X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Fdesign-matrix.c;h=e991d2a398b007acd2c51d66cf49b6664872eb95;hb=6ef859a7962e2d98b192844b07f39017df11681b;hp=298d03357b7208e66392c0b15bec0eb9e0f0146b;hpb=d030506bfdce24f229ada8b5610d341a2a80e866;p=pspp

diff --git a/src/math/design-matrix.c b/src/math/design-matrix.c
index 298d03357b..e991d2a398 100644
--- a/src/math/design-matrix.c
+++ b/src/math/design-matrix.c
@@ -191,3 +191,25 @@ design_matrix_set_numeric (struct design_matrix *dm, size_t row,
   assert (col != DM_COLUMN_NOT_FOUND);
   gsl_matrix_set (dm->m, row, col, val->f);
 }
+
+struct design_matrix *
+design_matrix_clone (const struct design_matrix *dm)
+{
+  struct design_matrix *result;
+  size_t i;
+  size_t j;
+  
+  assert (dm != NULL);
+  result = xmalloc (sizeof *result);
+  result->vars = xnmalloc (dm->n_vars, sizeof *dm->vars);
+  result->n_vars = dm->n_vars;
+  result->m = gsl_matrix_alloc (dm->m->size1, dm->m->size2);
+  
+  gsl_matrix_memcpy (result->m, dm->m);
+  for (i = 0; i < result->n_vars; i++)
+    {
+      result->vars[i] = dm->vars[i];
+    }
+  return result;
+}
+