2006-06-15 Paolo Carlini <pcarlini@suse.de>

	* include/tr1/random.tcc (mersenne_twister<>::operator()()):
	Reload the last position of the _M_x vector too.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@114695 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 4e299c1..0d20d2a 100644 (file)
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,10 @@
 2006-06-15  Paolo Carlini  <pcarlini@suse.de>
 
+       * include/tr1/random.tcc (mersenne_twister<>::operator()()):
+       Reload the last position of the _M_x vector too.
+
+2006-06-15  Paolo Carlini  <pcarlini@suse.de>
+
        * include/tr1/random (class xor_combine): Fix result_type typedef.
        * testsuite/tr1/5_numerical_facilities/random/xor_combine/
        cons/default.cc: New.

diff --git a/libstdc++-v3/include/tr1/random.tcc b/libstdc++-v3/include/tr1/random.tcc
index 57b071a..7fef4cb 100644 (file)
--- a/libstdc++-v3/include/tr1/random.tcc
+++ b/libstdc++-v3/include/tr1/random.tcc
@@ -298,7 +298,7 @@ _GLIBCXX_BEGIN_NAMESPACE(tr1)
          for (int __k = 0; __k < (__n - __m); ++__k)
            {
              _UIntType __y = ((_M_x[__k] & __upper_mask)
-                              |(_M_x[__k + 1] & __lower_mask));
+                              | (_M_x[__k + 1] & __lower_mask));
              _M_x[__k] = (_M_x[__k + __m] ^ (__y >> 1)
                           ^ ((__y & 0x01) ? __a : 0));
            }
@@ -311,6 +311,10 @@ _GLIBCXX_BEGIN_NAMESPACE(tr1)
                           ^ ((__y & 0x01) ? __a : 0));
            }
 
+         _UIntType __y = ((_M_x[__n - 1] & __upper_mask)
+                          | (_M_x[0] & __lower_mask));
+         _M_x[__n - 1] = (_M_x[__m - 1] ^ (__y >> 1)
+                          ^ ((__y & 0x01) ? __a : 0));
          _M_p = 0;
        }