[Tcl-bugs] tcl-cvs: "tcl ChangeLog" modified

[miguel s. <ms...@us...>]

Update of /cvsroot/tcl/tcl
In directory sc8-pr-cvs10.sourceforge.net:/tmp/cvs-serv15986

Modified Files:
	ChangeLog 
Log Message:
	* generic/tclExecute.c: changed the check for overflow in sums,
	reducing objsize, number of branches and cache misses (according
	to cachegrind). Non-overflow for s=a+b:
	previous 
	  ((a >= 0 || b >= 0 || s < 0) && (s >= 0 || b < 0 || a < 0))
	now
          (((a^s) >= 0) || ((a^b) < 0))
	This expresses: "a and s have the same sign or else a and b have
	different sign".