1 files changed, 62 insertions, 0 deletions
diff --git a/gsl-1.9/integration/ptsort.c b/gsl-1.9/integration/ptsort.c
new file mode 100644
index 0000000..3ff86b1
--- /dev/null
+++ b/gsl-1.9/integration/ptsort.c
@@ -0,0 +1,62 @@
+/* integration/ptsort.c
+ * 
+ * Copyright (C) 1996, 1997, 1998, 1999, 2000 Brian Gough
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+static void
+sort_results (gsl_integration_workspace * workspace);
+
+static void
+sort_results (gsl_integration_workspace * workspace)
+{
+  size_t i;
+  
+  double * elist = workspace->elist ;
+  size_t * order = workspace->order ;
+
+  size_t nint = workspace->size;
+
+  for (i = 0; i < nint; i++)
+    {
+      size_t i1 = order[i];
+      double e1 = elist[i1];
+      size_t i_max = i1;
+      size_t j;
+
+      for (j = i + 1; j < nint; j++)
+        {
+          size_t i2 = order[j];
+          double e2 = elist[i2];
+
+          if (e2 >= e1)
+            {
+              i_max = i2;
+              e1 = e2;
+            }
+        }
+
+      if (i_max != i1)
+        {
+          order[i] = order[i_max];
+          order[i_max] = i1;
+        }
+    }
+
+  workspace->i = order[0] ;
+}
+
+