsl_errno.h>
6 #include <gsl/gsl_vector.h>
7 #include <gsl/gsl_blas.h>
8 #include <gsl/gsl_test.h>
10 #include <gsl/gsl_wavelet.h>
11 #include <gsl/gsl_wavelet2d.h>
20 static unsigned long int x = 1;
21 x = (1103515245 * x + 12345) & 0x7fffffffUL;
22 return x / 2147483648.0;
25 const size_t member[N_BS] =
26 { 309, 307, 305, 303, 301, 208, 206, 204, 202, 105, 103 };
29 test_1d (size_t N, size_t stride, const gsl_wavelet_type * T, size_t member);
32 test_2d (size_t N, size_t tda, const gsl_wavelet_type * T, size_t member, int type);
35 main (int argc, char **argv)
37 size_t i, N, stride, tda;
38 const int S = 1, NS = 2; /* Standard & Non-standard transforms */
40 /* One-dimensional tests */
42 for (N = 1; N <= 16384; N *= 2)
44 for (stride = 1; stride <= 5; stride++)
46 for (i = 0; i < N_BS; i++)
48 test_1d (N, stride, gsl_wavelet_bspline, member[i]);
49 test_1d (N, stride, gsl_wavelet_bspline_centered, member[i]);
52 for (i = 4; i <= 20; i += 2)
54 test_1d (N, stride, gsl_wavelet_daubechies, i);
55 test_1d (N, stride, gsl_wavelet_daubechies_centered, i);
58 test_1d (N, stride, gsl_wavelet_haar, 2);
59 test_1d (N, stride, gsl_wavelet_haar_centered, 2);
63 /* Two-dimensional tests */
65 for (N = 1; N <= 64; N *= 2)
67 for (tda = N; tda <= N + 5; tda++)
69 for (i = 0; i < N_BS; i++)
71 test_2d (N, tda, gsl_wavelet_bspline, member[i], S);
72 test_2d (N, tda, gsl_wavelet_bspline_centered, member[i], S);
74 test_2d (N, tda, gsl_wavelet_bspline, member[i], NS);
75 test_2d (N, tda, gsl_wavelet_bspline_centered, member[i], NS);
78 for (i = 4; i <= 20; i += 2)
80 test_2d (N, tda, gsl_wavelet_daubechies, i, S);
81 test_2d (N, tda, gsl_wavelet_daubechies_centered, i, S);
83 test_2d (N, tda, gsl_wavelet_daubechies, i, NS);
84 test_2d (N, tda, gsl_wavelet_daubechies_centered, i, NS);
87 test_2d (N, tda, gsl_wavelet_haar, 2, S);
88 test_2d (N, tda, gsl_wavelet_haar_centered, 2, S);
90 test_2d (N, tda, gsl_wavelet_haar, 2, NS);
91 test_2d (N, tda, gsl_wavelet_haar_centered, 2, NS);
95 exit (gsl_test_summary ());
100 test_1d (size_t N, size_t stride, const gsl_wavelet_type * T, size_t member)
102 gsl_wavelet_workspace *work;
103 gsl_vector *v1, *v2, *vdelta;
108 double *data = malloc (N * stride * sizeof (double));
110 for (i = 0; i < N * stride; i++)
111 data[i] = 12345.0 + i;
113 v = gsl_vector_view_array_with_stride (data, stride, N);
116 for (i = 0; i < N; i++)
118 gsl_vector_set (v1, i, urand ());
121 v2 = gsl_vector_alloc (N);
122 gsl_vector_memcpy (v2, v1);
124 vdelta = gsl_vector_alloc (N);
126 work = gsl_wavelet_workspace_alloc (N);
128 w = gsl_wavelet_alloc (T, member);
130 gsl_wavelet_transform_forward (w, v2->data, v2->stride, v2->size, work);
131 gsl_wavelet_transform_inverse (w, v2->data, v2->stride, v2->size, work);
133 for (i = 0; i < N; i++)
135 double x1 = gsl_vector_get (v1, i);
136 double x2 = gsl_vector_get (v2, i);
137 gsl_vector_set (vdelta, i, fabs (x1 - x2));
142 i = gsl_vector_max_index (vdelta);
143 x1 = gsl_vector_get (v1, i);
144 x2 = gsl_vector_get (v2, i);
146 gsl_test (fabs (x2 - x1) > N * 1e-15,
147 "%s(%d), n = %d, stride = %d, maxerr = %g",
148 gsl_wavelet_name (w), member, N, stride, fabs (x2 - x1));
155 for (i = 0; i < N * stride; i++)
160 status |= (data[i] != (12345.0 + i));
163 gsl_test (status, "%s(%d) other data untouched, n = %d, stride = %d",
164 gsl_wavelet_name (w), member, N, stride);
167 gsl_wavelet_workspace_free (work);
168 gsl_wavelet_free (w);
169 gsl_vector_free (vdelta);
170 gsl_vector_free (v2);
176 test_2d (size_t N, size_t tda, const gsl_wavelet_type * T, size_t member, int type)
178 gsl_wavelet_workspace *work;
187 double *data = malloc (N * tda * sizeof (double));
189 const char * typename;
191 typename = (type == 1) ? "standard" : "nonstd" ;
193 for (i = 0; i < N * tda; i++)
194 data[i] = 12345.0 + i;
196 m = gsl_matrix_view_array_with_tda (data, N, N, tda);
199 for (i = 0; i < N; i++)
201 for (j = 0; j < N; j++)
203 gsl_matrix_set (m1, i, j, urand());
207 m2 = gsl_matrix_alloc (N, N);
208 gsl_matrix_memcpy (m2, m1);
210 mdelta = gsl_matrix_alloc (N, N);
212 work = gsl_wavelet_workspace_alloc (N);
214 w = gsl_wavelet_alloc (T, member);
219 gsl_wavelet2d_transform_matrix_forward (w, m2, work);
220 gsl_wavelet2d_transform_matrix_inverse (w, m2, work);
223 gsl_wavelet2d_nstransform_matrix_forward (w, m2, work);
224 gsl_wavelet2d_nstransform_matrix_inverse (w, m2, work);
228 for (i = 0; i < N; i++)
230 for (j = 0; j < N; j++)
232 double x1 = gsl_matrix_get (m1, i, j);
233 double x2 = gsl_matrix_get (m2, i, j );
234 gsl_matrix_set (mdelta, i, j, fabs (x1 - x2));
240 gsl_matrix_max_index (mdelta, &i, &j);
241 x1 = gsl_matrix_get (m1, i, j);
242 x2 = gsl_matrix_get (m2, i, j);
244 gsl_test (fabs (x2 - x1) > N * 1e-15,
245 "%s(%d)-2d %s, n = %d, tda = %d, maxerr = %g",
246 gsl_wavelet_name (w), member, typename, N, tda, fabs (x2 - x1));
253 for (i = 0; i < N ; i++)
255 for (j = N; j < tda; j++)
257 status |= (data[i*tda+j] != (12345.0 + (i*tda+j)));
261 gsl_test (status, "%s(%d)-2d %s other data untouched, n = %d, tda = %d",
262 gsl_wavelet_name (w), member, typename, N, tda);
266 gsl_wavelet_workspace_free (work);
267 gsl_wavelet_free (w);
268 gsl_matrix_free (m2);
269 gsl_matrix_free (mdelta);