+++ This bug was initially created as a clone of Bug #976624 +++ Description of problem: Some libm functions implement only rounding to nearest, so to ensure correctness they set and restore the default rounding mode. This is unnecessary in the default case and is hence a performance impediment. Upstream has solved this by calling the set/restore code only when the current rounding mode is not the default. Backport that fix.
glibc-2.16-33.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/glibc-2.16-33.fc18
glibc-2.17-11.fc19 has been submitted as an update for Fedora 19. https://admin.fedoraproject.org/updates/glibc-2.17-11.fc19
Package glibc-2.17-11.fc19: * should fix your issue, * was pushed to the Fedora 19 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing glibc-2.17-11.fc19' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2013-11737/glibc-2.17-11.fc19 then log in and leave karma (feedback).
glibc-2.17-11.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report.
glibc-2.16-33.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.