Discerning x86_64 and i386 packages

[Hearn, Stan J.]

This may be a dumb question, but how do I tell the differences between
these to packages?  One is x86_64 and the other is i386.

[root at xxx sysconfig]# rpm -qi compat-libstdc++-33-3.2.3-61
Name        : compat-libstdc++-33          Relocations: (not
relocatable)
Version     : 3.2.3                             Vendor: Red Hat, Inc.
Release     : 61                            Build Date: Mon 21 Aug 2006
09:39:49 AM EDT
Install Date: Wed 05 Nov 2008 09:09:59 AM EST      Build Host:
hs20-bc1-5.build.redhat.com
Group       : System Environment/Libraries   Source RPM:
compat-gcc-32-3.2.3-61.src.rpm
Size        : 733456                           License: GPL
Signature   : DSA/SHA1, Tue 03 Oct 2006 09:11:53 PM EDT, Key ID
b44269d04f2a6fd2
Packager    : Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla>
URL         : http://gcc.gnu.org
Summary     : Compatibility standard C++ libraries
Description :
The compat-libstdc++ package contains compatibility standard C++ library
from GCC 3.3.4.
Name        : compat-libstdc++-33          Relocations: (not
relocatable)
Version     : 3.2.3                             Vendor: Red Hat, Inc.
Release     : 61                            Build Date: Mon 21 Aug 2006
09:43:13 AM EDT
Install Date: Wed 05 Nov 2008 09:19:06 AM EST      Build Host:
hs20-bc2-2.build.redhat.com
Group       : System Environment/Libraries   Source RPM:
compat-gcc-32-3.2.3-61.src.rpm
Size        : 825400                           License: GPL
Signature   : DSA/SHA1, Thu 18 Jan 2007 10:36:32 AM EST, Key ID
5326810137017186
Packager    : Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla>
URL         : http://gcc.gnu.org
Summary     : Compatibility standard C++ libraries
Description :
The compat-libstdc++ package contains compatibility standard C++ library
from GCC 3.3.4.