sstream.tcc: Clean up bit ops.

2002-04-09  Benjamin Kosnik  <bkoz@redhat.com>
	    Richard Henderson  <rth@redhat.com>

	* include/bits/sstream.tcc: Clean up bit ops.
	* include/bits/fstream.tcc: Same.

Co-Authored-By: Richard Henderson <rth@redhat.com>

From-SVN: r52070

libstdc++-v3/ChangeLog

+2002-04-09  Benjamin Kosnik  <bkoz@redhat.com>
+	    Richard Henderson  <rth@redhat.com>
+
+	* include/bits/sstream.tcc: Clean up bit ops.
+	* include/bits/fstream.tcc: Same.
+	
 2002-04-09  Jakub Jelinek  <jakub@redhat.com>
 
 	* include/bits/locale_facets.h (__num_base::_S_scale_hex): Remove.

libstdc++-v3/include/bits/fstream.tcc

@@ -560,8 +560,8 @@ namespace std
     seekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __mode)
     {
       pos_type __ret =  pos_type(off_type(-1)); 
-      bool __testin = _M_mode & ios_base::in;
-      bool __testout = _M_mode & ios_base::out;
+      bool __testin = (ios_base::in & _M_mode & __mode) != 0;
+      bool __testout = (ios_base::out & _M_mode & __mode) != 0;
 
       // Should probably do has_facet checks here.
       int __width = use_facet<__codecvt_type>(_M_buf_locale).encoding();
@@ -569,8 +569,7 @@ namespace std
 	__width = 0;
       bool __testfail = __off != 0 && __width <= 0;
       
-      if (this->is_open() && !__testfail 
-	  && __mode & _M_mode && (__testin || __testout))
+      if (this->is_open() && !__testfail && (__testin || __testout)) 
 	{
 	  // Ditch any pback buffers to avoid confusion.
 	  _M_pback_destroy();

libstdc++-v3/include/bits/sstream.tcc

@@ -121,8 +121,8 @@ namespace std
     seekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __mode)
     {
       pos_type __ret =  pos_type(off_type(-1)); 
-      bool __testin = __mode & ios_base::in && _M_mode & ios_base::in;
-      bool __testout = __mode & ios_base::out && _M_mode & ios_base::out;
+      bool __testin = (ios_base::in & _M_mode & __mode) != 0;
+      bool __testout = (ios_base::out & _M_mode & __mode) != 0;
       bool __testboth = __testin && __testout && __way != ios_base::cur;
       __testin &= !(__mode & ios_base::out);
       __testout &= !(__mode & ios_base::in);
@@ -187,8 +187,8 @@ namespace std
 	  off_type __pos = __sp._M_position();
 	  char_type* __beg = NULL;
 	  char_type* __end = NULL;
-	  bool __testin = __mode & ios_base::in && _M_mode & ios_base::in;
-	  bool __testout = __mode & ios_base::out && _M_mode & ios_base::out;
+	  bool __testin = (ios_base::in & _M_mode & __mode) != 0;
+	  bool __testout = (ios_base::out & _M_mode & __mode) != 0;
 	  bool __testboth = __testin && __testout;
 	  __testin &= !(__mode & ios_base::out);
 	  __testout &= !(__mode & ios_base::in);