[Python-checkins] CVS: python/dist/src configure.in,1.134,1.135

[Vladimir Marangozov]

Update of /cvsroot/python/python/dist/src
In directory slayer.i.sourceforge.net:/tmp/cvs-serv12123

Modified Files:
	configure.in 
Log Message:
Checks whether right shift extends the sign bit.

Patch by Thomas Wouters <thomas@xs4all.net> with small changes of mine
(in main(), use return instead of exit).

Closes patch #100832
(but I can't assign it to myself, nor close it -- sorry)


Index: configure.in
===================================================================
RCS file: /cvsroot/python/python/dist/src/configure.in,v
retrieving revision 1.134
retrieving revision 1.135
diff -C2 -r1.134 -r1.135
*** configure.in	2000/07/09 14:39:29	1.134
--- configure.in	2000/07/12 03:02:16	1.135
***************
*** 1137,1140 ****
--- 1137,1153 ----
  AC_C_BIGENDIAN
  
+ # Check whether right shifting a negative integer extends the sign bit
+ # or fills with zeros (like the Cray J90, according to Tim Peters).
+ AC_MSG_CHECKING(whether right shift extends the sign bit)
+ AC_TRY_RUN([
+ int main()
+ {
+ 	return ((-1)>>3 == -1) ? 1 : 0;
+ }
+ ],
+ [AC_DEFINE(SIGNED_RIGHT_SHIFT_ZERO_FILLS)
+  AC_MSG_RESULT(yes)],
+ [AC_MSG_RESULT(no)])
+ 
  # THIS MUST BE LAST, IT CAN BREAK OTHER TESTS!
  # Add sys/socket.h to confdefs.h