[Python-checkins] python/dist/src/Objects stringobject.c,2.202,2.203

[rhettinger@users.sourceforge.net]

Update of /cvsroot/python/python/dist/src/Objects
In directory sc8-pr-cvs1:/tmp/cvs-serv23816

Modified Files:
	stringobject.c 
Log Message:
GvR's idea to use memset() for the most common special case of repeating
a single character.  Shaves another 10% off the running time by avoiding 
the lg2(N) loops and cache effects for the other cases.    


Index: stringobject.c
===================================================================
RCS file: /cvsroot/python/python/dist/src/Objects/stringobject.c,v
retrieving revision 2.202
retrieving revision 2.203
diff -C2 -d -r2.202 -r2.203
*** stringobject.c	6 Jan 2003 10:33:56 -0000	2.202
--- stringobject.c	6 Jan 2003 22:42:41 -0000	2.203
***************
*** 967,970 ****
--- 967,975 ----
  	op->ob_shash = -1;
  	op->ob_sstate = SSTATE_NOT_INTERNED;
+ 	op->ob_sval[size] = '\0';
+ 	if (a->ob_size == 1 && n > 0) {
+ 		memset(op->ob_sval, a->ob_sval[0] , n);
+ 		return (PyObject *) op;
+ 	}
  	i = 0;
  	if (i < size) {
***************
*** 977,981 ****
  		i += j;
  	}
- 	op->ob_sval[size] = '\0';
  	return (PyObject *) op;
  }
--- 982,985 ----