From b821f414e480d7f9e097fa453b1c9bfd44d64316 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Tue, 7 Jan 2014 22:00:04 +0000 Subject: Fix ldbl-128ibm coshl spurious overflows (bug 16407). This patch fixes bug 16407, spurious overflows from ldbl-128ibm coshl. The implementation assumed that a high part (reinterpreted as an integer) of the absolute value of the argument of 0x408633ce8fb9f87dLL or more meant overflow, but the actual threshold has high part 0x408633ce8fb9f87eLL (and a negative low part). The patch adjusts the threshold accordingly. sinhl probably has the same issue, but I didn't get that far in adding tests of special cases (such as just below and above overflow) before the freeze and during the freeze is not a suitable time to add them (as they'd require ulps to be regenerated again), so I'm not changing that function for now; when I add more tests of special cases, we'll discover whether sinhl indeed has this problem. Tested powerpc32. * sysdeps/ieee754/ldbl-128ibm/e_coshl.c (__ieee754_coshl): Increase overflow threshold. --- ChangeLog | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'ChangeLog') diff --git a/ChangeLog b/ChangeLog index be41012fd1..ce828b4222 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2014-01-07 Joseph Myers + + [BZ #16407] + * sysdeps/ieee754/ldbl-128ibm/e_coshl.c (__ieee754_coshl): + Increase overflow threshold. + 2014-01-07 Ondřej Bílka [BZ #14286] -- cgit v1.2.3