1 files changed, 107 insertions, 0 deletions
diff --git a/gsl-1.9/vector/swap_source.c b/gsl-1.9/vector/swap_source.c
new file mode 100644
index 0000000..816cb6e
--- /dev/null
+++ b/gsl-1.9/vector/swap_source.c
@@ -0,0 +1,107 @@
+/* vector/swap_source.c
+ * 
+ * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman, 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.
+ */
+
+int
+FUNCTION (gsl_vector, swap) (TYPE (gsl_vector) * v, TYPE (gsl_vector) * w)
+{
+  ATOMIC * d1 = v->data ;
+  ATOMIC * d2 = w->data ;
+  const size_t size = v->size ;
+  const size_t s1 = MULTIPLICITY * v->stride ;
+  const size_t s2 = MULTIPLICITY * w->stride ;
+  size_t i, k ;
+
+  if (v->size != w->size)
+    {
+      GSL_ERROR("vector lengths must be equal", GSL_EINVAL);
+    }
+
+  for (i = 0; i < size; i++)
+    {
+      for (k = 0; k < MULTIPLICITY; k++)
+        {
+          ATOMIC tmp = d1[i*s1 + k];
+          d1[i*s1+k] = d2[i*s2 + k];
+          d2[i*s2+k] = tmp;
+        }
+    }
+  
+  return GSL_SUCCESS;
+}
+
+int
+FUNCTION (gsl_vector, swap_elements) (TYPE (gsl_vector) * v, const size_t i, const size_t j)
+{
+  ATOMIC * data = v->data ;
+  const size_t size = v->size ;
+  const size_t stride = v->stride ;
+
+  if (i >= size)
+    {
+      GSL_ERROR("first index is out of range", GSL_EINVAL);
+    }
+
+  if (j >= size)
+    {
+      GSL_ERROR("second index is out of range", GSL_EINVAL);
+    }
+
+  if (i != j)
+    {
+      const size_t s = MULTIPLICITY * stride ;
+      size_t k ;
+
+      for (k = 0; k < MULTIPLICITY; k++)
+        {
+          ATOMIC tmp = data[j*s + k];
+          data[j*s+k] = data[i*s + k];
+          data[i*s+k] = tmp;
+        }
+    }
+  
+  return GSL_SUCCESS;
+}
+
+int
+FUNCTION (gsl_vector, reverse) (TYPE (gsl_vector) * v)
+{
+  ATOMIC * data = v->data ;
+  const size_t size = v->size ;
+  const size_t stride = v->stride ;
+
+  const size_t s = MULTIPLICITY * stride ;
+  
+  size_t i ;
+
+  for (i = 0 ; i < (size / 2) ; i++)
+    {
+      size_t j = size - i - 1 ;
+      size_t k;
+
+      for (k = 0; k < MULTIPLICITY; k++)
+        {
+          ATOMIC tmp = data[j*s + k];
+          data[j*s+k] = data[i*s + k];
+          data[i*s+k] = tmp;
+        }
+    }
+  
+  return GSL_SUCCESS;
+}
+