Remove iter_swap specializations.

[ginac.git] / ginac / utils.h

diff --git a/ginac/utils.h b/ginac/utils.h
index 042f14cb93c8185e6f2c4a1ab1989d74b18eae26..692c731453fa371f699767f0fa7f7d972d3889bd 100644 (file)
--- a/ginac/utils.h
+++ b/ginac/utils.h
@@ -108,6 +108,7 @@ inline unsigned golden_ratio_hash(p_int n)
 template <class It>
 int permutation_sign(It first, It last)
 {
+       using std::swap;
        if (first == last)
                return 0;
        --last;
@@ -122,7 +123,7 @@ int permutation_sign(It first, It last)
                bool swapped = false;
                while (i != first) {
                        if (*i < *other) {
-                               std::iter_swap(other, i);
+                               swap(*other, *i);
                                flag = other;
                                swapped = true;
                                sign = -sign;
@@ -143,7 +144,7 @@ int permutation_sign(It first, It last)
                swapped = false;
                while (i != last) {
                        if (*other < *i) {
-                               std::iter_swap(i, other);
+                               swap(*i, *other);
                                flag = other;
                                swapped = true;
                                sign = -sign;